WO2018066443A1 - Dirty wastewater purification system - Google Patents
Dirty wastewater purification system Download PDFInfo
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- WO2018066443A1 WO2018066443A1 PCT/JP2017/035111 JP2017035111W WO2018066443A1 WO 2018066443 A1 WO2018066443 A1 WO 2018066443A1 JP 2017035111 W JP2017035111 W JP 2017035111W WO 2018066443 A1 WO2018066443 A1 WO 2018066443A1
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- WIPO (PCT)
- Prior art keywords
- tank
- wastewater
- purification system
- membrane separation
- accelerated oxidation
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- the present invention relates to a wastewater purification system. More specifically, the present invention relates to a self-contained wastewater purification system capable of decomposing organic matter such as stool and having improved resolution with less difficulty.
- organic matter such as feces
- organic matter Decomposing and treating organic matter such as feces (hereinafter simply referred to as “organic matter”) is extremely important. In other words, if the organic matter is left unattended, it becomes an environmentally unsanitary state, and it is necessary to treat it appropriately. Although it can be considered as a method of treating organic matter to drain into sewage, it cannot be drained into sewage in an environment where sewage facilities are not available. For this reason, in such an environment, it is necessary to decompose and process organic matter on the spot. However, in an environment where sewage facilities are not provided, other facilities such as electricity and water are not provided, and the supply of energy and water necessary for processing is often insufficient. For this reason, it is preferable that the disassembling / processing method is as self-contained as possible. For example, Patent Document 1 discloses a technique related to such a self-contained wastewater purification system.
- Patent Document 1 The technique (prior art) disclosed in Patent Document 1 is a technique developed by the present inventor, and is useful in that the system can be made compact and an economical non-water-supplying circulating toilet device can be realized. It is.
- problems still remain in such prior art That is, in the prior art, as shown in FIG. 14, the tanks constituting the system are connected by piping. Since the tanks are relatively distant from each other, the positional relationship between the tanks is distorted due to shaking or vibration during transportation or daily use. For this reason, the piping arranged through the gap is displaced, or a joint between the piping and the tank is cracked, leading to failure. Thus, the prior art has a problem that the entire system is poor in durability and maintainability.
- the present invention aims to develop a self-contained sewage purification system that improves the durability and maintainability and further improves the resolution by evolving the technology of Patent Document 1. .
- the wastewater purification system of the present invention by disposing the tanks close to each other, the displacement between the tanks can be almost eliminated, and the length of the pipe can be shortened as much as possible. .
- the wastewater purification system of the present invention has a structure in which piping displacement and distortion are extremely unlikely to occur.
- the wastewater purification system of the present invention is configured to float the solid matter flowing into and generated in the tank along with the decomposition of the organic matter by oxidation in the accelerated oxidation tank, and return it by the scum pump. This enables floating separation of solid matter.
- the present invention has the following configuration.
- the first configuration of the present invention is: An anaerobic tank that purifies the wastewater supplied from the wastewater source by anaerobic bacteria; An anaerobic tank that purifies the wastewater purified in the anaerobic tank by denitrifying bacteria; An aerobic tank for purifying the wastewater purified in the anaerobic tank with nitrifying bacteria; An accelerated oxidation tank that purifies the wastewater purified by the aerobic tank by oxidative decomposition; With A wastewater purification system in which each of these tanks is arranged close to any other tank or a plurality of tanks, and the water level in each tank is kept the same.
- an intermittently activated submersible pump is installed,
- the submersible pump is connected to one end of a first transfer pipe whose other end is connected to the inlet of the solid-liquid separator,
- the outlet of the solid-liquid separator is connected to one end of a second transfer pipe whose other end is located in the oxygen-free tank,
- a scum pump is suspended in the accelerated oxidation tank,
- the scum pump is connected to one end of a return pipe whose other end is located in the anaerobic tank.
- the oxidative decomposition in the accelerated oxidation tank is performed by combining one or more of hydrogen peroxide supply, high molecular organic acid (high electron density organic acid) supply, and ozone supply. It is performed, It is performed, It is a wastewater purification system as described in the 1st structure.
- the high-molecular organic acid contains at least one or more of fulvic acid and humic acid. Wastewater purification system.
- a fourth configuration of the present invention is the wastewater purification system according to the second or third configuration, wherein the oxidative decomposition in the accelerated oxidation tank is further performed by combining electrolysis.
- a fifth configuration of the present invention is the wastewater purification system according to the fourth configuration, wherein the accelerated oxidation tank includes an electrolysis tank at the center thereof.
- the sixth configuration of the present invention is the first to fifth configurations characterized by further comprising a microbubble generator, wherein the solid matter is floated by generating microbubbles at the bottom of the accelerated oxidation tank. It is a wastewater purification system of description.
- a seventh configuration of the present invention is the wastewater purification system according to the fifth or sixth configuration, wherein the accelerated oxidation tank and the electrolysis tank are formed in a concentric cylindrical shape. .
- the eighth configuration of the present invention is: A first membrane separation tank for purifying the wastewater purified in the accelerated oxidation tank by membrane separation; An ozone contact tank for purifying the wastewater purified in the first membrane separation tank with ozone;
- the wastewater purification system according to any one of the first to seventh aspects, further comprising a biological activated carbon tank that purifies the wastewater purified in the ozone contact tank with biological activated carbon.
- the ninth configuration of the present invention further comprises a second membrane separation tank for purifying the wastewater purified in the biological activated carbon tank by membrane separation, according to the eighth configuration, It is a purification system.
- a biological aeration tank that purifies the wastewater purified in the accelerated oxidation tank by biological treatment, and a wastewater purified in the biological aeration tank is purified by membrane separation.
- the wastewater purification system according to any one of the first to seventh configurations, further comprising an activated carbon tank.
- the eleventh configuration of the present invention includes a treated water tank for storing the wastewater purified in the biological activated carbon tank, and a treated water stored in the treated water tank is transferred, and the treated water is purified by membrane separation.
- the wastewater purification system according to the tenth configuration further comprising a two-membrane separation tank.
- the membrane used in the first membrane separation tank or the second membrane separation tank is an MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration).
- the wastewater purification system according to the ninth or eleventh configuration wherein the system is selected from any one or a plurality of membranes) or RO membranes (reverse osmosis membranes).
- the present invention has made it possible to provide a self-contained sewage drainage purification system that has evolved the technology of Patent Document 1, improved durability and maintainability, and improved resolution.
- 1 is an elevation view showing the overall configuration of the wastewater purification system in Embodiment 1 of the present invention.
- the top view which shows the whole structure of the wastewater purification system in Embodiment 1 of this invention.
- stimulation oxidation tank which comprises the waste water purification system in Embodiment 1 of this invention ((a) is an elevation view, (b) is a top view) Elevated view showing an accelerated oxidation circulation device (microbubble generator) constituting the wastewater purification system according to Embodiment 1 of the present invention.
- the conceptual diagram which shows the other structure and flow of the wastewater purification system in Embodiment 1 of this invention The conceptual diagram which shows the structure and flow of the wastewater purification system in Embodiment 2 of this invention.
- Elevation figure which shows the whole structure of the wastewater purification system in Embodiment 2 of this invention The top view which shows the whole structure of the waste water purification system in Embodiment 2 of this invention
- the figure which shows the accelerated oxidation tank which comprises the waste water purification system in Embodiment 2 of this invention ((a) is an elevation view, (b) is a top view)
- the elevational view ((a) is a mixed injection type of ozone gas and hydrogen peroxide solution, and (b) is ozone) showing the accelerated oxidation circulation device (microbubble generator) constituting the wastewater purification system in Embodiment 2 of the present invention.
- the wastewater purification system of the present invention is characterized in that the tanks that perform purification treatment and the like are arranged close to each other to shorten the length of the piping as much as possible, and the accelerated oxidation tank is provided to further improve the resolution.
- the waste water purification system of this invention becomes a structure which is hard to produce the shift
- “closely arranged” means that the tanks are in contact with each other, or that the positional deviation between the tanks during movement or daily use is close enough not to cause failure. Defined.
- the accelerated oxidation tank decomposes organic substances by oxidation, floats the solids that flow into and out of the tank, and returns them to the anaerobic tank by a scum pump. Is possible.
- the wastewater purification system of the present invention includes an anaerobic tank, an oxygen-free tank, an aerobic tank, and an accelerated oxidation tank as essential components. These essential components play a major role in the wastewater purification system in the wastewater decomposition process and the removal of solids from the system.
- other components can be provided. Examples of such optional components include a first membrane separation tank, an ozone contact tank, a biological activated carbon tank, and a second membrane separation tank, which are arranged after the accelerated oxidation tank.
- Each tank which is an essential and optional component in the present invention, is arranged close to one or more other tanks.
- each tank is directly connected to the top or bottom of the tank, or a transfer pipe or a return pipe is disposed as appropriate, so that treated water can be moved between the tanks.
- the water level in each tank is kept the same. According to these configurations, it is possible to move the treated water according to gravity, and it is possible to function as a self-contained wastewater purification system with the minimum energy for movement. It is done.
- “the water level is kept the same” only needs to be the same to the extent that gravity can cause movement of the treated water, and in this sense, it is not necessarily required to be exactly the same. Absent.
- the contaminated water purification system of the present invention can be used for various purposes. That is, as exemplified in FIG. 6 and the like, it can be used for various applications related to the decomposition of organic matter such as manure treatment in a barn or a simple toilet, manure in a simple house, and domestic wastewater treatment.
- the anaerobic tank functions to purify the wastewater supplied from the wastewater source with anaerobic bacteria.
- the anaerobic tank is connected to a solid-liquid separator, and supplies raw water or treated water to the anaerobic tank so as to assist the removal of solid matter from the system.
- the anaerobic tank is not particularly limited as long as it fulfills these functions, and various configurations can be adopted.
- the anaerobic tank typically has a cylindrical shape and is provided with an anaerobic bacterium inside.
- the anaerobic tank includes a submerged pump and a transfer pipe connected to the submerged pump. What is necessary is just to set it as the structure connected with the separator.
- the anoxic tank functions to purify the nitrogen components in the wastewater supplied from the anaerobic tank by denitrifying bacteria.
- the anaerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- the anoxic tank typically has a cylindrical shape and may be configured to have denitrifying bacteria inside.
- the aerobic tank functions to purify organic matter from the wastewater supplied from the anoxic tank by aerobic bacteria.
- the aerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- aerobic bacteria for example, Bacillus subtilis, polyphosphate accumulating bacteria (PAO), nitrifying bacteria described later, and the like can be used.
- the aerobic tank typically has a cylindrical shape as shown in FIGS. 2 and 3 and may be configured to have aerobic bacteria inside.
- the accelerated oxidation tank performs the function of purifying the wastewater supplied from the aerobic tank by oxidative decomposition and the function of returning the solid matter flowing into and generated by the scum pump to the anaerobic tank.
- the accelerated oxidation tank is not particularly limited as long as it fulfills such a function, and various types of structures can be adopted.
- OH Radical as “hydroxyl radical”
- the oxidative decomposition in the accelerated oxidation tank is not particularly limited as long as oxidative decomposition is possible, and various methods can be adopted.
- supply of ozone (O 3 ), supply of hydrogen peroxide (H 2 O 2 ), supply of high molecular organic acid (high electron density organic acid), UV irradiation, ultrasonic equipment, etc. Can be used alone or in combination. Thereby, the effect that accelerated oxidation can be performed effectively is acquired.
- the polymer organic acid is not particularly limited as long as it is an organic acid having a high electron density that adjusts the pH in the tank and generates radicals by reaction with ozone. Can be used.
- a high molecular organic acid fulvic acid (humic acid) and humic acid (humic acid) can be typically used, and it is preferable that at least one or more of these are included.
- the high-molecular organic acid generates radicals such as hydroxyl radicals through an electron transfer reaction with ozone, and can promote the oxidation reaction in the accelerated oxidation tank.
- the oxidative decomposition in the accelerated oxidation tank is preferably performed by further combining electrolysis. According to such a preferable configuration, an effect that the oxidative decomposition in the accelerated oxidation tank can be performed more efficiently is obtained.
- the accelerated oxidation tank is preferably provided with an electrolysis tank for electrolysis at the center thereof. According to such a preferable configuration, it is possible to separate the function of decomposition by accelerated oxidation at the center and the function of floating separation at the outside, so that the oxidative decomposition of solid wastewater and the removal of solid matter can be performed efficiently. The effect of being able to be obtained.
- microbubble generator and generate microbubbles at the bottom of the accelerated oxidation tank.
- the microbubble generator is not particularly limited as long as microbubbles can be generated at the bottom of the accelerated oxidation tank, and those having various performances can be adopted and installed at various positions. be able to.
- the microbubble generator can be installed at the top of the accelerated oxidation tank as shown in FIGS.
- the accelerated oxidation tank and the electrolysis tank are preferably formed in a concentric cylindrical shape. According to such a preferable configuration, it is possible to make the water flow to the upper part due to the microbubbles generated at the bottom of the accelerated oxidation tank reach the upper part with less resistance, so that the floating separation of solids can be promoted. The effect that it can be obtained.
- the first membrane separation tank functions to purify the wastewater supplied from the accelerated oxidation tank by membrane separation.
- the first membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- the first membrane separation tank has properties as a so-called coarse separation as compared with the second membrane separation tank described later.
- An MF membrane microfiltration membrane
- UF membrane ultrafiltration membrane
- NF membrane nanofiltration membrane
- RO membrane reverse osmosis membrane
- a UF membrane may be used in the first membrane separation tank.
- the ozone contact tank functions to purify the wastewater supplied from the first membrane separation tank with ozone.
- the ozone contact tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- the biological activated carbon tank functions to purify the wastewater supplied from the ozone contact tank with biological activated carbon.
- the biological activated carbon tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- the second membrane separation tank functions to purify the wastewater supplied from the biological activated carbon tank by membrane separation.
- the second membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
- the second membrane separation tank functions as an outlet for finally discharging the treated water to the outside of the system, and the membrane to be used can be appropriately selected according to the use application of the discharged treated water.
- Embodiment 1 [Embodiment 1]
- the configuration of the wastewater purification system according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5.
- FIG. 1 is a conceptual diagram showing the configuration and flow of a wastewater purification system according to Embodiment 1 of the present invention
- FIG. 2 is an elevation view showing the overall configuration of the wastewater purification system
- FIG. 4 is a plan view showing the overall configuration
- FIG. 4 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view
- (b) is a plan view)
- FIG. 5 is the wastewater purification system. It is an elevational view showing an accelerated oxidation circulator (microbubble generator) to be configured.
- the wastewater purification system 1 of the present embodiment is arranged in order from the upstream side (sewage generation source side), and wastewater (raw water) supplied from the wastewater generation source. Purification process in the raw water collection tank 2 (not shown in FIGS.
- the raw water collecting tank 2, the anaerobic tank 3, the anoxic tank 4, the aerobic tank 5, and the accelerated oxidation tank 6 are each composed of a cylindrical tank, and these are placed vertically.
- the first membrane separation tank 7, the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11 are each composed of a rectangular tube tank, and these are also placed vertically.
- PVC polyvinyl chloride
- Each of these tanks is arranged close to any other or a plurality of tanks.
- the anaerobic tank 3 and the anaerobic tank 4, and the anoxic tank 4 and the aerobic tank 5 are directly connected to each other through the communication holes 12 and 13 at the bottom.
- the membrane separation tank 10 and the treated water storage tank 11 are communicated with each other via communication pipes 14, 15, 16 and the like at the upper part.
- the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, so that the water level in each tank is kept the same.
- a sewage pump (not shown) is automatically activated, and the sewage drainage in the raw water catchment tank 2 is activated.
- the wastewater pumped up in the anaerobic tank 3 is passed through the communication holes 12 and 13 and the communication pipes 14 and 15 in the order of the anaerobic tank 4, the aerobic tank 5, the accelerated oxidation tank 6, and the first membrane separation tank 7. Moving.
- the wastewater purification system can be made compact.
- the waste water in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by a self-priming pump 18. And the wastewater pumped up by the ozone contact tank 8 moves in order of the biological activated carbon tank 9, the 2nd membrane separation tank 10, and the treated water storage tank 11 via the communicating pipe 16 grade
- the waste water in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11. Even if there is no separate installation, there will be no problem with the flow of wastewater. As a result, the wastewater purification system can be made compact.
- the case where the wastewater in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited.
- a communication hole (not shown) for moving the waste water after the first membrane separation treatment to the ozone contact tank 8 according to gravity may be provided at the bottom.
- the raw water collecting tank 2 has a screen function for removing contaminated solids from the wastewater (raw water) supplied from the wastewater generation source. Then, the wastewater after the removal of contaminated solids is purified by receiving anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria, etc. in anaerobic tank 3, anoxic tank 4 and aerobic tank 5. Is done.
- Anaerobic bacteria are introduced into the anaerobic tank 3. Then, the wastewater pumped up from the raw water collecting tank 2 to the anaerobic tank 3 is subjected to purification treatment in the anaerobic tank 3 by receiving anaerobic decomposition (reduction reaction) by anaerobic bacteria. Moreover, in the anaerobic tank 3, the submersible pump 19 started intermittently is installed. The submersible pump 19 is connected to one end of a first transfer pipe 21 whose other end is connected to an inlet of a solid-liquid separator (decanter) 20. One end of the second transfer pipe 22 whose end is located in the anoxic tank 4 is connected.
- a first transfer pipe 21 whose other end is connected to an inlet of a solid-liquid separator (decanter) 20.
- One end of the second transfer pipe 22 whose end is located in the anoxic tank 4 is connected.
- reference numeral 23 denotes an agitation pump for agitating the inside of the anaerobic tank 3 in order to promote the anaerobic decomposition treatment of organic substances by the anaerobic bacteria in the anaerobic tank 3 and the phosphorus treatment by the PAO bacteria returned from the aerobic tank Is shown.
- the wastewater discharged in the anaerobic tank 3 is moved to the anaerobic tank 4 through the solid-liquid separator 20 and the communication hole 12.
- a self-priming pump 24 is installed in the upper part of the anaerobic tank 4.
- the other end of the first return pipe 25 is connected to the inlet of the self-priming pump 24 and the other end is located in the aerobic tank 5 at the rear stage.
- reference numeral 27 indicates a stirring pump that stirs the inside of the anoxic tank 4 in order to promote the nitrogen removing process in the anoxic tank 4.
- the dirty wastewater purified in the anaerobic tank 4 is moved to the aerobic tank 5 through the communication hole 13.
- the aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria.
- the wastewater purified in the anaerobic tank 4 is aerated in the aerobic tank 5 and oxidative decomposition of organic substances is performed by aerobic bacteria introduced and cultured in the aerobic tank 5, and ammonia is converted into ammonia.
- Nitrification and nitric acid are performed by oxidizing bacteria and nitrite oxidizing bacteria.
- a self-priming pump 28 is installed above the oxygen-free tank 4.
- the aerobic tank 5 includes an upstream aerobic tank 5a and a downstream aerobic tank 5b.
- the anaerobic tank 4 and the upstream aerobic tank 5a are directly connected to each other through the communication hole 13 at the bottom.
- the other end of the first return pipe 25 is located in the upstream aerobic tank 5a.
- the other end of the third return pipe 29 is located in the downstream aerobic tank 5b.
- the anoxic tank 4, and the aerobic tank 5 it is devised so that the activation of microorganisms and the heat insulation and heat insulation effect can be enhanced through far-infrared rays.
- the wastewater that has been purified in the aerobic tank 5 is moved to the accelerated oxidation tank 6 through the communication pipe 14.
- the sewage wastewater purified in the aerobic tank 5 is purified in the accelerated oxidation tank 6 by oxidative decomposition.
- a scum pump 31 is suspended in the accelerated oxidation tank 6, and the other end of the scum pump 31 has a fifth return pipe 32 positioned immediately above the water surface of the anaerobic tank 3. One end is connected.
- the fine solids flowing into and generated in the accelerated oxidation tank 6 are returned to the anaerobic tank 3 and can be discharged and removed from the discharge port of the solid-liquid separator 20.
- the wastewater purification system 1 of the present embodiment includes an accelerated oxidation circulation device (microbubble generator) 34 and generates microbubbles at the bottom of the accelerated oxidation tank 6.
- an accelerated oxidation circulation device microbubble generator
- the fine solids flowing into and generated in the accelerated oxidation tank 6 are floated and can be easily returned to the anaerobic tank 3 by the scum pump 31, so that the removal of the fine solids from the system can be promoted. .
- the accelerated oxidation circulation device (microbubble generator) 34 is installed in the accelerated oxidation circulation device main body 35 and the accelerated oxidation tank 6, and is connected to one end of the accelerated oxidation circulation device main body 35 via the pumping pipe 36. And a discharge pipe 38 connected to the other end of the promoted oxidation circulator main body 35 and having a microbubble discharge part 38a at the tip disposed at the bottom of the promoted oxidation tank 6. .
- the accelerated oxidation circulation device main body 35 includes a fine bubble generating nozzle 39 connected to the pumping pipe 36, and a UV lamp 40 and a TiO 2 ball 41 arranged in this order between the fine bubble generating nozzle 39 and the discharge pipe 38.
- a sealed quartz tube 42 and a gas-liquid mixing tube 43 are provided. Hydrogen peroxide (H 2 O 2 ), a polymer organic acid (fulvic acid, humic acid, etc.), ozone, etc. are formed in the fine bubble generating nozzle 39. (O 3 ) can be sent alone or in combination.
- an electrolysis tank 33 made of a PVC (polyvinyl chloride) cylindrical tank is concentrically arranged.
- a TiO2 anode plate 46a, 46b is arranged.
- the accelerated oxidation tank 6 and the electrolysis tank 33 are directly connected via a communication hole 47 at the bottom.
- the electrolysis tank 33 and the accelerated oxidation tank 6 are communicated with each other via a communication pipe 48 at the upper part.
- the communication pipe 48 is provided at a position substantially the same height as the above-described communication pipes 14, 15, 16 and the like.
- the accelerated oxidation tank 6 having the above configuration can intentionally generate OH radicals and improve / promote the oxidizing power.
- ozone, hydrogen peroxide, and even ultraviolet rays (UV) it is possible to generate hydroxyl radicals, which are powerful oxidants, and to decompose and remove persistent degradable pollutants in water.
- UV ultraviolet rays
- the combination of ozone, hydrogen peroxide, and high-molecular organic acid produces the effect that almost no secondary waste is generated because the main products after decomposition are oxygen and water.
- the oxidative decomposition in the accelerated oxidation tank 6 can be performed more efficiently.
- the wastewater purified in the accelerated oxidation tank 6 is moved to the first membrane separation tank 7 through the communication pipe 15. Then, the wastewater purified in the accelerated oxidation tank 6 is purified in the first membrane separation tank 7 by membrane separation.
- the first membrane separation tank 7 has a property of so-called rough separation as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane. It has been.
- reference numeral 50 indicates an air diffuser.
- the air diffuser 50 functions to supply oxygen to the activated sludge and to clean the membrane surface by the upward flow of bubbles.
- the solid substance trapped in the first membrane separation tank 7 and the peeled biofilm are transferred to the anaerobic tank 3 as backwash water.
- the wastewater purified in the first membrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified in the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
- reference numeral 51 indicates a submerged pump-type nano-micro bubble injection, and nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the first membrane separation tank 7.
- the sewage wastewater that has been subjected to purification treatment can be further purified.
- the waste water purified in the biological activated carbon tank 9 is moved to the second membrane separation tank 10. Then, the wastewater purified in the biological activated carbon tank 9 is purified in the second membrane separation tank 10 by membrane separation.
- the membrane in the second membrane separation tank 10 an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane), an RO membrane (reverse osmosis membrane) or the like is used according to the intended use of the treated water obtained.
- the treated water obtained by purification in the second membrane separation tank 10 is stored in a treated water storage tank 11.
- the treated water stored in the treated water storage tank 11 may be discharged into a river or the like as long as the water quality conforms to the technical standards specified by a Cabinet Order. Moreover, you may make it process within a site, without discharging to a river etc. (reuse).
- the sewage purification system 1 can be applied to, for example, purification treatment of sewage supplied from a sewage tank (sewage generation source) in a toilet room. Moreover, as shown in FIG. 6, it can also be applied to the purification treatment of the wastewater supplied from the barn. In this case, the solid solids removed in the raw water collecting tank 2 and the fine solids removed in the anaerobic tank 3 are used. Things can be composted.
- FIG. 7 is a conceptual diagram showing the configuration and flow of the wastewater purification system according to Embodiment 2 of the present invention
- FIG. 8 is an elevation view showing the overall configuration of the wastewater purification system
- FIG. FIG. 10 is a plan view showing the overall configuration
- FIG. 10 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view
- (b) is a plan view)
- FIG. 11 is the wastewater purification system.
- FIG. 12 is an elevation view of the accelerating oxidizer (microbubble generator) that is configured ((a) is a mixed injection type of ozone gas and hydrogen peroxide solution, (b) is a separate injection type of ozone water and hydrogen peroxide solution),
- FIG. 13 is a diagram for explaining the effects resulting from the structure of the accelerated oxidation tank constituting the wastewater purification system.
- the wastewater purification system 53 of the present embodiment is disposed in order from the upstream side (the wastewater generation source side), and the wastewater (raw water) supplied from the wastewater generation source.
- the raw water collecting tank 2 (not shown in FIG. 8) for purifying the wastewater
- the anaerobic tank 3 for purifying the wastewater purified in the raw water collecting tank 2 by anaerobic bacteria, and the soil purified in the anaerobic tank 3
- An anaerobic tank 4 for purifying wastewater by denitrifying bacteria
- an aerobic tank 5 for purifying wastewater purified by the anaerobic tank 4 by an aerobic bacteria
- wastewater purified by the aerobic tank 5 The oxidation oxidation tank 6 for purification treatment by oxidative decomposition, the biological aeration tank 54 for purification treatment of the wastewater purified by the promotion oxidation tank 6 by biological treatment, and the wastewater wastewater purified by the biological aeration tank 54 as a membrane Purified in the first membrane separation tank 7 to be purified by separation and the first membrane
- the wastewater purified in the biological activated carbon tank 9 is stored in a treated water tank 55 (not shown in FIG. 8).
- the treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 (not shown in FIG. 8) and is subjected to membrane separation using an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane) or the like. It is purified and returned to the treated water tank 55.
- the water quality conforms to the technical standards stipulated by the Cabinet Order, it will be discharged into rivers. On the other hand, if the water quality does not meet the technical standards stipulated by the Cabinet Order, it is used as industrial water without being discharged into rivers.
- the treated water obtained by purifying by membrane separation using RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and used as purified water (drinking water). .
- Raw water collection tank 2, anaerobic tank 3, anoxic tank 4, aerobic tank 5, biological aeration tank 54, first membrane separation tank 7, ozone contact tank 8, biological activated carbon tank 9, treated water tank 55, second membrane separation tank 10 and the purified water tank 56 are each composed of a rectangular tank, and these are placed vertically.
- the accelerated oxidation tank 6 is composed of a cylindrical tank, and this cylindrical tank is also placed vertically.
- PVC polyvinyl chloride
- Each of these tanks is arranged close to any other or a plurality of tanks.
- the anaerobic tank 3, the oxygen-free tank 4, the oxygen-free tank 4, the aerobic tank 5, and the accelerated oxidation tank 6 and the biological aeration tank 54 are directly connected to each other through the communication holes 12, 13, 57 at the bottom. ing.
- the separation tank 10 and the purified water tank 56 are communicated with each other via communication pipes 14, 15, 16 and the like at the upper part.
- the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, so that the water level in each tank is kept the same.
- a sewage pump (not shown) is automatically activated and the sewage drainage in the raw water catchment tank 2 is activated.
- the wastewater pumped up in the anaerobic tank 3 is passed through the communication holes 12 and 13, the communication pipe 14, the communication hole 57 and the communication pipe 15, and the anaerobic tank 4, the aerobic tank 5, the accelerated oxidation tank 6, and the biological aeration. It moves in order of the tank 54 and the first membrane separation tank 7.
- the wastewater purification system can be made compact.
- the waste water in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by a self-priming pump 18.
- the wastewater pumped up in the ozone contact tank 8 moves in order of the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56 through the communication pipe 16 and the like.
- the wastewater in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56.
- the wastewater purification system can be made compact.
- the case where the wastewater in the first membrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited.
- a communication hole (not shown) for moving the waste water after the first membrane separation treatment to the ozone contact tank 8 according to gravity may be provided at the bottom.
- the raw water collecting tank 2 is provided with a drum screen (not shown) and functions to remove contaminated solids from the wastewater (raw water) supplied from the wastewater generation source. Then, the wastewater after the removal of contaminated solids is purified by receiving anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria, etc. in anaerobic tank 3, anoxic tank 4 and aerobic tank 5. Is done.
- Anaerobic bacteria are introduced into the anaerobic tank 3.
- reference numeral 58 indicates a microorganism carrier on which anaerobic bacteria are fixed. Then, the wastewater pumped up from the raw water collecting tank 2 to the anaerobic tank 3 is subjected to purification treatment in the anaerobic tank 3 by receiving anaerobic decomposition (reduction reaction) by anaerobic bacteria.
- the submersible pump 19 started intermittently is installed in the anaerobic tank 3.
- the submersible pump 19 is connected to one end of a first transfer pipe 21 having the other end connected to the inlet of the solid-liquid separator 20, and the outlet of the solid-liquid separator 20 has no other end.
- One end of the second transfer pipe 22 located in the oxygen tank 4 is connected. Thereby, the fine solid contained in the waste water pumped up in the anaerobic tank 3 can be discharged and removed from the discharge port of the solid-liquid separator 20.
- the wastewater discharged in the anaerobic tank 3 is moved to the anaerobic tank 4 through the solid-liquid separator 20 and the communication hole 12.
- a self-priming pump 24 is installed in the upper part of the anaerobic tank 4.
- the other end of the first return pipe 25 is connected to the inlet of the self-priming pump 24 and the other end is located in the aerobic tank 5 at the rear stage.
- the nitrifying bacteria grown in the aerobic tank 5 are also returned to the anaerobic tank 4, and the wastewater purified in the anaerobic tank 3 and the denitrifying bacteria come into contact with each other in an oxygen-free state.
- the wastewater purified in the anaerobic tank 3 is denitrified by the denitrifying bacteria grown in the anaerobic tank using the organic component in the wastewater as a hydrogen donor, so that nitrate nitrogen in the wastewater is removed. It is changed to nitrogen gas and removed.
- reference numeral 59 indicates a microorganism carrier to which nitrifying bacteria are fixed.
- Reference numeral 60 denotes a downward stirring pump that stirs the oxygen-free tank 4 in order to make the activated sludge concentration in the oxygen-free tank 4 uniform.
- the dirty wastewater purified in the anaerobic tank 4 is moved to the aerobic tank 5 through the communication hole 13.
- the aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria.
- the wastewater purified in the anaerobic tank 4 is aerated in the aerobic tank 5 and oxidative decomposition of organic substances is performed by aerobic bacteria introduced and cultured in the aerobic tank 5, and ammonia is converted into ammonia.
- Nitrification and nitric acid are performed by oxidizing bacteria and nitrite oxidizing bacteria.
- reference numeral 61 indicates a microorganism carrier to which nitrifying bacteria are fixed.
- a self-priming pump 28 is installed above the oxygen-free tank 4.
- the aerobic tank 5 includes an upstream aerobic tank 5a and a downstream aerobic tank 5b.
- the anaerobic tank 4 and the upstream aerobic tank 5a are directly connected to each other through the communication hole 13 at the bottom.
- the other end of the first return pipe 25 is located in the upstream aerobic tank 5a.
- the other end of the third return pipe 29 is located in the downstream aerobic tank 5b. Further, in the anaerobic tank 4 and the aerobic tank 5, the far-infrared lamp is devised so that the activation of microorganisms and the heat insulation and heat insulation effect can be enhanced.
- the wastewater that has been purified in the aerobic tank 5 is moved to the accelerated oxidation tank 6 through the communication pipe 14.
- the sewage wastewater purified in the aerobic tank 5 is purified in the accelerated oxidation tank 6 by oxidative decomposition.
- a scum pump 31 is suspended in the accelerated oxidation tank 6, and the other end of the scum pump 31 has a fifth return pipe 32 positioned directly above the water surface of the anaerobic tank 3. One end is connected.
- the fine solids flowing into and generated in the accelerated oxidation tank 6 are returned to the anaerobic tank 3 and can be discharged and removed from the discharge port of the solid-liquid separator 20.
- the wastewater purification system 53 of this embodiment includes an in-line accelerated oxidation device (microbubble generator) 62, and microbubbles are generated in the accelerated oxidation tank 6. It can be generated. And according to this structure, since the fine solid substance which flowed in and generate
- the in-line promoted oxidizer (microbubble generator) 62 is installed in the promoted oxidizer main body 63 and the promoted oxidizer tank 6 and connected to one end of the promoted oxidizer main body 63 via the pumping pipe 64.
- the promoted oxidizer main body 63 includes an injected nano-micro bubble generating nozzle 67 connected to the pumping pipe 64, and a gas-liquid mixing tube 68 disposed in this order between the nano-micro bubble generating nozzle 67 and the discharge pipe 66.
- a cylindrical ultrasonic jet vibrator 69, and ozone (O 3 ) gas and hydrogen peroxide water (H 2 O 2 ) can be sent alone or in combination to the nano-microbubble generating nozzle 67 portion.
- O 3 ozone
- H 2 O 2 hydrogen peroxide water
- the submersible pump 65 of the in-line accelerated oxidation apparatus (microbubble generator) 62 is installed at the bottom of the electrolysis tank 33, and the discharge pipe 66 is arranged outside the electrolysis tank 33.
- reference numeral 70 indicates humus soil that elutes humic acid, which is an organic acid, in the tank.
- the material of the cylindrical tank in the accelerated oxidation tank 6 is not particularly limited, but typically, a material made of PVC (polyvinyl chloride) may be used.
- the accelerated oxidation tank 6 having the above-described configuration, it is possible to intentionally generate hydroxyl radicals and improve / promote the oxidizing power.
- ozone, hydrogen peroxide, and even ultraviolet rays (UV) it is possible to generate OH radicals, which are powerful oxidants, and to decompose and remove persistent degradable pollutants in water.
- OH radicals which are powerful oxidants
- ozone, hydrogen peroxide, ultraviolet (UV), ultrasonic waves, nano-micro bubbles, etc. are used, the main products after decomposition are oxygen and water, so that secondary waste is hardly generated.
- the electrolysis tank 33 and the inline accelerated oxidation apparatus 62 according to the combination of the concentric cylindrical accelerated oxidation tank 6, the electrolysis tank 33 and the inline accelerated oxidation apparatus 62, the nano-microbubble generating nozzle 67 and the gas-liquid are combined.
- the spiral flow generated by the mixing tube 68 and the cylindrical ultrasonic jet vibrator 69 becomes a swirl flow and promotes the reaction. That is, according to the configuration of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of this embodiment provided with the cylindrical electrolysis tank 33 and the in-line accelerated oxidation apparatus 62, the conventional accelerated oxidation tank is used.
- the nano-micro bubbles become bubbles having a diameter of 10 to 50 ⁇ m due to the swirling flow, and the dissolution rate is higher than that of the milli-bubbles of about 1 to 10 mm. That is, according to the structure of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of this embodiment provided with the cylindrical electrolysis tank 33 and the in-line accelerated oxidation apparatus 62, the ozone gas is dissolved. The dissolution rate can be increased without using a pressurized dissolution tank.
- the wastewater purified in the accelerated oxidation tank 6 is moved to the biological aeration tank 54 through the communication hole 57. Then, the wastewater purified in the accelerated oxidation tank 6 is purified in the biological aeration tank 54 by biological treatment.
- reference numeral 71 indicates a microorganism carrier to which microorganisms used for biological treatment are fixed.
- the wastewater purified in the biological aeration tank 54 is moved to the first membrane separation tank 7 through the communication pipe 15. Then, the wastewater purified in the biological aeration tank 54 is purified in the first membrane separation tank 7 by membrane separation.
- the first membrane separation tank 7 has a property of so-called rough separation as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane. It has been.
- reference numeral 50 indicates an air diffuser, and the air diffuser 50 performs the function of supplying the oxygen to the activated sludge and cleaning the membrane surface by the upward flow of bubbles.
- the wastewater purified in the first membrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified in the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
- reference numeral 51 indicates a submersible pump nano-bubble injection. Nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the first membrane separation tank 7.
- Reference numeral 72 indicates a TiO 2 ball as a photocatalyst, and sterilization can be performed only by irradiating the TiO 2 ball with ultraviolet rays.
- the wastewater purified in the ozone contact tank 8 is moved to the biological activated carbon tank 9 through the communication pipe 16. Then, the wastewater purified by the ozone contact tank 8 is purified by the biological activated carbon 52 in the biological activated carbon tank 9.
- the wastewater purified by the biological activated carbon tank 9 is stored in the treated water tank 55.
- the treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 and purified by membrane separation using an MF membrane (microfiltration membrane), NF membrane (nanofiltration membrane), etc. Will be returned.
- MF membrane microfiltration membrane
- NF membrane nanofiltration membrane
- the treated water obtained by purifying by membrane separation using RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and used as purified water (drinking water). .
- the wastewater purification system 53 of the present embodiment can also be applied to the purification treatment of wastewater supplied from a wastewater tank (sewage generation source) in a toilet room, for example.
- the present invention is not necessarily limited to such an accelerated oxidizer.
- an in-line accelerated oxidizer 73 of the ozone water and hydrogen peroxide solution separation / injection type as shown in FIG. 11B may be used.
- the in-line promoted oxidizer 73 includes a promoted oxidizer main body 74, a submersible pump 65 installed in the promoted oxidizer tank 6 and connected to one end of the promoted oxidizer main body 74 via a pumping pipe 64. , And a release pipe 66 connected to the other end of the promoted oxidizer main body 74.
- the promoted oxidizer main body 74 is composed of a nano-micro bubble generating nozzle 67 connected to the pumping pipe 64, an injector 75, a cylindrical type, which are arranged in order between the nano-micro bubble generating nozzle 67 and the discharge pipe 66. And an ultrasonic jet vibrator 69 so that ozone water can be fed into the nano-micro bubble generating nozzle 67 and hydrogen peroxide can be fed into the injector 75, respectively.
- a microorganism treatment method For the treatment of contaminated water, a microorganism treatment method has been conventionally employed. That is, the microbial treatment method is useful in that the wastewater treatment cost is relatively low.
- the microbial treatment method tends to have an enormous amount of equipment, and there is a problem that it is not a thorough treatment method because it cannot decompose difficult-to-decompose substances. Therefore, the development of new treatment methods that can be combined with biological treatment methods is necessary in order to decompose difficult-to-decompose substances that cannot be treated by microbial treatment alone into easily degradable materials that are easy to biodegrade. is necessary.
- the ozone treatment method is one of the methods that can be used in combination with biological treatment because the object to be treated is oxidatively decomposed by the strong oxidizing power of ozone.
- the ozone treatment method is a very useful treatment technique for microbial treatment methods that require dissolved oxygen because secondary waste such as sludge does not occur during the treatment and ozone becomes harmless oxygen after the reaction. is there.
- reducing substances such as nitrite nitrogen and organic substances in the treated water react with ozone and disappear, while there are substances that are less reactive with ozone and decompose.
- the present invention overcomes the technical problems in the organic matter treatment described above, and develops and puts to practical use the equipment necessary for the stable generation and utilization of hydroxyl radicals.
- Embodiment 2 of the present invention can provide an A2O2 type decomposition method.
- the A2O2 method is described below.
- the A2O2 method is a treatment method in which a biological aeration tank is newly provided after accelerated oxidation treatment from the biological treatment method of the A2O method. By placing an anaerobic tank in front of the solid-liquid separator, the PAO bacteria that have excessive intake of floating slats and phosphorus are returned to the raw water anaerobic tank.
- an oxygen-free tank is provided in the previous stage of the accelerated oxidation tank, biological nitrogen and phosphorus are removed, and organic matter is used as a carbon source necessary for nitrogen removal, so that the injection of methanol can be omitted.
- Conventional biological treatments such as the activated sludge method require post-aeration precipitation and dehydration, but the slats are floated by nano-microbubbles in the accelerated oxidation tank, so that precipitation and dehydration are no longer necessary.
- the present invention makes it possible to make the system compact and improve the purification capability, and has the following advantages and technical features.
- Compaction such as aeration tank capacity, aeration time, and piping omitted.
- No secondary waste such as purification by-products and precipitates.
- Ideal for industrial water because it eliminates chemical components such as polymer flocculants (for eliminating bulking and antifoaming agents) and leaves no chemical components in the final treated water.
- the solid matter after solid-liquid separation of livestock manure improves the quality of organic fertilizer.
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Abstract
[Problem] To provide a self-contained dirty wastewater purification system with improved durability and maintainability and improved degradation ability. [Solution] A dirty wastewater purification system 1 is provided with an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, and an accelerated oxidation tank 6. Each tank is disposed in proximity to any or a plurality of the other tanks and the water level in the tanks is kept the same. An immersible pump 19 that starts intermittently is provided in the anaerobic tank 3. One end of a transfer pipe 21, the other end of which is connected to an inflow opening of a solid-liquid separator 20, is connected to the immersible pump 19, and one end of a transfer pipe 22, the other end of which is positioned within the anoxic tank 4, is connected to the outflow opening of the solid-liquid separator 20. A scum pump 31 is disposed so as to float in the accelerated oxidation tank 6, and one end of a return pipe 32, the other end of which is positioned in the anaerobic tank 3, is connected to the scum pump 31.
Description
本発明は,汚排水浄化システムに関する。さらに詳しくいうと本発明は,糞便等の有機物の分解等が可能であって,故障しにくく分解能を向上させた,自己完結式の汚排水浄化システムに関する。
The present invention relates to a wastewater purification system. More specifically, the present invention relates to a self-contained wastewater purification system capable of decomposing organic matter such as stool and having improved resolution with less difficulty.
糞便などの有機物(以下,単に「有機物」という)を分解・処理することは,極めて重要である。
すなわち,有機物を放置すると環境的に不衛生な状態となるため,これを適切に処理する必要がある。有機物の処理として,下水に流すことが方法として考えられるが,下水設備が整っていない環境においては,下水に流すことはできない。このことから,そのような環境においては,有機物を,その場において,分解・処理する必要が生じる。
しかるに,下水設備が整っていない環境では,電気や水道などの他の設備も整っておらず,処理に必要なエネルギーや水の供給が十分でないことも多い。このことから,分解・処理を行う方法としては,できる限り自己完結的な方法であることが好ましい。例えば,特許文献1に,このような自己完結式の汚排水浄化システムに関する技術が開示されている。 Decomposing and treating organic matter such as feces (hereinafter simply referred to as “organic matter”) is extremely important.
In other words, if the organic matter is left unattended, it becomes an environmentally unsanitary state, and it is necessary to treat it appropriately. Although it can be considered as a method of treating organic matter to drain into sewage, it cannot be drained into sewage in an environment where sewage facilities are not available. For this reason, in such an environment, it is necessary to decompose and process organic matter on the spot.
However, in an environment where sewage facilities are not provided, other facilities such as electricity and water are not provided, and the supply of energy and water necessary for processing is often insufficient. For this reason, it is preferable that the disassembling / processing method is as self-contained as possible. For example,Patent Document 1 discloses a technique related to such a self-contained wastewater purification system.
すなわち,有機物を放置すると環境的に不衛生な状態となるため,これを適切に処理する必要がある。有機物の処理として,下水に流すことが方法として考えられるが,下水設備が整っていない環境においては,下水に流すことはできない。このことから,そのような環境においては,有機物を,その場において,分解・処理する必要が生じる。
しかるに,下水設備が整っていない環境では,電気や水道などの他の設備も整っておらず,処理に必要なエネルギーや水の供給が十分でないことも多い。このことから,分解・処理を行う方法としては,できる限り自己完結的な方法であることが好ましい。例えば,特許文献1に,このような自己完結式の汚排水浄化システムに関する技術が開示されている。 Decomposing and treating organic matter such as feces (hereinafter simply referred to as “organic matter”) is extremely important.
In other words, if the organic matter is left unattended, it becomes an environmentally unsanitary state, and it is necessary to treat it appropriately. Although it can be considered as a method of treating organic matter to drain into sewage, it cannot be drained into sewage in an environment where sewage facilities are not available. For this reason, in such an environment, it is necessary to decompose and process organic matter on the spot.
However, in an environment where sewage facilities are not provided, other facilities such as electricity and water are not provided, and the supply of energy and water necessary for processing is often insufficient. For this reason, it is preferable that the disassembling / processing method is as self-contained as possible. For example,
特許文献1に開示の技術(先行技術)は,本願発明者により開発された技術であり,システムのコンパクト化を図り,経済的な無給水の循環式トイレ装置を実現しうる点において有用な技術である。
しかるに,かかる先行技術にも課題が残されていた。すなわち,先行技術においては,図14に示すように,システムを構成する各槽が配管で繋がれている。そして,各槽間は比較的距離が空いていることから,輸送時や日常使用時における揺れや振動などにより,各槽間の位置関係にゆがみが生じることとなる。そのため,隙間を通して配置される配管にズレが生じ,あるいは,配管と槽との結合部分にヒビが生じることとなり,故障などにつながってしまう。このように,先行技術は,システム全体が,耐久性やメンテナンス性に乏しいという課題を有していた。 The technique (prior art) disclosed inPatent Document 1 is a technique developed by the present inventor, and is useful in that the system can be made compact and an economical non-water-supplying circulating toilet device can be realized. It is.
However, problems still remain in such prior art. That is, in the prior art, as shown in FIG. 14, the tanks constituting the system are connected by piping. Since the tanks are relatively distant from each other, the positional relationship between the tanks is distorted due to shaking or vibration during transportation or daily use. For this reason, the piping arranged through the gap is displaced, or a joint between the piping and the tank is cracked, leading to failure. Thus, the prior art has a problem that the entire system is poor in durability and maintainability.
しかるに,かかる先行技術にも課題が残されていた。すなわち,先行技術においては,図14に示すように,システムを構成する各槽が配管で繋がれている。そして,各槽間は比較的距離が空いていることから,輸送時や日常使用時における揺れや振動などにより,各槽間の位置関係にゆがみが生じることとなる。そのため,隙間を通して配置される配管にズレが生じ,あるいは,配管と槽との結合部分にヒビが生じることとなり,故障などにつながってしまう。このように,先行技術は,システム全体が,耐久性やメンテナンス性に乏しいという課題を有していた。 The technique (prior art) disclosed in
However, problems still remain in such prior art. That is, in the prior art, as shown in FIG. 14, the tanks constituting the system are connected by piping. Since the tanks are relatively distant from each other, the positional relationship between the tanks is distorted due to shaking or vibration during transportation or daily use. For this reason, the piping arranged through the gap is displaced, or a joint between the piping and the tank is cracked, leading to failure. Thus, the prior art has a problem that the entire system is poor in durability and maintainability.
上記事情を背景として,本発明では,特許文献1の技術を進化させ,耐久性やメンテナンス性をより向上させるとともに,分解能を更に向上させた自己完結式の汚排水浄化システムの開発を課題とする。
Against the background of the above circumstances, the present invention aims to develop a self-contained sewage purification system that improves the durability and maintainability and further improves the resolution by evolving the technology of Patent Document 1. .
発明者は,鋭意研究の結果,浄化処理などを行う各槽を近接配置して,配管の長さをできるだけ短縮するとともに,促進酸化槽を設けて分解能を更に向上させた汚排水浄化システムに想到し,発明を完成させたものである。
As a result of diligent research, the inventor has conceived a wastewater purification system in which the tanks for purification treatment are arranged close to each other to shorten the length of the piping as much as possible and the resolution is further improved by providing an accelerated oxidation tank. The invention was completed.
すなわち,本発明の汚排水浄化システムは,各槽を近接して配置することにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。結果として,本発明の汚排水浄化システムは,配管のズレや歪みが極めて生じにくい構造となっているものである。
加えて,本発明の汚排水浄化システムは,促進酸化槽において酸化による有機物の分解とともに,槽内に流入・発生した固形物を浮遊させ,スカムポンプによって返送する構成となっており,酸化による分解と固形物の浮遊分離を可能とするものである。 That is, in the wastewater purification system of the present invention, by disposing the tanks close to each other, the displacement between the tanks can be almost eliminated, and the length of the pipe can be shortened as much as possible. . As a result, the wastewater purification system of the present invention has a structure in which piping displacement and distortion are extremely unlikely to occur.
In addition, the wastewater purification system of the present invention is configured to float the solid matter flowing into and generated in the tank along with the decomposition of the organic matter by oxidation in the accelerated oxidation tank, and return it by the scum pump. This enables floating separation of solid matter.
加えて,本発明の汚排水浄化システムは,促進酸化槽において酸化による有機物の分解とともに,槽内に流入・発生した固形物を浮遊させ,スカムポンプによって返送する構成となっており,酸化による分解と固形物の浮遊分離を可能とするものである。 That is, in the wastewater purification system of the present invention, by disposing the tanks close to each other, the displacement between the tanks can be almost eliminated, and the length of the pipe can be shortened as much as possible. . As a result, the wastewater purification system of the present invention has a structure in which piping displacement and distortion are extremely unlikely to occur.
In addition, the wastewater purification system of the present invention is configured to float the solid matter flowing into and generated in the tank along with the decomposition of the organic matter by oxidation in the accelerated oxidation tank, and return it by the scum pump. This enables floating separation of solid matter.
本発明は,以下の構成からなる。
本発明の第一の構成は,
汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する嫌気槽と,
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を硝化菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,
前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されていることを特徴とする汚排水浄化システムである。 The present invention has the following configuration.
The first configuration of the present invention is:
An anaerobic tank that purifies the wastewater supplied from the wastewater source by anaerobic bacteria;
An anaerobic tank that purifies the wastewater purified in the anaerobic tank by denitrifying bacteria;
An aerobic tank for purifying the wastewater purified in the anaerobic tank with nitrifying bacteria;
An accelerated oxidation tank that purifies the wastewater purified by the aerobic tank by oxidative decomposition;
With
A wastewater purification system in which each of these tanks is arranged close to any other tank or a plurality of tanks, and the water level in each tank is kept the same.
In the anaerobic tank, an intermittently activated submersible pump is installed,
The submersible pump is connected to one end of a first transfer pipe whose other end is connected to the inlet of the solid-liquid separator,
The outlet of the solid-liquid separator is connected to one end of a second transfer pipe whose other end is located in the oxygen-free tank,
A scum pump is suspended in the accelerated oxidation tank,
The scum pump is connected to one end of a return pipe whose other end is located in the anaerobic tank.
本発明の第一の構成は,
汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する嫌気槽と,
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を硝化菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,
前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されていることを特徴とする汚排水浄化システムである。 The present invention has the following configuration.
The first configuration of the present invention is:
An anaerobic tank that purifies the wastewater supplied from the wastewater source by anaerobic bacteria;
An anaerobic tank that purifies the wastewater purified in the anaerobic tank by denitrifying bacteria;
An aerobic tank for purifying the wastewater purified in the anaerobic tank with nitrifying bacteria;
An accelerated oxidation tank that purifies the wastewater purified by the aerobic tank by oxidative decomposition;
With
A wastewater purification system in which each of these tanks is arranged close to any other tank or a plurality of tanks, and the water level in each tank is kept the same.
In the anaerobic tank, an intermittently activated submersible pump is installed,
The submersible pump is connected to one end of a first transfer pipe whose other end is connected to the inlet of the solid-liquid separator,
The outlet of the solid-liquid separator is connected to one end of a second transfer pipe whose other end is located in the oxygen-free tank,
A scum pump is suspended in the accelerated oxidation tank,
The scum pump is connected to one end of a return pipe whose other end is located in the anaerobic tank.
本発明の第二の構成は,前記促進酸化槽における酸化分解が,過酸化水素の供給,高分子有機酸(高電子密度有機酸)の供給,オゾンの供給のいずれか又は複数を組み合わせることによって行われることを特徴とする第一の構成に記載の汚排水浄化システムである。
本発明の第三の構成は,前記高分子有機酸が,フルボ酸(fulvic acid),フミン酸(humic acid)のいずれか又は複数を少なくとも含むことを特徴とする第二の構成に記載の汚排水浄化システムである。
本発明の第四の構成は,前記促進酸化槽における酸化分解が,さらに電気分解を組み合わせることによって行われることを特徴とする第二又は第三の構成に記載の汚排水浄化システムである。
本発明の第五の構成は,前記促進酸化槽が,その中心部に電気分解槽を備えることを特徴とする第四の構成に記載の汚排水浄化システムである。
本発明の第六の構成は,マイクロバブル発生器をさらに備え,前記促進酸化槽の底部においてマイクロバブルを発生させることにより,固形物を浮遊させることを特徴とする第一から第五の構成に記載の汚排水浄化システムである。
本発明の第七の構成は,前記促進酸化槽と前記電気分解槽が,同心の円筒状に形成されていることを特徴とする第五又は第六の構成に記載の汚排水浄化システムである。 According to a second configuration of the present invention, the oxidative decomposition in the accelerated oxidation tank is performed by combining one or more of hydrogen peroxide supply, high molecular organic acid (high electron density organic acid) supply, and ozone supply. It is performed, It is performed, It is a wastewater purification system as described in the 1st structure.
According to a third configuration of the present invention, the high-molecular organic acid contains at least one or more of fulvic acid and humic acid. Wastewater purification system.
A fourth configuration of the present invention is the wastewater purification system according to the second or third configuration, wherein the oxidative decomposition in the accelerated oxidation tank is further performed by combining electrolysis.
A fifth configuration of the present invention is the wastewater purification system according to the fourth configuration, wherein the accelerated oxidation tank includes an electrolysis tank at the center thereof.
The sixth configuration of the present invention is the first to fifth configurations characterized by further comprising a microbubble generator, wherein the solid matter is floated by generating microbubbles at the bottom of the accelerated oxidation tank. It is a wastewater purification system of description.
A seventh configuration of the present invention is the wastewater purification system according to the fifth or sixth configuration, wherein the accelerated oxidation tank and the electrolysis tank are formed in a concentric cylindrical shape. .
本発明の第三の構成は,前記高分子有機酸が,フルボ酸(fulvic acid),フミン酸(humic acid)のいずれか又は複数を少なくとも含むことを特徴とする第二の構成に記載の汚排水浄化システムである。
本発明の第四の構成は,前記促進酸化槽における酸化分解が,さらに電気分解を組み合わせることによって行われることを特徴とする第二又は第三の構成に記載の汚排水浄化システムである。
本発明の第五の構成は,前記促進酸化槽が,その中心部に電気分解槽を備えることを特徴とする第四の構成に記載の汚排水浄化システムである。
本発明の第六の構成は,マイクロバブル発生器をさらに備え,前記促進酸化槽の底部においてマイクロバブルを発生させることにより,固形物を浮遊させることを特徴とする第一から第五の構成に記載の汚排水浄化システムである。
本発明の第七の構成は,前記促進酸化槽と前記電気分解槽が,同心の円筒状に形成されていることを特徴とする第五又は第六の構成に記載の汚排水浄化システムである。 According to a second configuration of the present invention, the oxidative decomposition in the accelerated oxidation tank is performed by combining one or more of hydrogen peroxide supply, high molecular organic acid (high electron density organic acid) supply, and ozone supply. It is performed, It is performed, It is a wastewater purification system as described in the 1st structure.
According to a third configuration of the present invention, the high-molecular organic acid contains at least one or more of fulvic acid and humic acid. Wastewater purification system.
A fourth configuration of the present invention is the wastewater purification system according to the second or third configuration, wherein the oxidative decomposition in the accelerated oxidation tank is further performed by combining electrolysis.
A fifth configuration of the present invention is the wastewater purification system according to the fourth configuration, wherein the accelerated oxidation tank includes an electrolysis tank at the center thereof.
The sixth configuration of the present invention is the first to fifth configurations characterized by further comprising a microbubble generator, wherein the solid matter is floated by generating microbubbles at the bottom of the accelerated oxidation tank. It is a wastewater purification system of description.
A seventh configuration of the present invention is the wastewater purification system according to the fifth or sixth configuration, wherein the accelerated oxidation tank and the electrolysis tank are formed in a concentric cylindrical shape. .
本発明の第八の構成は,
前記促進酸化槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第九の構成は,前記生物活性炭槽で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第八の構成に記載の汚排水浄化システムである。
本発明の第十の構成は,前記促進酸化槽で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽と,前記生物曝気槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第十一の構成は,生物活性炭槽で浄化処理された汚排水を貯める処理水槽と,前記処理水槽に貯められた処理水が移送され,当該処理水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第十の構成に記載の汚排水浄化システムである。
本発明の第十二の構成は,前記第一膜分離槽ないし第二膜分離槽において用いられる膜が,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)のいずれか又は複数から選択されることを特徴とする第九又は第十一の構成に記載の汚排水浄化システムである。 The eighth configuration of the present invention is:
A first membrane separation tank for purifying the wastewater purified in the accelerated oxidation tank by membrane separation;
An ozone contact tank for purifying the wastewater purified in the first membrane separation tank with ozone;
The wastewater purification system according to any one of the first to seventh aspects, further comprising a biological activated carbon tank that purifies the wastewater purified in the ozone contact tank with biological activated carbon.
The ninth configuration of the present invention further comprises a second membrane separation tank for purifying the wastewater purified in the biological activated carbon tank by membrane separation, according to the eighth configuration, It is a purification system.
According to a tenth configuration of the present invention, a biological aeration tank that purifies the wastewater purified in the accelerated oxidation tank by biological treatment, and a wastewater purified in the biological aeration tank is purified by membrane separation. A first membrane separation tank, an ozone contact tank that purifies the wastewater purified in the first membrane separation tank with ozone, and a living organism that purifies the wastewater purified in the ozone contact tank with biological activated carbon. The wastewater purification system according to any one of the first to seventh configurations, further comprising an activated carbon tank.
The eleventh configuration of the present invention includes a treated water tank for storing the wastewater purified in the biological activated carbon tank, and a treated water stored in the treated water tank is transferred, and the treated water is purified by membrane separation. The wastewater purification system according to the tenth configuration, further comprising a two-membrane separation tank.
According to a twelfth configuration of the present invention, the membrane used in the first membrane separation tank or the second membrane separation tank is an MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration). The wastewater purification system according to the ninth or eleventh configuration, wherein the system is selected from any one or a plurality of membranes) or RO membranes (reverse osmosis membranes).
前記促進酸化槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第九の構成は,前記生物活性炭槽で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第八の構成に記載の汚排水浄化システムである。
本発明の第十の構成は,前記促進酸化槽で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽と,前記生物曝気槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする第一から第七の構成に記載の汚排水浄化システムである。
本発明の第十一の構成は,生物活性炭槽で浄化処理された汚排水を貯める処理水槽と,前記処理水槽に貯められた処理水が移送され,当該処理水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする第十の構成に記載の汚排水浄化システムである。
本発明の第十二の構成は,前記第一膜分離槽ないし第二膜分離槽において用いられる膜が,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)のいずれか又は複数から選択されることを特徴とする第九又は第十一の構成に記載の汚排水浄化システムである。 The eighth configuration of the present invention is:
A first membrane separation tank for purifying the wastewater purified in the accelerated oxidation tank by membrane separation;
An ozone contact tank for purifying the wastewater purified in the first membrane separation tank with ozone;
The wastewater purification system according to any one of the first to seventh aspects, further comprising a biological activated carbon tank that purifies the wastewater purified in the ozone contact tank with biological activated carbon.
The ninth configuration of the present invention further comprises a second membrane separation tank for purifying the wastewater purified in the biological activated carbon tank by membrane separation, according to the eighth configuration, It is a purification system.
According to a tenth configuration of the present invention, a biological aeration tank that purifies the wastewater purified in the accelerated oxidation tank by biological treatment, and a wastewater purified in the biological aeration tank is purified by membrane separation. A first membrane separation tank, an ozone contact tank that purifies the wastewater purified in the first membrane separation tank with ozone, and a living organism that purifies the wastewater purified in the ozone contact tank with biological activated carbon. The wastewater purification system according to any one of the first to seventh configurations, further comprising an activated carbon tank.
The eleventh configuration of the present invention includes a treated water tank for storing the wastewater purified in the biological activated carbon tank, and a treated water stored in the treated water tank is transferred, and the treated water is purified by membrane separation. The wastewater purification system according to the tenth configuration, further comprising a two-membrane separation tank.
According to a twelfth configuration of the present invention, the membrane used in the first membrane separation tank or the second membrane separation tank is an MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration). The wastewater purification system according to the ninth or eleventh configuration, wherein the system is selected from any one or a plurality of membranes) or RO membranes (reverse osmosis membranes).
本発明により,特許文献1の技術を進化させ,耐久性やメンテナンス性をより向上させるとともに,分解能をより向上させた自己完結式の汚排水浄化システムの提供が可能となった。
The present invention has made it possible to provide a self-contained sewage drainage purification system that has evolved the technology of Patent Document 1, improved durability and maintainability, and improved resolution.
以下,好適な実施の形態を用いて本発明をさらに具体的に説明する。但し,下記の実施の形態は本発明を具現化した例に過ぎず,本発明はこれに限定されるものではない。
Hereinafter, the present invention will be described more specifically with reference to preferred embodiments. However, the following embodiment is merely an example embodying the present invention, and the present invention is not limited to this.
<<I.汚排水浄化システムの概要>>
本発明の汚排水浄化システムは,浄化処理などを行う各槽を近接配置して,配管の長さをできるだけ短縮するとともに,促進酸化槽を設けて分解能を更に向上させたことを特徴とする。 << I. Overview of wastewater purification system >>
The wastewater purification system of the present invention is characterized in that the tanks that perform purification treatment and the like are arranged close to each other to shorten the length of the piping as much as possible, and the accelerated oxidation tank is provided to further improve the resolution.
本発明の汚排水浄化システムは,浄化処理などを行う各槽を近接配置して,配管の長さをできるだけ短縮するとともに,促進酸化槽を設けて分解能を更に向上させたことを特徴とする。 << I. Overview of wastewater purification system >>
The wastewater purification system of the present invention is characterized in that the tanks that perform purification treatment and the like are arranged close to each other to shorten the length of the piping as much as possible, and the accelerated oxidation tank is provided to further improve the resolution.
すなわち,本発明の汚排水浄化システムは,各槽を近接して配置することにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となるものである。
そして,これらの構成により,本発明の汚排水浄化システムは,配管のズレや歪みが極めて生じにくい構造となっているものである。
なお,本発明において,「近接して配置」とは,各槽間が接している,もしくは,移動や日常使用時における各槽間の位置のズレが故障に繋がらないほど近接していることとして定義される。 That is, in the wastewater purification system of the present invention, by disposing the tanks close to each other, the displacement between the tanks can be almost eliminated, and the length of the pipe can be shortened as much as possible. Is.
And by these structures, the waste water purification system of this invention becomes a structure which is hard to produce the shift | offset | difference and distortion of piping.
In the present invention, “closely arranged” means that the tanks are in contact with each other, or that the positional deviation between the tanks during movement or daily use is close enough not to cause failure. Defined.
そして,これらの構成により,本発明の汚排水浄化システムは,配管のズレや歪みが極めて生じにくい構造となっているものである。
なお,本発明において,「近接して配置」とは,各槽間が接している,もしくは,移動や日常使用時における各槽間の位置のズレが故障に繋がらないほど近接していることとして定義される。 That is, in the wastewater purification system of the present invention, by disposing the tanks close to each other, the displacement between the tanks can be almost eliminated, and the length of the pipe can be shortened as much as possible. Is.
And by these structures, the waste water purification system of this invention becomes a structure which is hard to produce the shift | offset | difference and distortion of piping.
In the present invention, “closely arranged” means that the tanks are in contact with each other, or that the positional deviation between the tanks during movement or daily use is close enough not to cause failure. Defined.
また,促進酸化槽は,酸化によって有機物を分解するとともに,槽内に流入・発生した固形物を浮遊させ,スカムポンプによって嫌気槽に返送する構成となっており,酸化による分解と固形物の浮遊分離を可能とするものである。
The accelerated oxidation tank decomposes organic substances by oxidation, floats the solids that flow into and out of the tank, and returns them to the anaerobic tank by a scum pump. Is possible.
本発明の汚排水浄化システムは,必須の構成要素として,嫌気槽,無酸素槽,好気槽,促進酸化槽を備える。これらの必須の構成要素は,汚排水浄化システムにおいて,汚排水の分解処理とシステムからの固形物の除去を主として担う役割を果たすものである。
本発明の汚排水浄化システムにおいては,他の構成要素を備えることもできる。このような任意の構成要素としては,促進酸化槽に続いて配置される,第一膜分離槽,オゾン接触槽,生物活性炭槽,第二膜分離槽を挙げることができる。これらの構成要素を備えることにより,促進酸化槽までで浄化処理された汚排水についてさらに浄化処理を行い,法的規制をクリアできる程度,もしくは,飲料水や洗浄水として利用できる程度にまで浄化処理することが可能となるので,本発明の汚排水浄化システムの有用性を向上させることができるという効果が得られる。 The wastewater purification system of the present invention includes an anaerobic tank, an oxygen-free tank, an aerobic tank, and an accelerated oxidation tank as essential components. These essential components play a major role in the wastewater purification system in the wastewater decomposition process and the removal of solids from the system.
In the wastewater purification system of the present invention, other components can be provided. Examples of such optional components include a first membrane separation tank, an ozone contact tank, a biological activated carbon tank, and a second membrane separation tank, which are arranged after the accelerated oxidation tank. By providing these components, the wastewater that has been purified up to the accelerated oxidation tank can be further purified to a level where legal regulations can be cleared or used as drinking water or washing water. Therefore, the usefulness of the wastewater purification system of the present invention can be improved.
本発明の汚排水浄化システムにおいては,他の構成要素を備えることもできる。このような任意の構成要素としては,促進酸化槽に続いて配置される,第一膜分離槽,オゾン接触槽,生物活性炭槽,第二膜分離槽を挙げることができる。これらの構成要素を備えることにより,促進酸化槽までで浄化処理された汚排水についてさらに浄化処理を行い,法的規制をクリアできる程度,もしくは,飲料水や洗浄水として利用できる程度にまで浄化処理することが可能となるので,本発明の汚排水浄化システムの有用性を向上させることができるという効果が得られる。 The wastewater purification system of the present invention includes an anaerobic tank, an oxygen-free tank, an aerobic tank, and an accelerated oxidation tank as essential components. These essential components play a major role in the wastewater purification system in the wastewater decomposition process and the removal of solids from the system.
In the wastewater purification system of the present invention, other components can be provided. Examples of such optional components include a first membrane separation tank, an ozone contact tank, a biological activated carbon tank, and a second membrane separation tank, which are arranged after the accelerated oxidation tank. By providing these components, the wastewater that has been purified up to the accelerated oxidation tank can be further purified to a level where legal regulations can be cleared or used as drinking water or washing water. Therefore, the usefulness of the wastewater purification system of the present invention can be improved.
本発明において必須および任意の構成要素とされる各槽は,一つもしくは複数の他の槽と近接して配置される。また,各槽は,その上部もしくは底部で直接繋がっているか,もしくは,適宜,移送管ないし返送管が配置され,これにより,各槽間における処理水の移動が可能となっている。さらには,各槽における水位が同一に保持される構成となっている。そして,これらの構成によれば,重力に従った処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になるという効果が得られる。
なお,本発明において,「水位が同一に保持」とは,重力によって処理水の移動が生じうる程度の同一であればよく,この意味において,厳密に同一であることを必ずしも必要とするものではない。 Each tank, which is an essential and optional component in the present invention, is arranged close to one or more other tanks. In addition, each tank is directly connected to the top or bottom of the tank, or a transfer pipe or a return pipe is disposed as appropriate, so that treated water can be moved between the tanks. Furthermore, the water level in each tank is kept the same. According to these configurations, it is possible to move the treated water according to gravity, and it is possible to function as a self-contained wastewater purification system with the minimum energy for movement. It is done.
In the present invention, “the water level is kept the same” only needs to be the same to the extent that gravity can cause movement of the treated water, and in this sense, it is not necessarily required to be exactly the same. Absent.
なお,本発明において,「水位が同一に保持」とは,重力によって処理水の移動が生じうる程度の同一であればよく,この意味において,厳密に同一であることを必ずしも必要とするものではない。 Each tank, which is an essential and optional component in the present invention, is arranged close to one or more other tanks. In addition, each tank is directly connected to the top or bottom of the tank, or a transfer pipe or a return pipe is disposed as appropriate, so that treated water can be moved between the tanks. Furthermore, the water level in each tank is kept the same. According to these configurations, it is possible to move the treated water according to gravity, and it is possible to function as a self-contained wastewater purification system with the minimum energy for movement. It is done.
In the present invention, “the water level is kept the same” only needs to be the same to the extent that gravity can cause movement of the treated water, and in this sense, it is not necessarily required to be exactly the same. Absent.
本発明の汚染水浄化システムにおいては,これを種々の用途で使用することが可能である。
すなわち,図6などに例示されるように畜舎や簡易トイレなどにおける糞尿処理,簡易ハウスにおける糞尿ならびに生活排水処理など,有機物の分解に関わる種々の用途として用いることができる。 In the contaminated water purification system of the present invention, it can be used for various purposes.
That is, as exemplified in FIG. 6 and the like, it can be used for various applications related to the decomposition of organic matter such as manure treatment in a barn or a simple toilet, manure in a simple house, and domestic wastewater treatment.
すなわち,図6などに例示されるように畜舎や簡易トイレなどにおける糞尿処理,簡易ハウスにおける糞尿ならびに生活排水処理など,有機物の分解に関わる種々の用途として用いることができる。 In the contaminated water purification system of the present invention, it can be used for various purposes.
That is, as exemplified in FIG. 6 and the like, it can be used for various applications related to the decomposition of organic matter such as manure treatment in a barn or a simple toilet, manure in a simple house, and domestic wastewater treatment.
以下,本発明の汚排水浄化システムにおける各槽の構成等について説明する。
[嫌気槽]
嫌気槽は,汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する機能を果たす。また,嫌気槽は,固液分離機に連結されており,これに原水あるいは処理水を供給することにより,システムからの固形物の除去を補助する機能を果たす。嫌気槽は,これらの機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
嫌気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に嫌気性菌を備えるとともに,水中ポンプとこれに接続された移送管により,固液分離機に連結された構成とすればよい。 Hereinafter, the configuration of each tank in the wastewater purification system of the present invention will be described.
[Anaerobic tank]
The anaerobic tank functions to purify the wastewater supplied from the wastewater source with anaerobic bacteria. In addition, the anaerobic tank is connected to a solid-liquid separator, and supplies raw water or treated water to the anaerobic tank so as to assist the removal of solid matter from the system. The anaerobic tank is not particularly limited as long as it fulfills these functions, and various configurations can be adopted.
As shown in FIGS. 2 and 3, the anaerobic tank typically has a cylindrical shape and is provided with an anaerobic bacterium inside. The anaerobic tank includes a submerged pump and a transfer pipe connected to the submerged pump. What is necessary is just to set it as the structure connected with the separator.
[嫌気槽]
嫌気槽は,汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する機能を果たす。また,嫌気槽は,固液分離機に連結されており,これに原水あるいは処理水を供給することにより,システムからの固形物の除去を補助する機能を果たす。嫌気槽は,これらの機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
嫌気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に嫌気性菌を備えるとともに,水中ポンプとこれに接続された移送管により,固液分離機に連結された構成とすればよい。 Hereinafter, the configuration of each tank in the wastewater purification system of the present invention will be described.
[Anaerobic tank]
The anaerobic tank functions to purify the wastewater supplied from the wastewater source with anaerobic bacteria. In addition, the anaerobic tank is connected to a solid-liquid separator, and supplies raw water or treated water to the anaerobic tank so as to assist the removal of solid matter from the system. The anaerobic tank is not particularly limited as long as it fulfills these functions, and various configurations can be adopted.
As shown in FIGS. 2 and 3, the anaerobic tank typically has a cylindrical shape and is provided with an anaerobic bacterium inside. The anaerobic tank includes a submerged pump and a transfer pipe connected to the submerged pump. What is necessary is just to set it as the structure connected with the separator.
[無酸素槽]
無酸素槽は,嫌気槽から供給される汚排水中の窒素成分を脱窒菌により浄化処理する機能を果たす。無酸素槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
無酸素槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に脱窒菌を備えた構成とすればよい。 [Anoxic tank]
The anoxic tank functions to purify the nitrogen components in the wastewater supplied from the anaerobic tank by denitrifying bacteria. The anaerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
As shown in FIGS. 2 and 3, the anoxic tank typically has a cylindrical shape and may be configured to have denitrifying bacteria inside.
無酸素槽は,嫌気槽から供給される汚排水中の窒素成分を脱窒菌により浄化処理する機能を果たす。無酸素槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
無酸素槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に脱窒菌を備えた構成とすればよい。 [Anoxic tank]
The anoxic tank functions to purify the nitrogen components in the wastewater supplied from the anaerobic tank by denitrifying bacteria. The anaerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
As shown in FIGS. 2 and 3, the anoxic tank typically has a cylindrical shape and may be configured to have denitrifying bacteria inside.
[好気槽]
好気槽は,無酸素槽から供給される汚排水を好気性菌により有機物の浄化処理する機能を果たす。好気槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。このような好気性菌として,例えば,枯草菌,ポリリン酸蓄積細菌(PAO)や後述する硝化菌などを用いることができる。
好気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に好気性菌を備えた構成とすればよい。 [Aerobic tank]
The aerobic tank functions to purify organic matter from the wastewater supplied from the anoxic tank by aerobic bacteria. The aerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted. As such aerobic bacteria, for example, Bacillus subtilis, polyphosphate accumulating bacteria (PAO), nitrifying bacteria described later, and the like can be used.
The aerobic tank typically has a cylindrical shape as shown in FIGS. 2 and 3 and may be configured to have aerobic bacteria inside.
好気槽は,無酸素槽から供給される汚排水を好気性菌により有機物の浄化処理する機能を果たす。好気槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。このような好気性菌として,例えば,枯草菌,ポリリン酸蓄積細菌(PAO)や後述する硝化菌などを用いることができる。
好気槽は,典型的には,図2,図3に示すように,円筒状の形状であって,内部に好気性菌を備えた構成とすればよい。 [Aerobic tank]
The aerobic tank functions to purify organic matter from the wastewater supplied from the anoxic tank by aerobic bacteria. The aerobic tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted. As such aerobic bacteria, for example, Bacillus subtilis, polyphosphate accumulating bacteria (PAO), nitrifying bacteria described later, and the like can be used.
The aerobic tank typically has a cylindrical shape as shown in FIGS. 2 and 3 and may be configured to have aerobic bacteria inside.
[促進酸化槽]
促進酸化槽は,好気槽から供給される汚排水を酸化分解により浄化処理する機能と,槽内に流入・発生した固形物をスカムポンプによって嫌気槽に返送する機能と,を果たす。促進酸化槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,促進酸化槽においては,・OH Radical(単に「ヒドロキシルラジカル」と略する)をはじめとする種々の反応がなされることから,ラジカル反応に対して耐性の高い素材を用いることが好ましく,例えば,ステンレス素材のものなどを用いることが好ましい。 [Accelerated oxidation tank]
The accelerated oxidation tank performs the function of purifying the wastewater supplied from the aerobic tank by oxidative decomposition and the function of returning the solid matter flowing into and generated by the scum pump to the anaerobic tank. The accelerated oxidation tank is not particularly limited as long as it fulfills such a function, and various types of structures can be adopted.
In the accelerated oxidation tank, since various reactions such as OH Radical (simply abbreviated as “hydroxyl radical”) are made, it is preferable to use a material that is highly resistant to radical reaction. It is preferable to use a stainless steel material.
促進酸化槽は,好気槽から供給される汚排水を酸化分解により浄化処理する機能と,槽内に流入・発生した固形物をスカムポンプによって嫌気槽に返送する機能と,を果たす。促進酸化槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,促進酸化槽においては,・OH Radical(単に「ヒドロキシルラジカル」と略する)をはじめとする種々の反応がなされることから,ラジカル反応に対して耐性の高い素材を用いることが好ましく,例えば,ステンレス素材のものなどを用いることが好ましい。 [Accelerated oxidation tank]
The accelerated oxidation tank performs the function of purifying the wastewater supplied from the aerobic tank by oxidative decomposition and the function of returning the solid matter flowing into and generated by the scum pump to the anaerobic tank. The accelerated oxidation tank is not particularly limited as long as it fulfills such a function, and various types of structures can be adopted.
In the accelerated oxidation tank, since various reactions such as OH Radical (simply abbreviated as “hydroxyl radical”) are made, it is preferable to use a material that is highly resistant to radical reaction. It is preferable to use a stainless steel material.
促進酸化槽における酸化分解については,酸化分解が可能な限り,特に限定されるものではなく,種々の手法を採用することができる。
促進酸化の手法については,オゾン(O3)の供給,過酸化水素(H2O2)の供給,高分子有機酸(高電子密度有機酸)の供給,UVの照射,超音波装置,これらを単独もしくは複数組み合わせて用いることができる。これにより,促進酸化を効果的に行うことができるという効果が得られる。
高分子有機酸については,槽内におけるPHを調整するとともに,オゾンとの反応によってラジカルを発生させる高電子密度を持つ有機酸である限り,特に限定されるものではなく,種々の高分子有機酸を用いることができる。このような高分子有機酸としては,典型的には,フルボ酸(fulvic acid),フミン酸(humic acid)を用いることができ,これらのいずれか又は複数を少なくとも含んでいることが好ましい。
高分子有機酸は,下記式に例示されるように,オゾンとの電子移動反応を通じて,ヒドロキシルラジカルなどのラジカル体を発生し,促進酸化槽における酸化反応を促すことが可能となる。
(式1)O3+高電子密度有機酸 → O3・有機酸(オゾン付加体有機酸)
(式2)O3・有機酸(オゾン付加体有機酸) → O3 -+有機酸+
(式3)O3 -+H+ →HO3 →OH+O2 The oxidative decomposition in the accelerated oxidation tank is not particularly limited as long as oxidative decomposition is possible, and various methods can be adopted.
For the method of accelerated oxidation, supply of ozone (O 3 ), supply of hydrogen peroxide (H 2 O 2 ), supply of high molecular organic acid (high electron density organic acid), UV irradiation, ultrasonic equipment, etc. Can be used alone or in combination. Thereby, the effect that accelerated oxidation can be performed effectively is acquired.
The polymer organic acid is not particularly limited as long as it is an organic acid having a high electron density that adjusts the pH in the tank and generates radicals by reaction with ozone. Can be used. As such a high molecular organic acid, fulvic acid (humic acid) and humic acid (humic acid) can be typically used, and it is preferable that at least one or more of these are included.
As exemplified by the following formula, the high-molecular organic acid generates radicals such as hydroxyl radicals through an electron transfer reaction with ozone, and can promote the oxidation reaction in the accelerated oxidation tank.
(Formula 1) O 3 + high electron density organic acid → O 3 .organic acid (ozone adduct organic acid)
(Formula 2) O 3 .organic acid (ozone adduct organic acid) → O 3 − + organic acid +
(Formula 3) O 3 − + H + → HO 3 → OH + O 2
促進酸化の手法については,オゾン(O3)の供給,過酸化水素(H2O2)の供給,高分子有機酸(高電子密度有機酸)の供給,UVの照射,超音波装置,これらを単独もしくは複数組み合わせて用いることができる。これにより,促進酸化を効果的に行うことができるという効果が得られる。
高分子有機酸については,槽内におけるPHを調整するとともに,オゾンとの反応によってラジカルを発生させる高電子密度を持つ有機酸である限り,特に限定されるものではなく,種々の高分子有機酸を用いることができる。このような高分子有機酸としては,典型的には,フルボ酸(fulvic acid),フミン酸(humic acid)を用いることができ,これらのいずれか又は複数を少なくとも含んでいることが好ましい。
高分子有機酸は,下記式に例示されるように,オゾンとの電子移動反応を通じて,ヒドロキシルラジカルなどのラジカル体を発生し,促進酸化槽における酸化反応を促すことが可能となる。
(式1)O3+高電子密度有機酸 → O3・有機酸(オゾン付加体有機酸)
(式2)O3・有機酸(オゾン付加体有機酸) → O3 -+有機酸+
(式3)O3 -+H+ →HO3 →OH+O2 The oxidative decomposition in the accelerated oxidation tank is not particularly limited as long as oxidative decomposition is possible, and various methods can be adopted.
For the method of accelerated oxidation, supply of ozone (O 3 ), supply of hydrogen peroxide (H 2 O 2 ), supply of high molecular organic acid (high electron density organic acid), UV irradiation, ultrasonic equipment, etc. Can be used alone or in combination. Thereby, the effect that accelerated oxidation can be performed effectively is acquired.
The polymer organic acid is not particularly limited as long as it is an organic acid having a high electron density that adjusts the pH in the tank and generates radicals by reaction with ozone. Can be used. As such a high molecular organic acid, fulvic acid (humic acid) and humic acid (humic acid) can be typically used, and it is preferable that at least one or more of these are included.
As exemplified by the following formula, the high-molecular organic acid generates radicals such as hydroxyl radicals through an electron transfer reaction with ozone, and can promote the oxidation reaction in the accelerated oxidation tank.
(Formula 1) O 3 + high electron density organic acid → O 3 .organic acid (ozone adduct organic acid)
(Formula 2) O 3 .organic acid (ozone adduct organic acid) → O 3 − + organic acid +
(Formula 3) O 3 − + H + → HO 3 → OH + O 2
促進酸化槽における酸化分解は,さらに電気分解を組み合わせることによって行うことが好ましい。かかる好ましい構成によれば,促進酸化槽における酸化分解をさらに効率良く行うことができるという効果が得られる。
この場合,促進酸化槽は,その中心部に,電気分解を行う電気分解槽を備えることが好ましい。かかる好ましい構成によれば,中心部における促進酸化による分解の機能と,外部における浮遊分離の機能と,を分けることが可能となるので,汚排水の酸化分解と固形物の除去を効率良く行うことができるという効果が得られる。 The oxidative decomposition in the accelerated oxidation tank is preferably performed by further combining electrolysis. According to such a preferable configuration, an effect that the oxidative decomposition in the accelerated oxidation tank can be performed more efficiently is obtained.
In this case, the accelerated oxidation tank is preferably provided with an electrolysis tank for electrolysis at the center thereof. According to such a preferable configuration, it is possible to separate the function of decomposition by accelerated oxidation at the center and the function of floating separation at the outside, so that the oxidative decomposition of solid wastewater and the removal of solid matter can be performed efficiently. The effect of being able to be obtained.
この場合,促進酸化槽は,その中心部に,電気分解を行う電気分解槽を備えることが好ましい。かかる好ましい構成によれば,中心部における促進酸化による分解の機能と,外部における浮遊分離の機能と,を分けることが可能となるので,汚排水の酸化分解と固形物の除去を効率良く行うことができるという効果が得られる。 The oxidative decomposition in the accelerated oxidation tank is preferably performed by further combining electrolysis. According to such a preferable configuration, an effect that the oxidative decomposition in the accelerated oxidation tank can be performed more efficiently is obtained.
In this case, the accelerated oxidation tank is preferably provided with an electrolysis tank for electrolysis at the center thereof. According to such a preferable configuration, it is possible to separate the function of decomposition by accelerated oxidation at the center and the function of floating separation at the outside, so that the oxidative decomposition of solid wastewater and the removal of solid matter can be performed efficiently. The effect of being able to be obtained.
本発明においては,マイクロバブル発生器をさらに備え,促進酸化槽の底部においてマイクロバブルを発生させることが好ましい。かかる好ましい構成によれば,促進酸化槽内に流入・発生した固形物を浮遊させ,スカムポンプによって嫌気槽に返送しやすい構成とすることが可能となるので,システムからの固形物の除去を促進させることができるという効果が得られる。
マイクロバブル発生器については,促進酸化槽の底部におけるマイクロバブルの発生が可能な限り,特に限定されるものではなく,種々の性能のものを採用することができ,また,種々の位置に設置することができる。マイクロバブル発生器は,典型的には,図2,図4に示すように,促進酸化槽の上部に設置することができる。 In the present invention, it is preferable to further include a microbubble generator and generate microbubbles at the bottom of the accelerated oxidation tank. According to such a preferable configuration, it is possible to float the solid matter flowing into and generated in the accelerated oxidation tank and to easily return the solid matter to the anaerobic tank by the scum pump, thereby promoting the removal of the solid matter from the system. The effect that it can be obtained.
The microbubble generator is not particularly limited as long as microbubbles can be generated at the bottom of the accelerated oxidation tank, and those having various performances can be adopted and installed at various positions. be able to. Typically, the microbubble generator can be installed at the top of the accelerated oxidation tank as shown in FIGS.
マイクロバブル発生器については,促進酸化槽の底部におけるマイクロバブルの発生が可能な限り,特に限定されるものではなく,種々の性能のものを採用することができ,また,種々の位置に設置することができる。マイクロバブル発生器は,典型的には,図2,図4に示すように,促進酸化槽の上部に設置することができる。 In the present invention, it is preferable to further include a microbubble generator and generate microbubbles at the bottom of the accelerated oxidation tank. According to such a preferable configuration, it is possible to float the solid matter flowing into and generated in the accelerated oxidation tank and to easily return the solid matter to the anaerobic tank by the scum pump, thereby promoting the removal of the solid matter from the system. The effect that it can be obtained.
The microbubble generator is not particularly limited as long as microbubbles can be generated at the bottom of the accelerated oxidation tank, and those having various performances can be adopted and installed at various positions. be able to. Typically, the microbubble generator can be installed at the top of the accelerated oxidation tank as shown in FIGS.
本発明においては,促進酸化槽と電気分解槽が,同心の円筒状に形成されていることが好ましい。かかる好ましい構成によれば,促進酸化槽の底部で発生したマイクロバブルによる上部への水流を,抵抗の少ない状態で上部まで到達させることが可能となるので,固形物の浮遊分離を促進させることができるという効果が得られる。
In the present invention, the accelerated oxidation tank and the electrolysis tank are preferably formed in a concentric cylindrical shape. According to such a preferable configuration, it is possible to make the water flow to the upper part due to the microbubbles generated at the bottom of the accelerated oxidation tank reach the upper part with less resistance, so that the floating separation of solids can be promoted. The effect that it can be obtained.
これら一連の促進酸化により,意図的にヒドロキシルラジカルを発生させ,酸化力を向上・促進させることが可能となる。
すなわち,オゾンや過酸化水素,さらには図5に示すような紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるヒドロキシルラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。
さらに,オゾンや過酸化水素,UVなどによる分解が行われた後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。
また,促進酸化槽で発生したヒドロキシルラジカルを用いることにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。 Through this series of accelerated oxidations, it is possible to intentionally generate hydroxyl radicals and improve / promote oxidizing power.
That is, by using ozone, hydrogen peroxide, and ultraviolet rays (UV) as shown in FIG. 5 in combination, hydroxyl radicals, which are powerful oxidants, are generated, and hardly decomposed pollutants in water are decomposed. It can be removed. In particular, it can be expected to exhibit excellent effects in the decomposition and removal of fine pollutants such as dioxins, environmental hormones, and agricultural chemicals.
Furthermore, since the main product after the decomposition by ozone, hydrogen peroxide, UV, or the like is oxygen or water, there is an effect that almost no secondary waste is generated.
In addition, by using hydroxyl radicals generated in the accelerated oxidation tank, it is possible to bring about effects such as decolorization and deodorization in wastewater, COD reduction, and sterilization at the same time.
すなわち,オゾンや過酸化水素,さらには図5に示すような紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるヒドロキシルラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。
さらに,オゾンや過酸化水素,UVなどによる分解が行われた後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。
また,促進酸化槽で発生したヒドロキシルラジカルを用いることにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。 Through this series of accelerated oxidations, it is possible to intentionally generate hydroxyl radicals and improve / promote oxidizing power.
That is, by using ozone, hydrogen peroxide, and ultraviolet rays (UV) as shown in FIG. 5 in combination, hydroxyl radicals, which are powerful oxidants, are generated, and hardly decomposed pollutants in water are decomposed. It can be removed. In particular, it can be expected to exhibit excellent effects in the decomposition and removal of fine pollutants such as dioxins, environmental hormones, and agricultural chemicals.
Furthermore, since the main product after the decomposition by ozone, hydrogen peroxide, UV, or the like is oxygen or water, there is an effect that almost no secondary waste is generated.
In addition, by using hydroxyl radicals generated in the accelerated oxidation tank, it is possible to bring about effects such as decolorization and deodorization in wastewater, COD reduction, and sterilization at the same time.
[第一膜分離槽]
第一膜分離槽は,促進酸化槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第一膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,第一膜分離槽は,後述する第二膜分離槽と比較すると,いわゆる粗分離としての性質を有するものであり,第一膜分離槽ないし第二膜分離槽において用いられる膜としては,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)を適宜組み合わせて用いればよい。第一膜分離槽においては,典型的には,UF膜を用いればよい。 [First membrane separation tank]
The first membrane separation tank functions to purify the wastewater supplied from the accelerated oxidation tank by membrane separation. The first membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
In addition, the first membrane separation tank has properties as a so-called coarse separation as compared with the second membrane separation tank described later. As the membrane used in the first membrane separation tank or the second membrane separation tank, An MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration membrane) or RO membrane (reverse osmosis membrane) may be used in appropriate combination. Typically, a UF membrane may be used in the first membrane separation tank.
第一膜分離槽は,促進酸化槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第一膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
また,第一膜分離槽は,後述する第二膜分離槽と比較すると,いわゆる粗分離としての性質を有するものであり,第一膜分離槽ないし第二膜分離槽において用いられる膜としては,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)を適宜組み合わせて用いればよい。第一膜分離槽においては,典型的には,UF膜を用いればよい。 [First membrane separation tank]
The first membrane separation tank functions to purify the wastewater supplied from the accelerated oxidation tank by membrane separation. The first membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
In addition, the first membrane separation tank has properties as a so-called coarse separation as compared with the second membrane separation tank described later. As the membrane used in the first membrane separation tank or the second membrane separation tank, An MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration membrane) or RO membrane (reverse osmosis membrane) may be used in appropriate combination. Typically, a UF membrane may be used in the first membrane separation tank.
[オゾン接触槽]
オゾン接触槽は,第一膜分離槽から供給される汚排水をオゾンにより浄化処理する機能を果たす。オゾン接触槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。 [Ozone contact tank]
The ozone contact tank functions to purify the wastewater supplied from the first membrane separation tank with ozone. The ozone contact tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
オゾン接触槽は,第一膜分離槽から供給される汚排水をオゾンにより浄化処理する機能を果たす。オゾン接触槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。 [Ozone contact tank]
The ozone contact tank functions to purify the wastewater supplied from the first membrane separation tank with ozone. The ozone contact tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
[生物活性炭槽]
生物活性炭槽は,オゾン接触槽から供給される汚排水を生物活性炭により浄化処理する機能を果たす。生物活性炭槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。 [Bioactive activated carbon tank]
The biological activated carbon tank functions to purify the wastewater supplied from the ozone contact tank with biological activated carbon. The biological activated carbon tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
生物活性炭槽は,オゾン接触槽から供給される汚排水を生物活性炭により浄化処理する機能を果たす。生物活性炭槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。 [Bioactive activated carbon tank]
The biological activated carbon tank functions to purify the wastewater supplied from the ozone contact tank with biological activated carbon. The biological activated carbon tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
[第二膜分離槽]
第二膜分離槽は,生物活性炭槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第二膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
第二膜分離槽は,処理水を最終的にシステム外へ放出する出口として機能するものであり,放出された処理水の使用用途に応じて,適宜,用いる膜を選択することができる。 [Second membrane separation tank]
The second membrane separation tank functions to purify the wastewater supplied from the biological activated carbon tank by membrane separation. The second membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
The second membrane separation tank functions as an outlet for finally discharging the treated water to the outside of the system, and the membrane to be used can be appropriately selected according to the use application of the discharged treated water.
第二膜分離槽は,生物活性炭槽から供給される汚排水を膜分離により浄化処理する機能を果たす。第二膜分離槽は,かかる機能を果たす限り,特に限定されるものではなく,種々の構成のものを採用することができる。
第二膜分離槽は,処理水を最終的にシステム外へ放出する出口として機能するものであり,放出された処理水の使用用途に応じて,適宜,用いる膜を選択することができる。 [Second membrane separation tank]
The second membrane separation tank functions to purify the wastewater supplied from the biological activated carbon tank by membrane separation. The second membrane separation tank is not particularly limited as long as it fulfills such a function, and various configurations can be adopted.
The second membrane separation tank functions as an outlet for finally discharging the treated water to the outside of the system, and the membrane to be used can be appropriately selected according to the use application of the discharged treated water.
<<II.実施の形態>>
[実施の形態1]
以下,本発明の実施の形態1における汚排水浄化システムの構成について,図1から図5を参照しながら説明する。 << II. Embodiment >>
[Embodiment 1]
Hereinafter, the configuration of the wastewater purification system according toEmbodiment 1 of the present invention will be described with reference to FIGS. 1 to 5.
[実施の形態1]
以下,本発明の実施の形態1における汚排水浄化システムの構成について,図1から図5を参照しながら説明する。 << II. Embodiment >>
[Embodiment 1]
Hereinafter, the configuration of the wastewater purification system according to
図1は本発明の実施の形態1における汚排水浄化システムの構成と流れを示す概念図,図2は当該汚排水浄化システムの全体構成を示す立面図,図3は当該汚排水浄化システムの全体構成を示す平面図,図4は当該汚排水浄化システムを構成する促進酸化槽を示す図((a)は立面図,(b)は平面図),図5は当該汚排水浄化システムを構成する促進酸化循環装置(マイクロバブル発生器)を示す立面図である。
FIG. 1 is a conceptual diagram showing the configuration and flow of a wastewater purification system according to Embodiment 1 of the present invention, FIG. 2 is an elevation view showing the overall configuration of the wastewater purification system, and FIG. 4 is a plan view showing the overall configuration, FIG. 4 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view, (b) is a plan view), and FIG. 5 is the wastewater purification system. It is an elevational view showing an accelerated oxidation circulator (microbubble generator) to be configured.
図1から図3に示すように,本実施の形態の汚排水浄化システム1は,上流側(汚排水発生源側)から順に配置された,汚排水発生源から供給される汚排水(原水)を浄化処理する原水集水槽2(図2,図3では不図示)と,原水集水槽2で浄化処理された汚排水を嫌気性菌により浄化処理する嫌気槽3と,嫌気槽3で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽4と,無酸素槽4で浄化処理された汚排水を好気性菌により浄化処理する好気槽5と,好気槽5で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽6と,促進酸化槽6で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽7と,第一膜分離槽7で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽8と,オゾン接触槽8で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽9と,生物活性炭槽9で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽10(図2,図3では不図示)と,第二膜分離槽10で浄化処理されて得られた処理水を貯水する処理水貯水槽11(図2では不図示)と,を備えている。
原水集水槽2,嫌気槽3,無酸素槽4,好気槽5,促進酸化槽6は,それぞれ,円筒タンクからなり,これらは縦置きにされている。
また,第一膜分離槽7,オゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11は,それぞれ,角筒タンクからなり,これらも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はなく,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6やオゾン接触槽8においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。 As shown in FIG. 1 to FIG. 3, thewastewater purification system 1 of the present embodiment is arranged in order from the upstream side (sewage generation source side), and wastewater (raw water) supplied from the wastewater generation source. Purification process in the raw water collection tank 2 (not shown in FIGS. 2 and 3), the anaerobic tank 3 in which the waste water purified in the raw water collection tank 2 is purified by anaerobic bacteria, and the anaerobic tank 3 The anaerobic tank 4 for purifying the sewage wastewater treated by denitrifying bacteria, the aerobic tank 5 for purifying the sewage wastewater purified by the anaerobic tank 4 by aerobic bacteria, and the aerobic tank 5 The oxidative decomposition tank 6 for purifying the sewage wastewater by oxidative decomposition, the first membrane separation tank 7 for purifying the sewage wastewater purified by the accelerated oxidation tank 6 by membrane separation, and the first membrane separation tank 7 for purification The ozone contact tank 8 that purifies the treated wastewater with ozone and the ozone contact tank 8 The biological activated carbon tank 9 that purifies the wastewater that has been treated with biological activated carbon, and the second membrane separation tank 10 that purifies the wastewater that has been purified in the biological activated carbon tank 9 by membrane separation (in FIGS. 2 and 3) And a treated water storage tank 11 (not shown in FIG. 2) for storing treated water obtained by purification in the second membrane separation tank 10.
The rawwater collecting tank 2, the anaerobic tank 3, the anoxic tank 4, the aerobic tank 5, and the accelerated oxidation tank 6 are each composed of a cylindrical tank, and these are placed vertically.
The firstmembrane separation tank 7, the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11 are each composed of a rectangular tube tank, and these are also placed vertically.
In addition, it is not necessary to limit in particular about the raw material of these cylindrical tanks and square cylinder tanks, and what is necessary is just to use the thing made from PVC (polyvinyl chloride) typically.
Further, in the acceleratedoxidation tank 6 and the ozone contact tank 8, it is necessary to use a material having high resistance to radical reaction or the like, and typically, a stainless material or the like may be used.
原水集水槽2,嫌気槽3,無酸素槽4,好気槽5,促進酸化槽6は,それぞれ,円筒タンクからなり,これらは縦置きにされている。
また,第一膜分離槽7,オゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11は,それぞれ,角筒タンクからなり,これらも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はなく,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6やオゾン接触槽8においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。 As shown in FIG. 1 to FIG. 3, the
The raw
The first
In addition, it is not necessary to limit in particular about the raw material of these cylindrical tanks and square cylinder tanks, and what is necessary is just to use the thing made from PVC (polyvinyl chloride) typically.
Further, in the accelerated
これら各槽は,他のいずれか又は複数の槽に近接して配置されている。そして,嫌気槽3と無酸素槽4,ならびに,無酸素槽4と好気槽5は,それぞれ,底部で連通孔12,13を介して直接繋がっている。また,好気槽5と促進酸化槽6,促進酸化槽6と第一膜分離槽7,オゾン接触槽8と生物活性炭槽9,生物活性炭槽9と第二膜分離槽10,ならびに,第二膜分離槽10と処理水貯水槽11は,それぞれ,上部で連通管14,15,16等を介して連通されている。ここで,連通管14,15,16等は,各槽の底面からほぼ同じ高さの位置に設けられており,これにより,各槽における水位が同一に保持される構成となっている。
以上の構成により,重力に従った自然流荷原理により処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。 Each of these tanks is arranged close to any other or a plurality of tanks. Theanaerobic tank 3 and the anaerobic tank 4, and the anoxic tank 4 and the aerobic tank 5 are directly connected to each other through the communication holes 12 and 13 at the bottom. Also, the aerobic tank 5, the accelerated oxidation tank 6, the accelerated oxidation tank 6, the first membrane separation tank 7, the ozone contact tank 8, the biological activated carbon tank 9, the biological activated carbon tank 9, the second membrane separation tank 10, and the second The membrane separation tank 10 and the treated water storage tank 11 are communicated with each other via communication pipes 14, 15, 16 and the like at the upper part. Here, the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, so that the water level in each tank is kept the same.
With the above configuration, it is possible to move the treated water by the principle of natural freight according to gravity, and to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, the positional deviation between the tanks can be almost eliminated and the length of the pipe can be shortened as much as possible. With this configuration, it is possible to realize a wastewater purification system that is extremely resistant to displacement and distortion of piping.
以上の構成により,重力に従った自然流荷原理により処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。 Each of these tanks is arranged close to any other or a plurality of tanks. The
With the above configuration, it is possible to move the treated water by the principle of natural freight according to gravity, and to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, the positional deviation between the tanks can be almost eliminated and the length of the pipe can be shortened as much as possible. With this configuration, it is possible to realize a wastewater purification system that is extremely resistant to displacement and distortion of piping.
本実施の形態の汚排水浄化システム1においては,原水集水槽2に汚排水(原水)が一定量溜まると,汚水ポンプ(不図示)が自動的に起動し,原水集水槽2内の汚排水が移送パイプ17を介して嫌気槽3へ圧送されるように構成されている。そして,嫌気槽3に汲み上げられた汚排水は,連通孔12,13および連通管14,15を介して無酸素槽4,好気槽5,促進酸化槽6,第一膜分離槽7の順に移動する。このように,原水集水槽2内の汚排水の水位が上がると,当該汚排水が自動的に嫌気槽3,無酸素槽4,好気槽5,第一膜分離槽7の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。 In the sewagedrainage purification system 1 of this embodiment, when a certain amount of sewage (raw water) accumulates in the raw water catchment tank 2, a sewage pump (not shown) is automatically activated, and the sewage drainage in the raw water catchment tank 2 is activated. Is configured to be pumped to the anaerobic tank 3 through the transfer pipe 17. The wastewater pumped up in the anaerobic tank 3 is passed through the communication holes 12 and 13 and the communication pipes 14 and 15 in the order of the anaerobic tank 4, the aerobic tank 5, the accelerated oxidation tank 6, and the first membrane separation tank 7. Moving. Thus, when the level of the wastewater in the raw water collecting tank 2 rises, the wastewater automatically moves in the order of the anaerobic tank 3, the anaerobic tank 4, the aerobic tank 5, and the first membrane separation tank 7. , No problem arises in the flow of sewage even if a flow control tank is not provided separately. As a result, the wastewater purification system can be made compact.
Further, the waste water in the firstmembrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by a self-priming pump 18. And the wastewater pumped up by the ozone contact tank 8 moves in order of the biological activated carbon tank 9, the 2nd membrane separation tank 10, and the treated water storage tank 11 via the communicating pipe 16 grade | etc.,. Thus, the waste water in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the second membrane separation tank 10, and the treated water storage tank 11. Even if there is no separate installation, there will be no problem with the flow of wastewater. As a result, the wastewater purification system can be made compact.
Here, the case where the wastewater in the firstmembrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited. For example, a communication hole (not shown) for moving the waste water after the first membrane separation treatment to the ozone contact tank 8 according to gravity may be provided at the bottom.
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,第二膜分離槽10,処理水貯水槽11の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。 In the sewage
Further, the waste water in the first
Here, the case where the wastewater in the first
原水集水槽2は,汚排水発生源から供給される汚排水(原水)から夾雑固形物を除去するスクリーン機能を有している。そして,夾雑固形物が除去された後の汚排水は,嫌気槽3,無酸素槽4,好気槽5において嫌気性菌による嫌気性分解,好気性菌による好気性分解等を受けて浄化処理される。
The raw water collecting tank 2 has a screen function for removing contaminated solids from the wastewater (raw water) supplied from the wastewater generation source. Then, the wastewater after the removal of contaminated solids is purified by receiving anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria, etc. in anaerobic tank 3, anoxic tank 4 and aerobic tank 5. Is done.
嫌気槽3には嫌気性菌が投入されている。そして,原水集水槽2から嫌気槽3に汲み上げられた汚排水は,当該嫌気槽3内において,嫌気性菌による嫌気性分解(還元反応)を受けて浄化処理される。
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機(デカンタ)20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。
図2中,参照符号23は,嫌気槽3中の嫌気菌により有機物の嫌気分解処理と好気槽から返送されたPAO菌によりリン処理を促進させるために嫌気槽3内を撹拌する撹拌用ポンプを示している。 Anaerobic bacteria are introduced into theanaerobic tank 3. Then, the wastewater pumped up from the raw water collecting tank 2 to the anaerobic tank 3 is subjected to purification treatment in the anaerobic tank 3 by receiving anaerobic decomposition (reduction reaction) by anaerobic bacteria.
Moreover, in theanaerobic tank 3, the submersible pump 19 started intermittently is installed. The submersible pump 19 is connected to one end of a first transfer pipe 21 whose other end is connected to an inlet of a solid-liquid separator (decanter) 20. One end of the second transfer pipe 22 whose end is located in the anoxic tank 4 is connected. Thereby, the fine solid contained in the waste water pumped up in the anaerobic tank 3 can be discharged and removed from the discharge port of the solid-liquid separator 20.
In FIG. 2,reference numeral 23 denotes an agitation pump for agitating the inside of the anaerobic tank 3 in order to promote the anaerobic decomposition treatment of organic substances by the anaerobic bacteria in the anaerobic tank 3 and the phosphorus treatment by the PAO bacteria returned from the aerobic tank Is shown.
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機(デカンタ)20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。
図2中,参照符号23は,嫌気槽3中の嫌気菌により有機物の嫌気分解処理と好気槽から返送されたPAO菌によりリン処理を促進させるために嫌気槽3内を撹拌する撹拌用ポンプを示している。 Anaerobic bacteria are introduced into the
Moreover, in the
In FIG. 2,
嫌気槽3で浄化処理された汚排水は,固液分離機20および連通孔12を介して無酸素槽4に移動される。
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4の水面に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌によってアンモニア態窒素が硝化されることで硝酸態窒素や亜硝酸態窒素が返送され,無酸素槽内で増殖された脱窒菌と無酸素状態で接触する。そして,脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号27は,無酸素槽4中の窒素除去処理を促進させるために無酸素槽4内を撹拌する撹拌用ポンプを示している。 The wastewater discharged in theanaerobic tank 3 is moved to the anaerobic tank 4 through the solid-liquid separator 20 and the communication hole 12.
A self-primingpump 24 is installed in the upper part of the anaerobic tank 4. The other end of the first return pipe 25 is connected to the inlet of the self-priming pump 24 and the other end is located in the aerobic tank 5 at the rear stage. Is connected to one end of the second return pipe 26 located on the water surface of the anoxic tank 4. As a result, nitrate nitrogen and nitrite nitrogen were returned to the anaerobic tank 4 by nitrification of ammonia nitrogen by the nitrifying bacteria grown in the aerobic tank 5 and propagated in the anoxic tank. Contact with denitrifying bacteria in anoxic condition. Then, denitrifying bacteria perform denitrification using the organic component in the wastewater as a hydrogen donor, so that nitrate nitrogen in the wastewater is changed to nitrogen gas and removed.
In FIG. 2,reference numeral 27 indicates a stirring pump that stirs the inside of the anoxic tank 4 in order to promote the nitrogen removing process in the anoxic tank 4.
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4の水面に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌によってアンモニア態窒素が硝化されることで硝酸態窒素や亜硝酸態窒素が返送され,無酸素槽内で増殖された脱窒菌と無酸素状態で接触する。そして,脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号27は,無酸素槽4中の窒素除去処理を促進させるために無酸素槽4内を撹拌する撹拌用ポンプを示している。 The wastewater discharged in the
A self-priming
In FIG. 2,
無酸素槽4で浄化処理された汚排水は,連通孔13を介して好気槽5に移動される。この好気槽5には,好気性菌である硝化菌が投入されている。そして,無酸素槽4で浄化処理された汚排水は,好気槽5内で曝気処理され,好気槽5に投入培養された好気性菌による有機物の酸化分解が行われるとともに,アンモニアはアンモニア酸化菌と亜硝酸酸化菌によって硝酸,亜硝酸になる硝化反応が行われる。
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,嫌気槽3,無酸素槽4,好気槽5においては,遠赤外線を通じて微生物の活性化と保温断熱効果が高められるように工夫されている。 The dirty wastewater purified in theanaerobic tank 4 is moved to the aerobic tank 5 through the communication hole 13. The aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria. The wastewater purified in the anaerobic tank 4 is aerated in the aerobic tank 5 and oxidative decomposition of organic substances is performed by aerobic bacteria introduced and cultured in the aerobic tank 5, and ammonia is converted into ammonia. Nitrification and nitric acid are performed by oxidizing bacteria and nitrite oxidizing bacteria.
A self-primingpump 28 is installed above the oxygen-free tank 4. One end of a third return pipe 29 whose other end is located in the aerobic tank 5 is connected to the inlet of the self-priming pump 28, and the other end is anaerobic to the outlet of the self-priming pump 28. One end of a fourth return pipe 30 located just above the water surface of the tank 3 is connected. Thereby, since a series of purification processes in the anaerobic tank 3, the anoxic tank 4, and the aerobic tank 5 can be repeatedly performed, it is possible to improve the quality of the purification process.
Theaerobic tank 5 includes an upstream aerobic tank 5a and a downstream aerobic tank 5b. The anaerobic tank 4 and the upstream aerobic tank 5a are directly connected to each other through the communication hole 13 at the bottom. The other end of the first return pipe 25 is located in the upstream aerobic tank 5a. The other end of the third return pipe 29 is located in the downstream aerobic tank 5b.
Moreover, in theanaerobic tank 3, the anoxic tank 4, and the aerobic tank 5, it is devised so that the activation of microorganisms and the heat insulation and heat insulation effect can be enhanced through far-infrared rays.
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,嫌気槽3,無酸素槽4,好気槽5においては,遠赤外線を通じて微生物の活性化と保温断熱効果が高められるように工夫されている。 The dirty wastewater purified in the
A self-priming
The
Moreover, in the
好気槽5で浄化処理された汚排水は,連通管14を介して促進酸化槽6に移動される。そして,好気槽5で浄化処理された汚排水は,促進酸化槽6内で酸化分解により浄化処理される。
図2から図4に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。 The wastewater that has been purified in theaerobic tank 5 is moved to the accelerated oxidation tank 6 through the communication pipe 14. The sewage wastewater purified in the aerobic tank 5 is purified in the accelerated oxidation tank 6 by oxidative decomposition.
As shown in FIGS. 2 to 4, ascum pump 31 is suspended in the accelerated oxidation tank 6, and the other end of the scum pump 31 has a fifth return pipe 32 positioned immediately above the water surface of the anaerobic tank 3. One end is connected. As a result, the fine solids flowing into and generated in the accelerated oxidation tank 6 are returned to the anaerobic tank 3 and can be discharged and removed from the discharge port of the solid-liquid separator 20.
図2から図4に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。 The wastewater that has been purified in the
As shown in FIGS. 2 to 4, a
図2から図5に示すように,本実施の形態の汚排水浄化システム1は,促進酸化循環装置(マイクロバブル発生器)34を備えており,促進酸化槽6の底部においてマイクロバブルを発生させることができるようにされている。かかる構成によれば,促進酸化槽6内に流入・発生した微細固形物を浮遊させ,スカムポンプ31によって嫌気槽3に返送しやすくなるので,システムからの微細固形物の除去を促進させることができる。
As shown in FIGS. 2 to 5, the wastewater purification system 1 of the present embodiment includes an accelerated oxidation circulation device (microbubble generator) 34 and generates microbubbles at the bottom of the accelerated oxidation tank 6. Have been able to. According to such a configuration, the fine solids flowing into and generated in the accelerated oxidation tank 6 are floated and can be easily returned to the anaerobic tank 3 by the scum pump 31, so that the removal of the fine solids from the system can be promoted. .
より具体的には,促進酸化循環装置(マイクロバブル発生器)34は,促進酸化循環装置本体35と,促進酸化槽6内に設置され,揚水管36を介して促進酸化循環装置本体35の一端に接続された水中ポンプ37と,促進酸化循環装置本体35の他端に接続され,先端のマイクロバブル放出部38aが促進酸化槽6内の底部に配置される放出管38と,を備えている。
促進酸化循環装置本体35は,揚水管36に接続された微細気泡発生ノズル39と,当該微細気泡発生ノズル39と放出管38との間に順に配置された,UVランプ40,TiO2 ボール41が封入された石英管42,気液混合管43と,を備えており,微細気泡発生ノズル39部分に過酸化水素(H2O2),高分子有機酸(フルボ酸,フミン酸など),オゾン(O3)を単独もしくは複数組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,PVC(ポリ塩化ビニル)製の円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。また,電気分解槽33と促進酸化槽6は,上部で連通管48を介して連通されている。ここで,連通管48は,上述した連通管14,15,16等とほぼ同じ高さの位置に設けられている。 More specifically, the accelerated oxidation circulation device (microbubble generator) 34 is installed in the accelerated oxidation circulation devicemain body 35 and the accelerated oxidation tank 6, and is connected to one end of the accelerated oxidation circulation device main body 35 via the pumping pipe 36. And a discharge pipe 38 connected to the other end of the promoted oxidation circulator main body 35 and having a microbubble discharge part 38a at the tip disposed at the bottom of the promoted oxidation tank 6. .
The accelerated oxidation circulation devicemain body 35 includes a fine bubble generating nozzle 39 connected to the pumping pipe 36, and a UV lamp 40 and a TiO 2 ball 41 arranged in this order between the fine bubble generating nozzle 39 and the discharge pipe 38. A sealed quartz tube 42 and a gas-liquid mixing tube 43 are provided. Hydrogen peroxide (H 2 O 2 ), a polymer organic acid (fulvic acid, humic acid, etc.), ozone, etc. are formed in the fine bubble generating nozzle 39. (O 3 ) can be sent alone or in combination.
In the acceleratedoxidation tank 6, an electrolysis tank 33 made of a PVC (polyvinyl chloride) cylindrical tank is concentrically arranged. A TiO2 anode plate 46a, 46b is arranged. The accelerated oxidation tank 6 and the electrolysis tank 33 are directly connected via a communication hole 47 at the bottom. Further, the electrolysis tank 33 and the accelerated oxidation tank 6 are communicated with each other via a communication pipe 48 at the upper part. Here, the communication pipe 48 is provided at a position substantially the same height as the above-described communication pipes 14, 15, 16 and the like.
促進酸化循環装置本体35は,揚水管36に接続された微細気泡発生ノズル39と,当該微細気泡発生ノズル39と放出管38との間に順に配置された,UVランプ40,TiO2 ボール41が封入された石英管42,気液混合管43と,を備えており,微細気泡発生ノズル39部分に過酸化水素(H2O2),高分子有機酸(フルボ酸,フミン酸など),オゾン(O3)を単独もしくは複数組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,PVC(ポリ塩化ビニル)製の円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。また,電気分解槽33と促進酸化槽6は,上部で連通管48を介して連通されている。ここで,連通管48は,上述した連通管14,15,16等とほぼ同じ高さの位置に設けられている。 More specifically, the accelerated oxidation circulation device (microbubble generator) 34 is installed in the accelerated oxidation circulation device
The accelerated oxidation circulation device
In the accelerated
以上の構成を備えた促進酸化槽6により,意図的にOHラジカルを発生させ,酸化力を向上・促進させることが可能となる。すなわち,オゾンや過酸化水素,さらには紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるヒドロキシルラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。また,オゾンや過酸化水素,高分子有機酸の組み合わせにより,分解後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。さらに,オゾンを用いるなどにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。 The acceleratedoxidation tank 6 having the above configuration can intentionally generate OH radicals and improve / promote the oxidizing power. In other words, by combining ozone, hydrogen peroxide, and even ultraviolet rays (UV), it is possible to generate hydroxyl radicals, which are powerful oxidants, and to decompose and remove persistent degradable pollutants in water. Become. In particular, it can be expected to exhibit excellent effects in the decomposition and removal of fine pollutants such as dioxins, environmental hormones, and agricultural chemicals. In addition, the combination of ozone, hydrogen peroxide, and high-molecular organic acid produces the effect that almost no secondary waste is generated because the main products after decomposition are oxygen and water. Furthermore, by using ozone, it is possible to bring about effects such as decolorization, deodorization, COD reduction, and sterilization in wastewater.
Further, in the oxidative decomposition in the acceleratedoxidation tank 6, as described above, by further combining electrolysis, the oxidative decomposition in the accelerated oxidation tank 6 can be performed more efficiently.
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。 The accelerated
Further, in the oxidative decomposition in the accelerated
図1から図3に示すように,促進酸化槽6で浄化処理された汚排水は,連通管15を介して第一膜分離槽7に移動される。そして,促進酸化槽6で浄化処理された汚排水は,第一膜分離槽7内で膜分離により浄化処理される。
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図2中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。
なお,第一膜分離槽7で捕捉された固形物や剥離した生物膜は,逆洗水として嫌気槽3へ移送される。 As shown in FIGS. 1 to 3, the wastewater purified in the acceleratedoxidation tank 6 is moved to the first membrane separation tank 7 through the communication pipe 15. Then, the wastewater purified in the accelerated oxidation tank 6 is purified in the first membrane separation tank 7 by membrane separation.
The firstmembrane separation tank 7 has a property of so-called rough separation as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane. It has been.
In FIG. 2,reference numeral 50 indicates an air diffuser. The air diffuser 50 functions to supply oxygen to the activated sludge and to clean the membrane surface by the upward flow of bubbles.
In addition, the solid substance trapped in the firstmembrane separation tank 7 and the peeled biofilm are transferred to the anaerobic tank 3 as backwash water.
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図2中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。
なお,第一膜分離槽7で捕捉された固形物や剥離した生物膜は,逆洗水として嫌気槽3へ移送される。 As shown in FIGS. 1 to 3, the wastewater purified in the accelerated
The first
In FIG. 2,
In addition, the solid substance trapped in the first
第一膜分離槽7で浄化処理された汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられる。そして,第一膜分離槽7で浄化処理された汚排水は,オゾン接触槽8内でオゾンにより浄化処理される。
図2中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。 The wastewater purified in the firstmembrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified in the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
In FIG. 2, reference numeral 51 indicates a submerged pump-type nano-micro bubble injection, and nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the firstmembrane separation tank 7. The sewage wastewater that has been subjected to purification treatment can be further purified.
図2中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。 The wastewater purified in the first
In FIG. 2, reference numeral 51 indicates a submerged pump-type nano-micro bubble injection, and nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the first
オゾン接触槽8で浄化処理された汚排水は,連通管16を介して生物活性炭槽9に移動される。そして,オゾン接触槽8で浄化処理された汚排水は,生物活性炭槽9内で生物活性炭52により浄化処理される。
The wastewater purified in the ozone contact tank 8 is moved to the biological activated carbon tank 9 through the communication pipe 16. Then, the wastewater purified by the ozone contact tank 8 is purified by the biological activated carbon 52 in the biological activated carbon tank 9.
図1に示すように,生物活性炭槽9で浄化処理された汚排水は,第二膜分離槽10に移動される。そして,生物活性炭槽9で浄化処理された汚排水は,第二膜分離槽10内で膜分離により浄化処理される。
第二膜分離槽10における膜としては,得られる処理水の使用用途に応じて,MF膜(精密ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)などが用いられる。 As shown in FIG. 1, the waste water purified in the biological activatedcarbon tank 9 is moved to the second membrane separation tank 10. Then, the wastewater purified in the biological activated carbon tank 9 is purified in the second membrane separation tank 10 by membrane separation.
As the membrane in the secondmembrane separation tank 10, an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane), an RO membrane (reverse osmosis membrane) or the like is used according to the intended use of the treated water obtained.
第二膜分離槽10における膜としては,得られる処理水の使用用途に応じて,MF膜(精密ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)などが用いられる。 As shown in FIG. 1, the waste water purified in the biological activated
As the membrane in the second
図1,図3に示すように,第二膜分離槽10で浄化処理されて得られた処理水は,処理水貯水槽11に貯められる。処理水貯水槽11に貯められた処理水は,水質が政令で定める技術上の基準に適合していれば,河川等に放流してもよい。また,河川等に放流することなく,敷地内で処理するようにしてもよい(再使用)。
As shown in FIGS. 1 and 3, the treated water obtained by purification in the second membrane separation tank 10 is stored in a treated water storage tank 11. The treated water stored in the treated water storage tank 11 may be discharged into a river or the like as long as the water quality conforms to the technical standards specified by a Cabinet Order. Moreover, you may make it process within a site, without discharging to a river etc. (reuse).
本実施の形態の汚排水浄化システム1は,例えば,トイレ室の汚水槽(汚排水発生源)から供給される汚排水の浄化処理に適用することができる。また,図6に示すように,畜舎から供給される汚排水の浄化処理に適用することもでき,この場合,原水集水槽2で除去された夾雑固形物や嫌気槽3で除去された微細固形物を堆肥化することができる。
The sewage purification system 1 according to the present embodiment can be applied to, for example, purification treatment of sewage supplied from a sewage tank (sewage generation source) in a toilet room. Moreover, as shown in FIG. 6, it can also be applied to the purification treatment of the wastewater supplied from the barn. In this case, the solid solids removed in the raw water collecting tank 2 and the fine solids removed in the anaerobic tank 3 are used. Things can be composted.
[実施の形態2]
次に,本発明の実施の形態2における汚排水浄化システムの構成について,図7から図13を参照しながら説明する。 [Embodiment 2]
Next, the configuration of the wastewater purification system according toEmbodiment 2 of the present invention will be described with reference to FIGS.
次に,本発明の実施の形態2における汚排水浄化システムの構成について,図7から図13を参照しながら説明する。 [Embodiment 2]
Next, the configuration of the wastewater purification system according to
図7は本発明の実施の形態2における汚排水浄化システムの構成と流れを示す概念図,図8は当該汚排水浄化システムの全体構成を示す立面図,図9は当該汚排水浄化システムの全体構成を示す平面図,図10は当該汚排水浄化システムを構成する促進酸化槽を示す図((a)は立面図,(b)は平面図),図11は当該汚排水浄化システムを構成する促進酸化装置(マイクロバブル発生器)を示す立面図((a)はオゾンガスと過酸化水素水混合注入型,(b)はオゾン水と過酸化水素水分離注入型),図12および図13は当該汚排水浄化システムを構成する促進酸化槽の構造に起因する効果を説明するための図である。
FIG. 7 is a conceptual diagram showing the configuration and flow of the wastewater purification system according to Embodiment 2 of the present invention, FIG. 8 is an elevation view showing the overall configuration of the wastewater purification system, and FIG. FIG. 10 is a plan view showing the overall configuration, FIG. 10 is a diagram showing an accelerated oxidation tank constituting the wastewater purification system ((a) is an elevation view, (b) is a plan view), and FIG. 11 is the wastewater purification system. FIG. 12 is an elevation view of the accelerating oxidizer (microbubble generator) that is configured ((a) is a mixed injection type of ozone gas and hydrogen peroxide solution, (b) is a separate injection type of ozone water and hydrogen peroxide solution), FIG. FIG. 13 is a diagram for explaining the effects resulting from the structure of the accelerated oxidation tank constituting the wastewater purification system.
図7から図9に示すように,本実施の形態の汚排水浄化システム53は,上流側(汚排水発生源側)から順に配置された,汚排水発生源から供給される汚排水(原水)を浄化処理する原水集水槽2(図8では不図示)と,原水集水槽2で浄化処理された汚排水を嫌気性菌により浄化処理する嫌気槽3と,嫌気槽3で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽4と,無酸素槽4で浄化処理された汚排水を好気性菌により浄化処理する好気槽5と,好気槽5で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽6と,促進酸化槽6で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽54と,生物曝気槽54で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽7と,第一膜分離槽7で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽8と,オゾン接触槽8で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽9と,を備えている。
生物活性炭槽9で浄化処理された汚排水は,処理水槽55(図8では不図示)に貯められる。処理水槽55に貯められた処理水は,第二膜分離槽10(図8では不図示)に移送され,MF膜(精密ろ過膜),NF膜(ナノろ過膜)などを用いた膜分離により浄化処理されて処理水槽55に返送される。そして,水質が政令で定める技術上の基準に適合していれば,河川等に放流される。一方,水質が政令で定める技術上の基準に適合していなければ,河川等に放流されることなく,産業用水として使用される。また,第二膜分離槽10でRO膜(逆浸透膜)を用いた膜分離により浄化処理されて得られた処理水は,精製水槽56に貯められ,精製水(飲用水)として使用される。 As shown in FIG. 7 to FIG. 9, thewastewater purification system 53 of the present embodiment is disposed in order from the upstream side (the wastewater generation source side), and the wastewater (raw water) supplied from the wastewater generation source. The raw water collecting tank 2 (not shown in FIG. 8) for purifying the wastewater, the anaerobic tank 3 for purifying the wastewater purified in the raw water collecting tank 2 by anaerobic bacteria, and the soil purified in the anaerobic tank 3 An anaerobic tank 4 for purifying wastewater by denitrifying bacteria, an aerobic tank 5 for purifying wastewater purified by the anaerobic tank 4 by an aerobic bacteria, and wastewater purified by the aerobic tank 5 The oxidation oxidation tank 6 for purification treatment by oxidative decomposition, the biological aeration tank 54 for purification treatment of the wastewater purified by the promotion oxidation tank 6 by biological treatment, and the wastewater wastewater purified by the biological aeration tank 54 as a membrane Purified in the first membrane separation tank 7 to be purified by separation and the first membrane separation tank 7 An ozone contact tank 8 the treated dirty drain the purifying process with ozone, purification treated dirty waste water with ozone contact tank 8 and a, a biological activated carbon tank 9 to the purification treatment by biological activated carbon.
The wastewater purified in the biological activatedcarbon tank 9 is stored in a treated water tank 55 (not shown in FIG. 8). The treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 (not shown in FIG. 8) and is subjected to membrane separation using an MF membrane (microfiltration membrane), an NF membrane (nanofiltration membrane) or the like. It is purified and returned to the treated water tank 55. And if the water quality conforms to the technical standards stipulated by the Cabinet Order, it will be discharged into rivers. On the other hand, if the water quality does not meet the technical standards stipulated by the Cabinet Order, it is used as industrial water without being discharged into rivers. Moreover, the treated water obtained by purifying by membrane separation using RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and used as purified water (drinking water). .
生物活性炭槽9で浄化処理された汚排水は,処理水槽55(図8では不図示)に貯められる。処理水槽55に貯められた処理水は,第二膜分離槽10(図8では不図示)に移送され,MF膜(精密ろ過膜),NF膜(ナノろ過膜)などを用いた膜分離により浄化処理されて処理水槽55に返送される。そして,水質が政令で定める技術上の基準に適合していれば,河川等に放流される。一方,水質が政令で定める技術上の基準に適合していなければ,河川等に放流されることなく,産業用水として使用される。また,第二膜分離槽10でRO膜(逆浸透膜)を用いた膜分離により浄化処理されて得られた処理水は,精製水槽56に貯められ,精製水(飲用水)として使用される。 As shown in FIG. 7 to FIG. 9, the
The wastewater purified in the biological activated
原水集水槽2,嫌気槽3,無酸素槽4,好気槽5,生物曝気槽54,第一膜分離槽7,オゾン接触槽8,生物活性炭槽9,処理水槽55,第二膜分離槽10,および精製水槽56は,それぞれ,角筒タンクからなり,これらは縦置きにされている。
また,促進酸化槽6は,円筒タンクからなり,この円筒タンクも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。 Rawwater collection tank 2, anaerobic tank 3, anoxic tank 4, aerobic tank 5, biological aeration tank 54, first membrane separation tank 7, ozone contact tank 8, biological activated carbon tank 9, treated water tank 55, second membrane separation tank 10 and the purified water tank 56 are each composed of a rectangular tank, and these are placed vertically.
The acceleratedoxidation tank 6 is composed of a cylindrical tank, and this cylindrical tank is also placed vertically.
In addition, although it is not necessary to specifically limit about the raw material of these cylindrical tanks and square cylinder tanks, what is necessary is just to use the thing made from PVC (polyvinyl chloride) typically.
In the acceleratedoxidation tank 6, it is necessary to use a material having high resistance to radical reaction or the like, and typically, a stainless material or the like may be used.
また,促進酸化槽6は,円筒タンクからなり,この円筒タンクも縦置きにされている。
なお,これらの円筒タンクや角筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。
また,促進酸化槽6においては,ラジカル反応などに対して耐性の高い素材を用いる必要があり,典型的には,ステンレス素材などを用いればよい。 Raw
The accelerated
In addition, although it is not necessary to specifically limit about the raw material of these cylindrical tanks and square cylinder tanks, what is necessary is just to use the thing made from PVC (polyvinyl chloride) typically.
In the accelerated
これら各槽は,他のいずれか又は複数の槽に近接して配置されている。そして,嫌気槽3と無酸素槽4,無酸素槽4と好気槽5,ならびに,促進酸化槽6と生物曝気槽54は,それぞれ,底部で連通孔12,13,57を介して直接繋がっている。また,好気槽5と促進酸化槽6,生物曝気槽54と第一膜分離槽7,オゾン接触槽8と生物活性炭槽9,処理水槽55と第二膜分離槽10,ならびに,第二膜分離槽10と精製水槽56は,それぞれ,上部で連通管14,15,16等を介して連通されている。ここで,連通管14,15,16等は,各槽の底面からほぼ同じ高さの位置に設けられており,これにより,各槽における水位が同一に保持される構成となっている。
以上の構成により,重力に従った処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。 Each of these tanks is arranged close to any other or a plurality of tanks. Theanaerobic tank 3, the oxygen-free tank 4, the oxygen-free tank 4, the aerobic tank 5, and the accelerated oxidation tank 6 and the biological aeration tank 54 are directly connected to each other through the communication holes 12, 13, 57 at the bottom. ing. Also, the aerobic tank 5, the accelerated oxidation tank 6, the biological aeration tank 54 and the first membrane separation tank 7, the ozone contact tank 8 and the biological activated carbon tank 9, the treated water tank 55 and the second membrane separation tank 10, and the second membrane The separation tank 10 and the purified water tank 56 are communicated with each other via communication pipes 14, 15, 16 and the like at the upper part. Here, the communication pipes 14, 15, 16 and the like are provided at substantially the same height from the bottom surface of each tank, so that the water level in each tank is kept the same.
With the above configuration, it is possible to move the treated water according to gravity, and to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, the positional deviation between the tanks can be almost eliminated and the length of the pipe can be shortened as much as possible. With this configuration, it is possible to realize a wastewater purification system that is extremely resistant to displacement and distortion of piping.
以上の構成により,重力に従った処理水の移動が可能となり,移動のための最小限のエネルギーで自己完結式の汚排水浄化システムとして機能させることが可能になる。
また,各槽が近接して配置されていることにより,各槽間の位置のズレをほとんど無くすことができるとともに,配管の長さをできるだけ短縮することが可能となる。そして,かかる構成により,配管のズレや歪みが極めて生じにくい汚排水浄化システムを実現することが可能となる。 Each of these tanks is arranged close to any other or a plurality of tanks. The
With the above configuration, it is possible to move the treated water according to gravity, and to function as a self-contained wastewater purification system with the minimum energy for movement.
Further, since the tanks are arranged close to each other, the positional deviation between the tanks can be almost eliminated and the length of the pipe can be shortened as much as possible. With this configuration, it is possible to realize a wastewater purification system that is extremely resistant to displacement and distortion of piping.
本実施の形態の汚排水浄化システム53においては,原水集水槽2に汚排水(原水)が一定量溜まると,汚水ポンプ(不図示)が自動的に起動し,原水集水槽2内の汚排水が移送パイプ17を介して嫌気槽3へ圧送されるように構成されている。そして,嫌気槽3に汲み上げられた汚排水は,連通孔12,13,連通管14,連通孔57および連通管15を介して無酸素槽4,好気槽5,促進酸化槽6,生物曝気槽54,第一膜分離槽7の順に移動する。このように,原水集水槽2内の汚排水の水位が上がると,当該汚排水が自動的に嫌気槽3,無酸素槽4,好気槽5,促進酸化槽6,生物曝気槽54,第一膜分離槽7の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。 In the sewagedrainage purification system 53 of the present embodiment, when a certain amount of sewage (raw water) accumulates in the raw water catchment tank 2, a sewage pump (not shown) is automatically activated and the sewage drainage in the raw water catchment tank 2 is activated. Is configured to be pumped to the anaerobic tank 3 through the transfer pipe 17. The wastewater pumped up in the anaerobic tank 3 is passed through the communication holes 12 and 13, the communication pipe 14, the communication hole 57 and the communication pipe 15, and the anaerobic tank 4, the aerobic tank 5, the accelerated oxidation tank 6, and the biological aeration. It moves in order of the tank 54 and the first membrane separation tank 7. Thus, when the level of sewage in the raw water collection tank 2 rises, the sewage automatically becomes anaerobic tank 3, anoxic tank 4, aerobic tank 5, accelerated oxidation tank 6, biological aeration tank 54, Since the membrane moves in the order of the single membrane separation tank 7, no problem arises in the flow of the wastewater even if a flow rate adjusting tank is not provided separately. As a result, the wastewater purification system can be made compact.
Further, the waste water in the firstmembrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by a self-priming pump 18. Then, the wastewater pumped up in the ozone contact tank 8 moves in order of the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56 through the communication pipe 16 and the like. Thus, the wastewater in the first membrane separation tank 7 automatically moves in the order of the ozone contact tank 8, the biological activated carbon tank 9, the treated water tank 55, the second membrane separation tank 10, and the purified water tank 56. Even if there is no separate adjustment tank, there will be no problem with the flow of sewage. As a result, the wastewater purification system can be made compact.
Here, the case where the wastewater in the firstmembrane separation tank 7 is configured to be pumped up to the ozone contact tank 8 by the self-priming pump 18 has been described as an example. It is not limited. For example, a communication hole (not shown) for moving the waste water after the first membrane separation treatment to the ozone contact tank 8 according to gravity may be provided at the bottom.
また,第一膜分離槽7内の汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている。そして,オゾン接触槽8に汲み上げられた汚排水は,連通管16等を介して生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動する。このように,第一膜分離槽7内の汚排水は,自動的にオゾン接触槽8,生物活性炭槽9,処理水槽55,第二膜分離槽10,精製水槽56の順に移動するので,流量調整槽を別途設けなくても,汚排水の流れに如何なる問題も発生することはない。その結果,汚排水浄化システムのコンパクト化を図ることができる。
なお,ここでは,第一膜分離槽7内の汚排水が,自吸式ポンプ18によってオゾン接触槽8に汲み上げられるように構成されている場合を例に挙げて説明したが,必ずしもかかる構成に限定されるものではない。例えば,第一膜分離処理後の汚排水を,重力に従ってオゾン接触槽8に移動させるための連通孔(不図示)を底部に設けるようにしてもよい。 In the sewage
Further, the waste water in the first
Here, the case where the wastewater in the first
原水集水槽2は,ドラムスクリーン(不図示)を備え,汚排水発生源から供給される汚排水(原水)から夾雑固形物を除去する機能を果たす。そして,夾雑固形物が除去された後の汚排水は,嫌気槽3,無酸素槽4,好気槽5において嫌気性菌による嫌気性分解,好気性菌による好気性分解等を受けて浄化処理される。
The raw water collecting tank 2 is provided with a drum screen (not shown) and functions to remove contaminated solids from the wastewater (raw water) supplied from the wastewater generation source. Then, the wastewater after the removal of contaminated solids is purified by receiving anaerobic decomposition by anaerobic bacteria, aerobic decomposition by aerobic bacteria, etc. in anaerobic tank 3, anoxic tank 4 and aerobic tank 5. Is done.
嫌気槽3には嫌気性菌が投入されている。図8中,参照符号58は,嫌気性菌が固定される微生物担体を示している。そして,原水集水槽2から嫌気槽3に汲み上げられた汚排水は,当該嫌気槽3内において,嫌気性菌による嫌気性分解(還元反応)を受けて浄化処理される。
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。 Anaerobic bacteria are introduced into theanaerobic tank 3. In FIG. 8, reference numeral 58 indicates a microorganism carrier on which anaerobic bacteria are fixed. Then, the wastewater pumped up from the raw water collecting tank 2 to the anaerobic tank 3 is subjected to purification treatment in the anaerobic tank 3 by receiving anaerobic decomposition (reduction reaction) by anaerobic bacteria.
Moreover, in theanaerobic tank 3, the submersible pump 19 started intermittently is installed. The submersible pump 19 is connected to one end of a first transfer pipe 21 having the other end connected to the inlet of the solid-liquid separator 20, and the outlet of the solid-liquid separator 20 has no other end. One end of the second transfer pipe 22 located in the oxygen tank 4 is connected. Thereby, the fine solid contained in the waste water pumped up in the anaerobic tank 3 can be discharged and removed from the discharge port of the solid-liquid separator 20.
また,嫌気槽3内には,断続的に起動する水中ポンプ19が設置されている。そして,当該水中ポンプ19には,他端が固液分離機20の流入口に接続された第一移送管21の一端が接続され,固液分離機20の流出口には,他端が無酸素槽4内に位置する第二移送管22の一端が接続されている。これにより,嫌気槽3に汲み上げられた汚排水に含まれている微細固形物を,固液分離機20の吐出口から吐出して除去できるようにされている。 Anaerobic bacteria are introduced into the
Moreover, in the
嫌気槽3で浄化処理された汚排水は,固液分離機20および連通孔12を介して無酸素槽4に移動される。
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4内に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌も返送され,嫌気槽3で浄化処理された汚排水と脱窒菌とが無酸素状態で接触する。そして,嫌気槽3で浄化処理された汚排水は無酸素槽で増殖されている脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号59は,硝化菌が固定される微生物担体を示している。また,参照符号60は,無酸素槽4中の活性汚泥濃度を均一化するために無酸素槽4内を撹拌する下向式撹拌ポンプを示している。 The wastewater discharged in theanaerobic tank 3 is moved to the anaerobic tank 4 through the solid-liquid separator 20 and the communication hole 12.
A self-primingpump 24 is installed in the upper part of the anaerobic tank 4. The other end of the first return pipe 25 is connected to the inlet of the self-priming pump 24 and the other end is located in the aerobic tank 5 at the rear stage. Is connected to one end of a second return pipe 26 located in the oxygen-free tank 4. As a result, the nitrifying bacteria grown in the aerobic tank 5 are also returned to the anaerobic tank 4, and the wastewater purified in the anaerobic tank 3 and the denitrifying bacteria come into contact with each other in an oxygen-free state. The wastewater purified in the anaerobic tank 3 is denitrified by the denitrifying bacteria grown in the anaerobic tank using the organic component in the wastewater as a hydrogen donor, so that nitrate nitrogen in the wastewater is removed. It is changed to nitrogen gas and removed.
In FIG. 2,reference numeral 59 indicates a microorganism carrier to which nitrifying bacteria are fixed. Reference numeral 60 denotes a downward stirring pump that stirs the oxygen-free tank 4 in order to make the activated sludge concentration in the oxygen-free tank 4 uniform.
無酸素槽4の上部には,自吸式ポンプ24が設置されている。そして,自吸式ポンプ24の流入口には,他端が後段の好気槽5内に位置する第一返送管25の一端が接続され,自吸式ポンプ24の流出口には,他端が無酸素槽4内に位置する第二返送管26の一端が接続されている。これにより,無酸素槽4には,好気槽5で増殖された硝化菌も返送され,嫌気槽3で浄化処理された汚排水と脱窒菌とが無酸素状態で接触する。そして,嫌気槽3で浄化処理された汚排水は無酸素槽で増殖されている脱窒菌が汚排水中の有機物成分を水素供与体として脱窒を行うことにより,汚排水中の硝酸態窒素が窒素ガスに変化して除去される。
図2中,参照符号59は,硝化菌が固定される微生物担体を示している。また,参照符号60は,無酸素槽4中の活性汚泥濃度を均一化するために無酸素槽4内を撹拌する下向式撹拌ポンプを示している。 The wastewater discharged in the
A self-priming
In FIG. 2,
無酸素槽4で浄化処理された汚排水は,連通孔13を介して好気槽5に移動される。この好気槽5には,好気性菌である硝化菌が投入されている。そして,無酸素槽4で浄化処理された汚排水は,好気槽5内で曝気処理され,好気槽5に投入培養された好気性菌による有機物の酸化分解が行われるとともに,アンモニアはアンモニア酸化菌と亜硝酸酸化菌によって硝酸,亜硝酸になる硝化反応が行われる。
図2中,参照符号61は,硝化菌が固定される微生物担体を示している。
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,無酸素槽4,好気槽5においては,遠赤外線ランプにより,微生物の活性化と保温断熱効果が高められるように工夫されている。 The dirty wastewater purified in theanaerobic tank 4 is moved to the aerobic tank 5 through the communication hole 13. The aerobic tank 5 is charged with nitrifying bacteria which are aerobic bacteria. The wastewater purified in the anaerobic tank 4 is aerated in the aerobic tank 5 and oxidative decomposition of organic substances is performed by aerobic bacteria introduced and cultured in the aerobic tank 5, and ammonia is converted into ammonia. Nitrification and nitric acid are performed by oxidizing bacteria and nitrite oxidizing bacteria.
In FIG. 2,reference numeral 61 indicates a microorganism carrier to which nitrifying bacteria are fixed.
A self-primingpump 28 is installed above the oxygen-free tank 4. One end of a third return pipe 29 whose other end is located in the aerobic tank 5 is connected to the inlet of the self-priming pump 28, and the other end is anaerobic to the outlet of the self-priming pump 28. One end of a fourth return pipe 30 located just above the water surface of the tank 3 is connected. Thereby, since a series of purification processes in the anaerobic tank 3, the anoxic tank 4, and the aerobic tank 5 can be repeatedly performed, it is possible to improve the quality of the purification process.
Theaerobic tank 5 includes an upstream aerobic tank 5a and a downstream aerobic tank 5b. The anaerobic tank 4 and the upstream aerobic tank 5a are directly connected to each other through the communication hole 13 at the bottom. The other end of the first return pipe 25 is located in the upstream aerobic tank 5a. The other end of the third return pipe 29 is located in the downstream aerobic tank 5b.
Further, in theanaerobic tank 4 and the aerobic tank 5, the far-infrared lamp is devised so that the activation of microorganisms and the heat insulation and heat insulation effect can be enhanced.
図2中,参照符号61は,硝化菌が固定される微生物担体を示している。
無酸素槽4の上方には,自吸式ポンプ28が設置されている。そして,自吸式ポンプ28の流入口には,他端が好気槽5内に位置する第三返送管29の一端が接続され,自吸式ポンプ28の流出口には,他端が嫌気槽3の水面の真上に位置する第四返送管30の一端が接続されている。これにより,嫌気槽3,無酸素槽4,好気槽5での一連の浄化処理を繰り返し行うことができるので,浄化処理の品質を高めることが可能となる。
なお,好気槽5は,上流側の好気槽5aと,下流側の好気槽5bと,からなっている。そして,無酸素槽4と上流側の好気槽5aとが,底部で連通孔13を介して直接繋がっている。また,第一返送管25の他端は,上流側の好気槽5a内に位置している。また,第三返送管29の他端は,下流側の好気槽5b内に位置している。
また,無酸素槽4,好気槽5においては,遠赤外線ランプにより,微生物の活性化と保温断熱効果が高められるように工夫されている。 The dirty wastewater purified in the
In FIG. 2,
A self-priming
The
Further, in the
好気槽5で浄化処理された汚排水は,連通管14を介して促進酸化槽6に移動される。そして,好気槽5で浄化処理された汚排水は,促進酸化槽6内で酸化分解により浄化処理される。
図8から図10に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。 The wastewater that has been purified in theaerobic tank 5 is moved to the accelerated oxidation tank 6 through the communication pipe 14. The sewage wastewater purified in the aerobic tank 5 is purified in the accelerated oxidation tank 6 by oxidative decomposition.
As shown in FIGS. 8 to 10, ascum pump 31 is suspended in the accelerated oxidation tank 6, and the other end of the scum pump 31 has a fifth return pipe 32 positioned directly above the water surface of the anaerobic tank 3. One end is connected. As a result, the fine solids flowing into and generated in the accelerated oxidation tank 6 are returned to the anaerobic tank 3 and can be discharged and removed from the discharge port of the solid-liquid separator 20.
図8から図10に示すように,促進酸化槽6には,スカムポンプ31が浮設され,当該スカムポンプ31には,他端が嫌気槽3の水面の真上に位置する第五返送管32の一端が接続されている。これにより,促進酸化槽6内に流入・発生した微細固形物を,嫌気槽3に返送し,固液分離機20の吐出口から吐出して除去できるようにされている。 The wastewater that has been purified in the
As shown in FIGS. 8 to 10, a
図8から図11(a)に示すように,本実施の形態の汚排水浄化システム53は,インライン促進酸化装置(マイクロバブル発生器)62を備えており,促進酸化槽6内においてマイクロバブルを発生させることができるようにされている。そして,かかる構成によれば,促進酸化槽6内に流入・発生した微細固形物を浮遊させ,スカムポンプ31によって嫌気槽3に返送しやすくなるので,システムからの微細固形物の除去を促進させることができる。
As shown in FIG. 8 to FIG. 11A, the wastewater purification system 53 of this embodiment includes an in-line accelerated oxidation device (microbubble generator) 62, and microbubbles are generated in the accelerated oxidation tank 6. It can be generated. And according to this structure, since the fine solid substance which flowed in and generate | occur | produced in the acceleration | stimulation oxidation tank 6 is floated and it becomes easy to return to the anaerobic tank 3 by the scum pump 31, it promotes the removal of the fine solid substance from a system. Can do.
より具体的には,インライン促進酸化装置(マイクロバブル発生器)62は,促進酸化装置本体63と,促進酸化槽6内に設置され,揚水管64を介して促進酸化装置本体63の一端に接続された水中ポンプ65と,促進酸化装置本体63の他端に接続された放出管66と,を備えている。
促進酸化装置本体63は,揚水管64に接続されたインジェックト型ナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,気液混合管68と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン(O3)ガス,過酸化水素水(H2O2)を単独もしくは組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。なお,インライン促進酸化装置(マイクロバブル発生器)62の水中ポンプ65は,電気分解槽33の底部に設置されており,放出管66は,電気分解槽33の外側に配置されている。また,図8,図10中,参照符号70は,槽内に有機酸であるフミン酸(humic acid)を溶出させる腐植土を示している。
なお,促進酸化槽6内の円筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。 More specifically, the in-line promoted oxidizer (microbubble generator) 62 is installed in the promoted oxidizermain body 63 and the promoted oxidizer tank 6 and connected to one end of the promoted oxidizer main body 63 via the pumping pipe 64. A submersible pump 65 and a discharge pipe 66 connected to the other end of the main body 63 of the oxidizer.
The promoted oxidizermain body 63 includes an injected nano-micro bubble generating nozzle 67 connected to the pumping pipe 64, and a gas-liquid mixing tube 68 disposed in this order between the nano-micro bubble generating nozzle 67 and the discharge pipe 66. , A cylindrical ultrasonic jet vibrator 69, and ozone (O 3 ) gas and hydrogen peroxide water (H 2 O 2 ) can be sent alone or in combination to the nano-microbubble generating nozzle 67 portion. Has been.
In the acceleratedoxidation tank 6, an electrolysis tank 33 comprising a cylindrical tank is concentrically arranged. On the inner peripheral surface of the electrolysis tank 33, TiO2 anode and cathode plates 46a and 46b are arranged. The accelerated oxidation tank 6 and the electrolysis tank 33 are directly connected via a communication hole 47 at the bottom. The submersible pump 65 of the in-line accelerated oxidation apparatus (microbubble generator) 62 is installed at the bottom of the electrolysis tank 33, and the discharge pipe 66 is arranged outside the electrolysis tank 33. 8 and 10, reference numeral 70 indicates humus soil that elutes humic acid, which is an organic acid, in the tank.
The material of the cylindrical tank in the acceleratedoxidation tank 6 is not particularly limited, but typically, a material made of PVC (polyvinyl chloride) may be used.
促進酸化装置本体63は,揚水管64に接続されたインジェックト型ナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,気液混合管68と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン(O3)ガス,過酸化水素水(H2O2)を単独もしくは組み合わせて送り込むことができるようにされている。
促進酸化槽6内には,円筒タンクからなる電気分解槽33が同心状に配置されており,電気分解槽33の内周面には,TiO2陽陰極板46a,46bが配置されている。そして,促進酸化槽6と電気分解槽33は,底部で連通孔47を介して直接繋がっている。なお,インライン促進酸化装置(マイクロバブル発生器)62の水中ポンプ65は,電気分解槽33の底部に設置されており,放出管66は,電気分解槽33の外側に配置されている。また,図8,図10中,参照符号70は,槽内に有機酸であるフミン酸(humic acid)を溶出させる腐植土を示している。
なお,促進酸化槽6内の円筒タンクの素材については特に限定する必要はないが,典型的には,PVC(ポリ塩化ビニル)製のものを用いればよい。 More specifically, the in-line promoted oxidizer (microbubble generator) 62 is installed in the promoted oxidizer
The promoted oxidizer
In the accelerated
The material of the cylindrical tank in the accelerated
以上の構成を備えた促進酸化槽6により,意図的にヒドロキシルラジカルを発生させ,酸化力を向上・促進させることが可能となる。すなわち,オゾンや過酸化水素,さらには紫外線(UV)などを組み合わせて用いることにより,強力な酸化剤であるOHラジカルを発生させ,水中の難分解性汚染物質を分解・除去することが可能となる。特に,ダイオキシン類や環境ホルモン,農薬などの微料汚染物質の分解・除去に優れた効果を発揮することが期待できる。また,オゾンや過酸化水素,紫外線(UV),超音波,ナノマイクロバブルなどを使用するため,分解後の主たる生成物は,酸素や水であるため,二次廃棄物がほとんど発生しないという効果が得られる。さらに,オゾンを用いるなどにより,汚排水における脱色や脱臭,COD低減,殺菌などの効果も同時にもたらすことが可能となる。
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。 With the acceleratedoxidation tank 6 having the above-described configuration, it is possible to intentionally generate hydroxyl radicals and improve / promote the oxidizing power. In other words, by combining ozone, hydrogen peroxide, and even ultraviolet rays (UV), it is possible to generate OH radicals, which are powerful oxidants, and to decompose and remove persistent degradable pollutants in water. Become. In particular, it can be expected to exhibit excellent effects in the decomposition and removal of fine pollutants such as dioxins, environmental hormones, and agricultural chemicals. In addition, since ozone, hydrogen peroxide, ultraviolet (UV), ultrasonic waves, nano-micro bubbles, etc. are used, the main products after decomposition are oxygen and water, so that secondary waste is hardly generated. Is obtained. Furthermore, by using ozone, it is possible to bring about effects such as decolorization, deodorization, COD reduction, and sterilization in wastewater.
Further, in the oxidative decomposition in the acceleratedoxidation tank 6, as described above, by further combining electrolysis, the oxidative decomposition in the accelerated oxidation tank 6 can be performed more efficiently.
また,促進酸化槽6における酸化分解において,上記のように,さらに電気分解を組み合わせることにより,促進酸化槽6における酸化分解をさらに効率良く行うことが可能となる。 With the accelerated
Further, in the oxidative decomposition in the accelerated
さらに,図11,図12,図13に示すように,同心円筒状の促進酸化槽6および電気分解槽33とインライン促進酸化装置62との組合せによれば,ナノマイクロバブル発生ノズル67と気液混合管68と円筒型超音波噴射振動子69とによって生成される螺旋流が旋回流となり,反応を促進することとなる。すなわち,円筒状の電気分解槽33およびインライン促進酸化装置62を備えた本実施の形態の促進酸化槽(旋回流(渦流)式促進酸化槽)6の構成によれば,従来型促進酸化槽に比べて効率的に撹拌できるため,(1)有機物との反応効率が良い,(2)反応速度が速い,(3)反応死角が無い,(4)必要オゾン量が少なくて済む,(5)ランニングコストが低い,などの効果が得られる。
この場合,ナノマイクロバブル(微細気泡)は,旋回流によって10から50μm径の気泡となり,1から10mm程度のミリバブルに比べて溶解率が高くなる。すなわち,円筒状の電気分解槽33およびインライン促進酸化装置62を備えた本実施の形態の促進酸化槽(旋回流(渦流)式促進酸化槽)6の構成によれば,オゾンガスを溶解させるための加圧溶解タンクを用いることなく溶解率を高めることができる。 Furthermore, as shown in FIGS. 11, 12, and 13, according to the combination of the concentric cylindricalaccelerated oxidation tank 6, the electrolysis tank 33 and the inline accelerated oxidation apparatus 62, the nano-microbubble generating nozzle 67 and the gas-liquid are combined. The spiral flow generated by the mixing tube 68 and the cylindrical ultrasonic jet vibrator 69 becomes a swirl flow and promotes the reaction. That is, according to the configuration of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of this embodiment provided with the cylindrical electrolysis tank 33 and the in-line accelerated oxidation apparatus 62, the conventional accelerated oxidation tank is used. Since it can be stirred more efficiently, (1) the reaction efficiency with organic substances is good, (2) the reaction speed is fast, (3) there is no reaction blind spot, (4) the amount of required ozone is small, (5) Effects such as low running costs can be obtained.
In this case, the nano-micro bubbles (fine bubbles) become bubbles having a diameter of 10 to 50 μm due to the swirling flow, and the dissolution rate is higher than that of the milli-bubbles of about 1 to 10 mm. That is, according to the structure of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of this embodiment provided with thecylindrical electrolysis tank 33 and the in-line accelerated oxidation apparatus 62, the ozone gas is dissolved. The dissolution rate can be increased without using a pressurized dissolution tank.
この場合,ナノマイクロバブル(微細気泡)は,旋回流によって10から50μm径の気泡となり,1から10mm程度のミリバブルに比べて溶解率が高くなる。すなわち,円筒状の電気分解槽33およびインライン促進酸化装置62を備えた本実施の形態の促進酸化槽(旋回流(渦流)式促進酸化槽)6の構成によれば,オゾンガスを溶解させるための加圧溶解タンクを用いることなく溶解率を高めることができる。 Furthermore, as shown in FIGS. 11, 12, and 13, according to the combination of the concentric cylindrical
In this case, the nano-micro bubbles (fine bubbles) become bubbles having a diameter of 10 to 50 μm due to the swirling flow, and the dissolution rate is higher than that of the milli-bubbles of about 1 to 10 mm. That is, according to the structure of the accelerated oxidation tank (swirl flow (vortex) type accelerated oxidation tank) 6 of this embodiment provided with the
図7から図9に示すように,促進酸化槽6で浄化処理された汚排水は,連通孔57を介して生物曝気槽54に移動される。そして,促進酸化槽6で浄化処理された汚排水は,生物曝気槽54内で生物処理により浄化処理される。図8中,参照符号71は,生物処理に用いられる微生物が固定される微生物担体を示している。
As shown in FIGS. 7 to 9, the wastewater purified in the accelerated oxidation tank 6 is moved to the biological aeration tank 54 through the communication hole 57. Then, the wastewater purified in the accelerated oxidation tank 6 is purified in the biological aeration tank 54 by biological treatment. In FIG. 8, reference numeral 71 indicates a microorganism carrier to which microorganisms used for biological treatment are fixed.
生物曝気槽54で浄化処理された汚排水は,連通管15を介して第一膜分離槽7に移動される。そして,生物曝気槽54で浄化処理された汚排水は,第一膜分離槽7内で膜分離により浄化処理される。
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図8中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。 The wastewater purified in thebiological aeration tank 54 is moved to the first membrane separation tank 7 through the communication pipe 15. Then, the wastewater purified in the biological aeration tank 54 is purified in the first membrane separation tank 7 by membrane separation.
The firstmembrane separation tank 7 has a property of so-called rough separation as compared with a second membrane separation tank 10 described later, and a UF membrane (ultrafiltration membrane) 49 is used as a membrane. It has been.
In FIG. 8,reference numeral 50 indicates an air diffuser, and the air diffuser 50 performs the function of supplying the oxygen to the activated sludge and cleaning the membrane surface by the upward flow of bubbles.
第一膜分離槽7は,後述する第二膜分離槽10と比較すると,いわゆる粗分離としての性質を有するものであり,膜(メンブレイン)としてはUF膜(限外ろ過膜)49が用いられている。
図8中,参照符号50は散気管を示しており,当該散気管50は,活性汚泥への酸素供給と気泡の上昇流による膜面洗浄の機能を果たす。 The wastewater purified in the
The first
In FIG. 8,
第一膜分離槽7で浄化処理された汚排水は,自吸式ポンプ18によってオゾン接触槽8に汲み上げられる。そして,第一膜分離槽7で浄化処理された汚排水は,オゾン接触槽8内でオゾンにより浄化処理される。
図8中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。また,参照符号72は,光触媒であるTiO2ボールを示しており,当該TiO2ボールに紫外線を照射するだけで殺菌処理が可能となる。 The wastewater purified in the firstmembrane separation tank 7 is pumped up to the ozone contact tank 8 by the self-priming pump 18. Then, the wastewater purified in the first membrane separation tank 7 is purified by ozone in the ozone contact tank 8.
In FIG. 8, reference numeral 51 indicates a submersible pump nano-bubble injection. Nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the firstmembrane separation tank 7. The sewage wastewater that has been subjected to purification treatment can be further purified. Reference numeral 72 indicates a TiO 2 ball as a photocatalyst, and sterilization can be performed only by irradiating the TiO 2 ball with ultraviolet rays.
図8中,参照符号51は水中ポンプ式のナノマイクロバブルインジェックトを示しており,当該ナノマイクロバブルインジェックト51により,オゾンを含むナノマイクロバブルを発生させて,第一膜分離槽7で浄化処理された汚排水をさらに浄化処理することができるようにされている。また,参照符号72は,光触媒であるTiO2ボールを示しており,当該TiO2ボールに紫外線を照射するだけで殺菌処理が可能となる。 The wastewater purified in the first
In FIG. 8, reference numeral 51 indicates a submersible pump nano-bubble injection. Nano-bubbles containing ozone are generated by the nano-micro bubble injection 51, and the first
オゾン接触槽8で浄化処理された汚排水は,連通管16を介して生物活性炭槽9に移動される。そして,オゾン接触槽8で浄化処理された汚排水は,生物活性炭槽9内で生物活性炭52により浄化処理される。
The wastewater purified in the ozone contact tank 8 is moved to the biological activated carbon tank 9 through the communication pipe 16. Then, the wastewater purified by the ozone contact tank 8 is purified by the biological activated carbon 52 in the biological activated carbon tank 9.
次いで,上記したように,生物活性炭槽9で浄化処理された汚排水は,処理水槽55に貯められる。処理水槽55に貯められた処理水は,第二膜分離槽10に移送され,MF膜(精密ろ過膜),NF膜(ナノろ過膜)などを用いた膜分離により浄化処理されて処理水槽55に返送される。そして,水質が政令で定める技術上の基準に適合していれば,河川等に放流される。一方,水質が政令で定める技術上の基準に適合していなければ,河川等に放流されることなく,産業用水として使用される。また,第二膜分離槽10でRO膜(逆浸透膜)を用いた膜分離により浄化処理されて得られた処理水は,精製水槽56に貯められ,精製水(飲用水)として使用される。
Next, as described above, the wastewater purified by the biological activated carbon tank 9 is stored in the treated water tank 55. The treated water stored in the treated water tank 55 is transferred to the second membrane separation tank 10 and purified by membrane separation using an MF membrane (microfiltration membrane), NF membrane (nanofiltration membrane), etc. Will be returned. And if the water quality conforms to the technical standards stipulated by the Cabinet Order, it will be discharged into rivers. On the other hand, if the water quality does not meet the technical standards stipulated by the Cabinet Order, it is used as industrial water without being discharged into rivers. Moreover, the treated water obtained by purifying by membrane separation using RO membrane (reverse osmosis membrane) in the second membrane separation tank 10 is stored in the purified water tank 56 and used as purified water (drinking water). .
本実施の形態の汚排水浄化システム53も,例えば,トイレ室の汚水槽(汚排水発生源)から供給される汚排水の浄化処理に適用することができる。
The wastewater purification system 53 of the present embodiment can also be applied to the purification treatment of wastewater supplied from a wastewater tank (sewage generation source) in a toilet room, for example.
なお,本実施の形態においては,オゾンガスと過酸化水素水混合注入型のインライン促進酸化装置を用いる場合を例に挙げて説明したが,必ずしもかかる構成の促進酸化装置に限定されるものではない。例えば,図11(b)に示すようなオゾン水と過酸化水素水分離注入型のインライン促進酸化装置73を用いてもよい。
より具体的には,インライン促進酸化装置73は,促進酸化装置本体74と,促進酸化槽6内に設置され,揚水管64を介して促進酸化装置本体74の一端に接続された水中ポンプ65と,促進酸化装置本体74の他端に接続された放出管66と,を備えている。
促進酸化装置本体74は,揚水管64に接続されたナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,インジェックター75と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン水を,インジェックター75部分に過酸化水素水をそれぞれ送り込むことができるようにされている。 In this embodiment, the case of using an in-line accelerated oxidizer mixed with ozone gas and hydrogen peroxide solution has been described as an example. However, the present invention is not necessarily limited to such an accelerated oxidizer. For example, an in-line acceleratedoxidizer 73 of the ozone water and hydrogen peroxide solution separation / injection type as shown in FIG. 11B may be used.
More specifically, the in-line promotedoxidizer 73 includes a promoted oxidizer main body 74, a submersible pump 65 installed in the promoted oxidizer tank 6 and connected to one end of the promoted oxidizer main body 74 via a pumping pipe 64. , And a release pipe 66 connected to the other end of the promoted oxidizer main body 74.
The promoted oxidizermain body 74 is composed of a nano-micro bubble generating nozzle 67 connected to the pumping pipe 64, an injector 75, a cylindrical type, which are arranged in order between the nano-micro bubble generating nozzle 67 and the discharge pipe 66. And an ultrasonic jet vibrator 69 so that ozone water can be fed into the nano-micro bubble generating nozzle 67 and hydrogen peroxide can be fed into the injector 75, respectively.
より具体的には,インライン促進酸化装置73は,促進酸化装置本体74と,促進酸化槽6内に設置され,揚水管64を介して促進酸化装置本体74の一端に接続された水中ポンプ65と,促進酸化装置本体74の他端に接続された放出管66と,を備えている。
促進酸化装置本体74は,揚水管64に接続されたナノマイクロバブル発生ノズル67と,当該ナノマイクロバブル発生ノズル67と放出管66との間に順に配置された,インジェックター75と,円筒型超音波噴射振動子69と,を備えており,ナノマイクロバブル発生ノズル67部分にオゾン水を,インジェックター75部分に過酸化水素水をそれぞれ送り込むことができるようにされている。 In this embodiment, the case of using an in-line accelerated oxidizer mixed with ozone gas and hydrogen peroxide solution has been described as an example. However, the present invention is not necessarily limited to such an accelerated oxidizer. For example, an in-line accelerated
More specifically, the in-line promoted
The promoted oxidizer
上記のとおり,本発明について説明を行ってきたが,本発明の有用性について,補足して説明を行う。
昨今,有機物処理について,下記が技術的課題として重要となっている。
(1) 高分子凝集剤など化学薬品を排除し,産業廃棄物の処理量を低減すること。
(2) 世界的な水資源不足問題を解消するために,汚排水の放流処理はもちろんのこと,産業用水として再使用が可能な程度にまで分解・精製処理が可能であること。
(3) コンパクトで経済的であること。
(4) 畜産糞尿処理の脱色や微量化学物質,病原性微生物の除去などの難分解性物質の浄化処理が可能であること。 As described above, the present invention has been described, but the usefulness of the present invention will be supplementarily described.
In recent years, the following are important technical issues regarding organic matter treatment.
(1) To eliminate chemicals such as polymer flocculants and reduce the amount of industrial waste processed.
(2) In order to solve the global water resource shortage problem, not only the wastewater drainage treatment but also the decomposition and purification treatment to the extent that it can be reused as industrial water.
(3) It must be compact and economical.
(4) It should be possible to purify refractory substances such as decolorization of livestock manure treatment and removal of trace chemical substances and pathogenic microorganisms.
昨今,有機物処理について,下記が技術的課題として重要となっている。
(1) 高分子凝集剤など化学薬品を排除し,産業廃棄物の処理量を低減すること。
(2) 世界的な水資源不足問題を解消するために,汚排水の放流処理はもちろんのこと,産業用水として再使用が可能な程度にまで分解・精製処理が可能であること。
(3) コンパクトで経済的であること。
(4) 畜産糞尿処理の脱色や微量化学物質,病原性微生物の除去などの難分解性物質の浄化処理が可能であること。 As described above, the present invention has been described, but the usefulness of the present invention will be supplementarily described.
In recent years, the following are important technical issues regarding organic matter treatment.
(1) To eliminate chemicals such as polymer flocculants and reduce the amount of industrial waste processed.
(2) In order to solve the global water resource shortage problem, not only the wastewater drainage treatment but also the decomposition and purification treatment to the extent that it can be reused as industrial water.
(3) It must be compact and economical.
(4) It should be possible to purify refractory substances such as decolorization of livestock manure treatment and removal of trace chemical substances and pathogenic microorganisms.
汚染水処理については,従来,微生物処理方式が採用されてきた。すなわち,微生物処理方式は,汚排水処理コストが比較的安価である点で有用である。しかしながら微生物処理方式は,設備が膨大なものとなりがちであり,難分解性物質の分解ができず万全な処理方法ではないという課題がある。そのため,微生物処理方式において,微生物処理だけでは処理できない難分解性物質を,生物分解処理しやすい易分解性物質へ分解するためには,生物処理方式と組み合わせが可能な新たな処理方法の開発が必要である。
For the treatment of contaminated water, a microorganism treatment method has been conventionally employed. That is, the microbial treatment method is useful in that the wastewater treatment cost is relatively low. However, the microbial treatment method tends to have an enormous amount of equipment, and there is a problem that it is not a thorough treatment method because it cannot decompose difficult-to-decompose substances. Therefore, the development of new treatment methods that can be combined with biological treatment methods is necessary in order to decompose difficult-to-decompose substances that cannot be treated by microbial treatment alone into easily degradable materials that are easy to biodegrade. is necessary.
オゾン処理法は,オゾンの強い酸化力により処理対象物を酸化分解することから,生物処理と併用できる方法のひとつである。
特にオゾン処理法は,処理に伴って汚泥などの二次廃棄物が生じないことや反応後オゾンが無害な酸素になることから,溶存酸素が必要な微生物処理方式には極めて有用な処理技術である。
しかしながら,オゾンを単独で用いるオゾン処理法では,処理水中の亜硝酸態窒素や有機性物質などの還元性物質がオゾンと反応し消失してしまう一方,オゾンと反応性が低い物質もあり,分解が困難な物質がある点で課題を有するものである。 The ozone treatment method is one of the methods that can be used in combination with biological treatment because the object to be treated is oxidatively decomposed by the strong oxidizing power of ozone.
In particular, the ozone treatment method is a very useful treatment technique for microbial treatment methods that require dissolved oxygen because secondary waste such as sludge does not occur during the treatment and ozone becomes harmless oxygen after the reaction. is there.
However, in the ozone treatment method that uses ozone alone, reducing substances such as nitrite nitrogen and organic substances in the treated water react with ozone and disappear, while there are substances that are less reactive with ozone and decompose. However, there is a problem in that there are substances that are difficult to handle.
特にオゾン処理法は,処理に伴って汚泥などの二次廃棄物が生じないことや反応後オゾンが無害な酸素になることから,溶存酸素が必要な微生物処理方式には極めて有用な処理技術である。
しかしながら,オゾンを単独で用いるオゾン処理法では,処理水中の亜硝酸態窒素や有機性物質などの還元性物質がオゾンと反応し消失してしまう一方,オゾンと反応性が低い物質もあり,分解が困難な物質がある点で課題を有するものである。 The ozone treatment method is one of the methods that can be used in combination with biological treatment because the object to be treated is oxidatively decomposed by the strong oxidizing power of ozone.
In particular, the ozone treatment method is a very useful treatment technique for microbial treatment methods that require dissolved oxygen because secondary waste such as sludge does not occur during the treatment and ozone becomes harmless oxygen after the reaction. is there.
However, in the ozone treatment method that uses ozone alone, reducing substances such as nitrite nitrogen and organic substances in the treated water react with ozone and disappear, while there are substances that are less reactive with ozone and decompose. However, there is a problem in that there are substances that are difficult to handle.
一方,ヒドロキシルラジカルは,オゾンと比較すると,分解できる物質の幅が広く分解力も高いことから,このヒドロキシラジカルを利用したいわゆる促進酸化法(AOP)が開発されている。
しかるに,促進酸化法(AOP)の根幹であるヒドロキシルラジカルを安定的に発生させるために様々な方法が試されているが,これは至っていない状況であり,今も研究が進んでいる状況である。 On the other hand, since hydroxyl radicals have a wider range of decomposable substances and higher decomposability than ozone, so-called accelerated oxidation method (AOP) using hydroxy radicals has been developed.
However, various methods have been tried to stably generate hydroxyl radicals that are the basis of the accelerated oxidation method (AOP), but this has not been achieved, and research is still ongoing. .
しかるに,促進酸化法(AOP)の根幹であるヒドロキシルラジカルを安定的に発生させるために様々な方法が試されているが,これは至っていない状況であり,今も研究が進んでいる状況である。 On the other hand, since hydroxyl radicals have a wider range of decomposable substances and higher decomposability than ozone, so-called accelerated oxidation method (AOP) using hydroxy radicals has been developed.
However, various methods have been tried to stably generate hydroxyl radicals that are the basis of the accelerated oxidation method (AOP), but this has not been achieved, and research is still ongoing. .
本発明は,上述した有機物処理における技術的課題を克服するとともに,ヒドロキシルラジカルの安定的発生とこれの利用に必要な装置を開発し,実用化するものである。
The present invention overcomes the technical problems in the organic matter treatment described above, and develops and puts to practical use the equipment necessary for the stable generation and utilization of hydroxyl radicals.
本発明の実施態様2は,A2O2式の分解方式を提供しうるものである。以下,A2O2方式について,説明を行う。
Embodiment 2 of the present invention can provide an A2O2 type decomposition method. The A2O2 method is described below.
1.嫌気槽(A)+無酸素槽(A)+好気槽(O)+(促進酸化槽)+生物曝気槽(O)
A2O2方式は,A2O方式の生物処理法から促進酸化処理後,改めて生物曝気槽を設ける処理方式である。固液分離装置前段に嫌気槽を位置させることで浮上スラッチ,リンを過剰摂取したPAO菌を原水嫌気槽に返送処理する。また,促進酸化槽の前段階で無酸素槽を設け,生物学的窒素とリン除去を行い,窒素除去に必要な炭素源として有機物を利用することで,メタノールの注入を省略することができる。さらに,促進酸化槽を設けて生物処理方式とを組合せることにより,下記の利点ないし技術的特徴を有する。
(1) 活性汚泥法など,従来の生物処理には曝気後沈澱及び脱水処理が必要であったが,促進酸化槽におけるナノマイクロバブルによるスラッチの浮上処理で,沈澱及び脱水処理が不要になる。
(2) 促進酸化槽の過酸化水素を生物処理するとともに,オゾンと過酸化水素は最終的には酸素になり処理水中において高い酸素濃度を維持できるため,これを生物処理(好気性菌による処理)に利用可能である。
(3) オゾン+高分子有機酸触媒剤という,新しい方法のヒドロキシルラジカル生成法を提供するものである。すなわち,促進酸化槽内に腐植土を吊るすことでフミン酸(Humic Acid)やフルボ酸(Fulvic Acid)を放出する。もしくは,液状フミン酸(Humic Acid)フルボ酸(Fulvic Acid)を直接供給する,これらにより,ヒドロキシルラジカル生成の触媒作用を行う。
(4) 促進酸化槽でナノマイクロバブルを利用してスラッチを浮上させ,スカムポンプでの分離処理が出来ることから,沈殿槽と脱水工程が要らない。
(5) 促進酸化槽に最適化された,一体型インライン促進酸化装置の開発。
(6) インジェクターとの一体型の気液注入方法の開発。
(7) 促進酸化槽の構造上の特徴として円筒型とし,旋回流を造る。
(8) ナノマイクロバブル発生ノズルにより効率的溶解が出来るので,従来のオゾン溶存率を高める為の高圧タンクが要らない。 1. Anaerobic tank (A) + Oxygen-free tank (A) + Aerobic tank (O) + (Accelerated oxidation tank) + Biological aeration tank (O)
The A2O2 method is a treatment method in which a biological aeration tank is newly provided after accelerated oxidation treatment from the biological treatment method of the A2O method. By placing an anaerobic tank in front of the solid-liquid separator, the PAO bacteria that have excessive intake of floating slats and phosphorus are returned to the raw water anaerobic tank. In addition, an oxygen-free tank is provided in the previous stage of the accelerated oxidation tank, biological nitrogen and phosphorus are removed, and organic matter is used as a carbon source necessary for nitrogen removal, so that the injection of methanol can be omitted. Furthermore, by providing an accelerated oxidation tank and combining it with a biological treatment system, it has the following advantages and technical features.
(1) Conventional biological treatments such as the activated sludge method require post-aeration precipitation and dehydration, but the slats are floated by nano-microbubbles in the accelerated oxidation tank, so that precipitation and dehydration are no longer necessary.
(2) Biological treatment of hydrogen peroxide in the accelerated oxidation tank, and ozone and hydrogen peroxide will eventually become oxygen and maintain a high oxygen concentration in the treated water. ) Is available.
(3) It provides a new method for generating hydroxyl radicals, ozone + polymer organic acid catalyst. In other words, humic acid and fulvic acid are released by suspending humus in the accelerated oxidation tank. Alternatively, liquid humic acid (Fumvic Acid) and fulvic acid (Fulvic Acid) are supplied directly, thereby catalyzing hydroxyl radical generation.
(4) Since the slats are floated using nano-micro bubbles in the accelerated oxidation tank and can be separated with a scum pump, no precipitation tank and dehydration process are required.
(5) Development of an integrated in-line accelerated oxidation system optimized for accelerated oxidation tanks.
(6) Development of an integrated gas-liquid injection method with an injector.
(7) As a structural feature of the accelerated oxidation tank, it will be cylindrical and create a swirling flow.
(8) Efficient dissolution can be achieved by the nano-micro bubble generation nozzle, eliminating the need for a conventional high-pressure tank to increase the ozone dissolution rate.
A2O2方式は,A2O方式の生物処理法から促進酸化処理後,改めて生物曝気槽を設ける処理方式である。固液分離装置前段に嫌気槽を位置させることで浮上スラッチ,リンを過剰摂取したPAO菌を原水嫌気槽に返送処理する。また,促進酸化槽の前段階で無酸素槽を設け,生物学的窒素とリン除去を行い,窒素除去に必要な炭素源として有機物を利用することで,メタノールの注入を省略することができる。さらに,促進酸化槽を設けて生物処理方式とを組合せることにより,下記の利点ないし技術的特徴を有する。
(1) 活性汚泥法など,従来の生物処理には曝気後沈澱及び脱水処理が必要であったが,促進酸化槽におけるナノマイクロバブルによるスラッチの浮上処理で,沈澱及び脱水処理が不要になる。
(2) 促進酸化槽の過酸化水素を生物処理するとともに,オゾンと過酸化水素は最終的には酸素になり処理水中において高い酸素濃度を維持できるため,これを生物処理(好気性菌による処理)に利用可能である。
(3) オゾン+高分子有機酸触媒剤という,新しい方法のヒドロキシルラジカル生成法を提供するものである。すなわち,促進酸化槽内に腐植土を吊るすことでフミン酸(Humic Acid)やフルボ酸(Fulvic Acid)を放出する。もしくは,液状フミン酸(Humic Acid)フルボ酸(Fulvic Acid)を直接供給する,これらにより,ヒドロキシルラジカル生成の触媒作用を行う。
(4) 促進酸化槽でナノマイクロバブルを利用してスラッチを浮上させ,スカムポンプでの分離処理が出来ることから,沈殿槽と脱水工程が要らない。
(5) 促進酸化槽に最適化された,一体型インライン促進酸化装置の開発。
(6) インジェクターとの一体型の気液注入方法の開発。
(7) 促進酸化槽の構造上の特徴として円筒型とし,旋回流を造る。
(8) ナノマイクロバブル発生ノズルにより効率的溶解が出来るので,従来のオゾン溶存率を高める為の高圧タンクが要らない。 1. Anaerobic tank (A) + Oxygen-free tank (A) + Aerobic tank (O) + (Accelerated oxidation tank) + Biological aeration tank (O)
The A2O2 method is a treatment method in which a biological aeration tank is newly provided after accelerated oxidation treatment from the biological treatment method of the A2O method. By placing an anaerobic tank in front of the solid-liquid separator, the PAO bacteria that have excessive intake of floating slats and phosphorus are returned to the raw water anaerobic tank. In addition, an oxygen-free tank is provided in the previous stage of the accelerated oxidation tank, biological nitrogen and phosphorus are removed, and organic matter is used as a carbon source necessary for nitrogen removal, so that the injection of methanol can be omitted. Furthermore, by providing an accelerated oxidation tank and combining it with a biological treatment system, it has the following advantages and technical features.
(1) Conventional biological treatments such as the activated sludge method require post-aeration precipitation and dehydration, but the slats are floated by nano-microbubbles in the accelerated oxidation tank, so that precipitation and dehydration are no longer necessary.
(2) Biological treatment of hydrogen peroxide in the accelerated oxidation tank, and ozone and hydrogen peroxide will eventually become oxygen and maintain a high oxygen concentration in the treated water. ) Is available.
(3) It provides a new method for generating hydroxyl radicals, ozone + polymer organic acid catalyst. In other words, humic acid and fulvic acid are released by suspending humus in the accelerated oxidation tank. Alternatively, liquid humic acid (Fumvic Acid) and fulvic acid (Fulvic Acid) are supplied directly, thereby catalyzing hydroxyl radical generation.
(4) Since the slats are floated using nano-micro bubbles in the accelerated oxidation tank and can be separated with a scum pump, no precipitation tank and dehydration process are required.
(5) Development of an integrated in-line accelerated oxidation system optimized for accelerated oxidation tanks.
(6) Development of an integrated gas-liquid injection method with an injector.
(7) As a structural feature of the accelerated oxidation tank, it will be cylindrical and create a swirling flow.
(8) Efficient dissolution can be achieved by the nano-micro bubble generation nozzle, eliminating the need for a conventional high-pressure tank to increase the ozone dissolution rate.
また,本発明により,システムのコンパクト化と浄化能力の向上が可能となり,下記の利点ないし技術的特徴を有する。
(1) 曝気槽の容量,曝気時間,配管省略などコンパクト化。
(2) 浄化処理副産物や沈殿物などの二次廃棄物の無発生。
(3) 産業廃棄物量の低減と世界的な水資源不足を解消。
(4) 高分子凝集剤などの化学薬品(バルキング解消用,消泡剤など)を排除して最終処理水に化学成分を残さないので産業用水として最適。
(5) 畜産糞尿の固液分離後の固形物は有機肥料のクオリティの向上。
(6) 凝集剤必要時は凝集性バイオポリマー(微生物凝集剤)の開発使用。 In addition, the present invention makes it possible to make the system compact and improve the purification capability, and has the following advantages and technical features.
(1) Compaction such as aeration tank capacity, aeration time, and piping omitted.
(2) No secondary waste such as purification by-products and precipitates.
(3) Reduce industrial waste and solve global water shortages.
(4) Ideal for industrial water because it eliminates chemical components such as polymer flocculants (for eliminating bulking and antifoaming agents) and leaves no chemical components in the final treated water.
(5) The solid matter after solid-liquid separation of livestock manure improves the quality of organic fertilizer.
(6) When a flocculant is required, develop and use a flocculent biopolymer (microbial flocculant).
(1) 曝気槽の容量,曝気時間,配管省略などコンパクト化。
(2) 浄化処理副産物や沈殿物などの二次廃棄物の無発生。
(3) 産業廃棄物量の低減と世界的な水資源不足を解消。
(4) 高分子凝集剤などの化学薬品(バルキング解消用,消泡剤など)を排除して最終処理水に化学成分を残さないので産業用水として最適。
(5) 畜産糞尿の固液分離後の固形物は有機肥料のクオリティの向上。
(6) 凝集剤必要時は凝集性バイオポリマー(微生物凝集剤)の開発使用。 In addition, the present invention makes it possible to make the system compact and improve the purification capability, and has the following advantages and technical features.
(1) Compaction such as aeration tank capacity, aeration time, and piping omitted.
(2) No secondary waste such as purification by-products and precipitates.
(3) Reduce industrial waste and solve global water shortages.
(4) Ideal for industrial water because it eliminates chemical components such as polymer flocculants (for eliminating bulking and antifoaming agents) and leaves no chemical components in the final treated water.
(5) The solid matter after solid-liquid separation of livestock manure improves the quality of organic fertilizer.
(6) When a flocculant is required, develop and use a flocculent biopolymer (microbial flocculant).
1,53 汚排水浄化システム
3 嫌気槽
4 無酸素槽
5 好気槽
6 促進酸化槽
12,13連通孔
14 連通管
19 水中ポンプ
20 固液分離機(デカンタ)
21 第一移送管
22 第二移送管
31 スカムポンプ
32 第五返送管
1,53Wastewater purification system 3 Anaerobic tank 4 Oxygen-free tank 5 Aerobic tank 6 Promoted oxidation tank 12, 13 communication hole 14 communication pipe 19 Submersible pump 20 Solid-liquid separator (decanter)
21First transfer pipe 22 Second transfer pipe 31 Scum pump 32 Fifth return pipe
3 嫌気槽
4 無酸素槽
5 好気槽
6 促進酸化槽
12,13連通孔
14 連通管
19 水中ポンプ
20 固液分離機(デカンタ)
21 第一移送管
22 第二移送管
31 スカムポンプ
32 第五返送管
1,53
21
Claims (12)
- 汚排水発生源から供給される汚排水を嫌気性菌により浄化処理する嫌気槽と,
前記嫌気槽で浄化処理された汚排水を脱窒菌により浄化処理する無酸素槽と,
前記無酸素槽で浄化処理された汚排水を好気性菌により浄化処理する好気槽と,
前記好気槽で浄化処理された汚排水を酸化分解により浄化処理する促進酸化槽と,
を備え,
これら各槽が他のいずれか又は複数の槽に近接して配置され,各槽における水位が同一に保持される汚排水浄化システムであって,
前記嫌気槽には,断続的に起動する水中ポンプが設置され,
前記水中ポンプには,他端が固液分離機の流入口に接続された第一移送管の一端が接続され,
前記固液分離機の流出口には,他端が前記無酸素槽内に位置する第二移送管の一端が接続され,
前記促進酸化槽には,スカムポンプが浮設され,
前記スカムポンプには,他端が前記嫌気槽内に位置する返送管の一端が接続されていることを特徴とする汚排水浄化システム。 An anaerobic tank that purifies the wastewater supplied from the wastewater source by anaerobic bacteria;
An anaerobic tank that purifies the wastewater purified in the anaerobic tank by denitrifying bacteria;
An aerobic tank for purifying the wastewater purified in the anaerobic tank with an aerobic bacterium,
An accelerated oxidation tank that purifies the wastewater purified by the aerobic tank by oxidative decomposition;
With
A wastewater purification system in which each of these tanks is arranged close to any other tank or a plurality of tanks, and the water level in each tank is kept the same.
In the anaerobic tank, an intermittently activated submersible pump is installed,
The submersible pump is connected to one end of a first transfer pipe whose other end is connected to the inlet of the solid-liquid separator,
The outlet of the solid-liquid separator is connected to one end of a second transfer pipe whose other end is located in the oxygen-free tank,
A scum pump is suspended in the accelerated oxidation tank,
The scum pump is connected to one end of a return pipe whose other end is located in the anaerobic tank. - 前記促進酸化槽における酸化分解が,オゾンの供給, 過酸化水素の供給,高分子有機酸の供給,UV照射,超音波噴射のいずれか又は複数を組み合わせることによって行われることを特徴とする請求項1に記載の汚排水浄化システム。 The oxidative decomposition in the accelerated oxidation tank is performed by any one or a combination of ozone supply, soot hydrogen peroxide supply, polymer organic acid supply, UV irradiation, and ultrasonic spraying. The wastewater purification system according to 1.
- 前記高分子有機酸が,フルボ酸(fulvic acid),フミン酸(humic acid)のいずれか又は複数を少なくとも含むことを特徴とする請求項2に記載の汚排水浄化システム。 The wastewater purification system according to claim 2, wherein the high-molecular organic acid contains at least one or more of fulvic acid and humic acid.
- 前記促進酸化槽における酸化分解が,さらに電気分解を組み合わせることによって行われることを特徴とする請求項2又は3に記載の汚排水浄化システム。 The wastewater purification system according to claim 2 or 3, wherein the oxidative decomposition in the accelerated oxidation tank is performed by further combining electrolysis.
- 前記促進酸化槽が,その中心部に電気分解槽を備えることを特徴とする請求項4に記載の汚排水浄化システム。 The wastewater purification system according to claim 4, wherein the accelerated oxidation tank includes an electrolysis tank at the center thereof.
- マイクロバブル発生器をさらに備え,前記促進酸化槽の底部においてマイクロバブルを発生させることにより,固形物を浮遊させることを特徴とする請求項1から5のいずれか1項に記載の汚排水浄化システム。 The wastewater purification system according to any one of claims 1 to 5, further comprising a microbubble generator, wherein solids are suspended by generating microbubbles at a bottom of the accelerated oxidation tank. .
- 前記促進酸化槽と前記電気分解槽が,同心の円筒状に形成されていることを特徴とする請求項5又は6に記載の汚排水浄化システム。 The wastewater purification system according to claim 5 or 6, wherein the accelerated oxidation tank and the electrolysis tank are formed in a concentric cylindrical shape.
- 前記促進酸化槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする請求項1から7のいずれか1項に記載の汚排水浄化システム。 A first membrane separation tank for purifying the wastewater purified in the accelerated oxidation tank by membrane separation;
An ozone contact tank for purifying the wastewater purified in the first membrane separation tank with ozone;
The wastewater purification system according to any one of claims 1 to 7, further comprising a biological activated carbon tank that purifies the wastewater purified in the ozone contact tank with biological activated carbon. - 前記生物活性炭槽で浄化処理された汚排水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする請求項8に記載の汚排水浄化システム。 The wastewater purification system according to claim 8, further comprising a second membrane separation tank that purifies the wastewater purified in the biological activated carbon tank by membrane separation.
- 前記促進酸化槽で浄化処理された汚排水を生物処理により浄化処理する生物曝気槽と,
前記生物曝気槽で浄化処理された汚排水を膜分離により浄化処理する第一膜分離槽と,
前記第一膜分離槽で浄化処理された汚排水をオゾンにより浄化処理するオゾン接触槽と,
前記オゾン接触槽で浄化処理された汚排水を生物活性炭により浄化処理する生物活性炭槽と,をさらに備えたことを特徴とする請求項1から7のいずれか1項に記載の汚排水浄化システム。 A biological aeration tank for purifying the wastewater purified in the accelerated oxidation tank by biological treatment;
A first membrane separation tank for purifying the wastewater purified in the biological aeration tank by membrane separation;
An ozone contact tank for purifying the wastewater purified in the first membrane separation tank with ozone;
The wastewater purification system according to any one of claims 1 to 7, further comprising a biological activated carbon tank that purifies the wastewater purified in the ozone contact tank with biological activated carbon. - 生物活性炭槽で浄化処理された汚排水を貯める処理水槽と,
前記処理水槽に貯められた処理水が移送され,当該処理水を膜分離により浄化処理する第二膜分離槽をさらに備えたことを特徴とする請求項10に記載の汚排水浄化システム。 A treated water tank for storing the wastewater purified in the biological activated carbon tank;
The wastewater purification system according to claim 10, further comprising a second membrane separation tank for transferring the treated water stored in the treated water tank and purifying the treated water by membrane separation. - 前記第一膜分離槽ないし第二膜分離槽において用いられる膜が,MF膜(精密ろ過膜),UF膜(限外ろ過膜),NF膜(ナノろ過膜)ないしRO膜(逆浸透膜)のいずれか又は複数から選択されることを特徴とする請求項9又は11に記載の汚排水浄化システム。
The membrane used in the first membrane separation tank or the second membrane separation tank is MF membrane (microfiltration membrane), UF membrane (ultrafiltration membrane), NF membrane (nanofiltration membrane) or RO membrane (reverse osmosis membrane). The wastewater purification system according to claim 9 or 11, wherein any one or a plurality of the wastewater purification systems is selected.
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