CN113493251A - Solar anaerobic aerobic membrane reactor - Google Patents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2833—Anaerobic digestion processes using fluidized bed reactors
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- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2001/007—Processes including a sedimentation step
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- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2303/10—Energy recovery
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- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
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- 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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
A solar anaerobic-aerobic membrane reactor comprises: the system comprises a water inlet and distribution chamber, an anaerobic reaction chamber, a precipitation and filtration chamber, a sludge circulation system, an aerobic reaction chamber and a solar heat collection cover; the shell of the water inlet and distribution chamber is of an inverted cone structure and is arranged at the lower part of the anaerobic reaction chamber, the anaerobic reaction chamber is of a cone structure and is arranged at the lower part of the aerobic reaction chamber, the shells of the aerobic reaction chamber and the precipitation filter chamber are of cylindrical structures, the precipitation filter chamber is nested outside the anaerobic reaction chamber and the aerobic reaction chamber and is of a concentric nested structure, and the solar heat collection cover is arranged at the upper parts of the aerobic reaction chamber and the precipitation filter chamber; the water inlet and distribution chamber is communicated with the anaerobic reaction chamber, the anaerobic reaction chamber is communicated with the precipitation filter chamber, and the precipitation filter chamber is communicated with the aerobic reaction chamber; the invention not only improves the biodegradation efficiency and reduces the operation cost, but also achieves the purpose of improving the effluent quality. The invention can be applied to treating various high-concentration sewage for recycling reclaimed water.
Description
Technical Field
The invention belongs to the field of environmental engineering, relates to a sewage treatment technology, and particularly relates to a solar anaerobic-aerobic membrane reactor.
Background
Under the condition that water resources are increasingly poor in China, sewage recycling becomes a main way for solving the shortage of water for cities and towns, and is also an important means for reducing the environmental pollution of the water resources. Therefore, the intensive research and development of the sewage resource utilization technology have very important significance for realizing strategic sewage resource decision in China.
The membrane bioreactor is one of advanced technical methods for purifying and reusing sewage, has been generally accepted and favored by experts and professors in the water treatment industry, and the advanced technical method combines the traditional water treatment technology and the modern water treatment technology together to form unique technical advantages. However, the technical method has high energy consumption and high operation cost, and cannot be comprehensively popularized and applied all the time. In order to solve the problems of high energy consumption and high operation cost, experts in domestic and foreign water treatment industries do a great deal of work, for example, the anaerobic biological treatment technology is utilized to carry out pretreatment on sewage, so that the aims of greatly reducing organic pollutants in the sewage and reducing the operation cost can be fulfilled. UASB is the most widely used anaerobic biological reaction technology, and then an external circulation anaerobic reactor EGSB and an internal circulation anaerobic reactor IC are developed on the basis of the UASB. The circulating anaerobic reactor technology increases the anaerobic reaction rate by enhancing the contact of sewage and microorganisms in the reactor. The EGSB anaerobic reactor circulates the supernatant liquid at the upper part of the reactor to the bottom of the reactor through an external circulating pump, and the IC anaerobic reactor circulates the mixed liquid at the upper part and the bottom by utilizing methane. The two reactors both strengthen mass transfer, improve the volume load of the anaerobic reactor to a certain extent, accelerate the anaerobic reaction process, and have the advantages of high sludge activity, large strain retention, good mud-water contact and good mass transfer effect. Meanwhile, the method has some defects, mainly including that the water distribution is uneven, the short flow phenomenon is easy to occur, the activity of biological bacteria is greatly reduced, and the biodegradation efficiency is seriously influenced; the circulation pipeline is easy to block, the three-phase separation effect is not good, and the effluent quality is influenced to a certain extent. It is due to the above disadvantages that the development and application of this technology is hampered to some extent.
In view of the defects of the aerobic-anaerobic biotechnology, the energy consumption and the operation cost can be greatly reduced through the anaerobic-aerobic combined application and the technological innovation and the synergistic effect of tubificidae and microorganisms.
Disclosure of Invention
The purpose of the invention is realized as follows: a solar anaerobic and aerobic membrane reactor is characterized in that the device comprises: the device comprises a water inlet and distribution chamber, an anaerobic reaction chamber, a sludge circulation system, an aerobic reaction chamber and a solar heat collection cover, wherein the water inlet and distribution chamber consists of a water distributor, a water pump, a permeable layer and a support frame;
the shell of the water inlet and distribution chamber is of an inverted cone structure and is arranged at the lower part of the anaerobic reaction chamber, the anaerobic reaction chamber is of a cone structure, the aerobic reaction chamber is arranged at the upper part of the anaerobic reaction chamber, the aerobic reaction chamber is of a cylinder structure, the shell of the precipitation and filtration chamber is of a cylinder structure and is nested outside the anaerobic reaction chamber and the aerobic reaction chamber, the anaerobic reaction chamber and the aerobic reaction chamber are of concentric nested structures, and the solar heat collecting cover is arranged at the upper parts of the aerobic reaction chamber and the precipitation and filtration chamber;
the water inlet and distribution chamber is communicated with the anaerobic reaction chamber through a permeable layer, the anaerobic reaction chamber is communicated with the precipitation filter chamber through a water outlet pipe of the anaerobic reaction chamber, and the precipitation filter chamber is communicated with the aerobic reaction chamber through a water outlet pipe of the precipitation filter chamber;
the water inlet and distribution chamber, the anaerobic reaction chamber, the precipitation and filtration chamber and the aerobic reaction chamber can be built by adopting a brick-concrete structure, a steel plate welding structure or a glass fiber reinforced plastic structure, and the integral structure can be arranged above the ground or below the ground.
The water inlet and distribution chamber is an inverted cone cylinder type closed volume chamber, and the return sludge pipe is arranged at the top of the inverted cone.
Granular sludge and fluidized filler are placed in the anaerobic reaction chamber, the filler is activated carbon and fly ash, and a return sludge pipe is arranged at the bottom of the anaerobic reaction chamber and is connected with an annular sludge collector.
Be provided with tubificidae and biomembrane filter layer in the sediment filter chamber, tubificidae is perillal earthworm and tubificidae, and perillal earthworm sets up in biomembrane filter layer lower part space, and tubificidae earthworm sets up on the biomembrane filter layer, forms tubificidae degradation layer, and the biofilter layer filler is sponge and slag, and return sludge pipe and inlet tube all set up in the bottom, and the outlet pipe sets up in upper surface layer aquatic.
The biological filler in the aerobic reaction chamber is a three-dimensional elastic filler which is formed by stringing and knotting a plurality of fiber clews by nylon ropes and is hung on the upper cover of the aerobic reaction chamber, and the biological three-dimensional elastic filler is used for providing a carrier for a plurality of biological clews; the tubificidae is tubificidae.
The basic working principle of the invention is as follows: sewage enters a water inlet and distribution chamber 2 through a water pump 3, the sewage is uniformly distributed and forms certain water pressure by a water distributor 1, under the action of the water pressure, the sewage firstly enters an anaerobic reaction chamber 7 through a permeable layer 6, anaerobic digestion is carried out on the sewage and a granular sludge area in the reaction chamber, partial organic matters in the sewage are converted into substances such as methane and the like through preliminary degradation of microorganisms in the anaerobic granular sludge, the methane floats upwards with partial granular sludge in the process of rising along with water flow and forms a suspension area, the sewage continuously enters the suspension area from the sludge area under the pushing of continuous water inlet water pressure and continues anaerobic digestion, the sewage entering the reaction chamber collects surface water through a water outlet pipe 8 of the anaerobic reaction chamber after certain hydraulic retention time, then enters a precipitation filter chamber 10 through a precipitation filter chamber pipe 9, and meanwhile, the methane in the anaerobic reaction chamber enters an air outlet pipe of the anaerobic reaction chamber after being collected, a part of the marsh gas enters the water inlet and distribution chamber 2 through the air inlet pipe 11 of the water inlet and distribution chamber, so as to enhance the stirring and suspension of the granular sludge in the anaerobic reaction chamber 7 and improve the biodegradation efficiency; the other part of the marsh gas is supplied to a gas user through a gas delivery pipe 12. The sewage entering the precipitation filter chamber 10 is degraded again by the water earthworms on one hand, and is precipitated in the tank on the other hand, the sewage containing a small amount of granular sludge enters the earthworm biomembrane filter layer 13, the granular sludge is intercepted by the filter layer and can gradually form a biomembrane on the filler of the granular sludge, and the biomembrane not only intercepts suspended matters, but also can further degrade organic matters in the sewage to a certain extent. The earthworms shuttle in the filter material to phagocytose the organic matters and the aged biological membrane in the intercepted sludge. The earthworm and the biological membrane have synergistic effect, play a role in sewage purification treatment from multiple aspects, effectively remove heavy metal elements in sewage, and strengthen the sewage purification effect. Firstly, organic matters in the sewage are decomposed and absorbed, secondly, the structure of microorganisms is changed, the biological activity of the microorganisms is improved, the conversion of C, N in the filter layer is promoted, heavy metal elements are effectively degraded, the air permeability of the filter layer is increased, and the blockage is prevented. The surface water treated by the earthworm biomembrane filter layer enters an aerobic reaction chamber through a water outlet pipe 14 and a water distribution pipe 15 of a precipitation filter chamber, air is added into sewage in the aerobic reaction chamber through a Roots blower, high-speed airflow plays a role in disturbance and stirring on one hand, so that sludge sinking at the bottom continuously floats upwards, and on the other hand, the air is fully dissolved in the sewage, so that organic matters and heavy metal elements in the sewage are continuously degraded by tubificidae, plankton clusters and biological clusters in the biological three-dimensional elastic filler 17 in the sewage in an aerobic state. The degraded sewage is further processed by membrane purification through a membrane module 19, and the processed reclaimed water is delivered to users through a water outlet pipe 20.
When the ambient temperature is low, the solar heat collecting cover 27 transmits solar heat energy to the interior of the device, and the normal working temperature requirement of the device is ensured through the conduction and heat storage effects of water flow. When the sedimentation filter chamber 10 or the water inlet distribution chamber 2 has more sludge, the sludge is returned to the anaerobic reaction chamber 7 through the sludge pump 26, thereby enhancing the treatment effect of the anaerobic reaction chamber.
The invention has certain novelty, and concretely, the invention has no similar invention before the filing date, has been published in domestic and foreign publications, has been publicly used at domestic and foreign countries or is known to public in other ways, and has not been filed by others to the patent office and is described in the patent application document published after the filing date.
The invention also has certain creativity, particularly embodies the anaerobic and aerobic biomembrane treatment technology developed in recent decades at home and abroad before the application date, improves the volume load to a certain extent, reduces the operation cost, but also has the problems of low biodegradation efficiency, unstable effluent quality and the like. The invention has the advantages that through the anaerobic-aerobic combined application and the technological innovation, through the synergistic effect of the tubificidae and the microorganism, the energy consumption and the operation cost can be greatly reduced, the biodegradation efficiency can be greatly improved, the effluent quality is stabilized, and the normal and efficient work can be still realized at lower environmental temperature. Compared with the anaerobic and aerobic biomembrane treatment technology which is generally adopted at home and abroad at present, the invention has outstanding substantive characteristics and remarkable progress.
The invention also has certain practicability, and is particularly embodied in that the invention can be manufactured or used and can produce the following positive and beneficial effects:
(1) the granular sludge filler is put into the anaerobic reaction chamber, so that the acclimation time of anaerobic bacteria can be greatly shortened, and the suspension property of the granular sludge can be improved. The granular activated sludge, the tubificidae and the biological membrane are organically combined together, so that the biodegradation efficiency can be greatly improved, heavy metal elements in the sewage can be effectively removed, and the three-phase separation effect is obviously improved; but also fundamentally solves the problem that the sludge in the anaerobic reaction chamber is easy to lose, prolongs the retention time of the sludge, saves an anaerobic filter tank, reduces the operation cost and achieves the aim of improving the quality of the effluent.
(2) The invention can not only make the granular sludge in a suspended active state and improve the biological oxidation efficiency, but also improve the water permeability of a filtering layer of the biological membrane through the recycling and circulation of the methane; through setting up into water cloth hydroecium, can guarantee that the water distribution is even stable, can not take place the outflow phenomenon.
(3) The solar energy collecting and storing device can ensure that the device can still work normally and efficiently at a lower ambient temperature. The invention is not influenced by seasonal temperature change, and can normally operate not only in spring and summer when the temperature is higher, but also in autumn and winter when the temperature is lower.
(4) The invention can be used in various engineering projects for sewage treatment and purification and reuse.
Drawings
FIG. 1 is a sectional elevation view of an embodiment of the present invention
In the figure, 1, a water distributor 2, a sewage inlet and water distribution chamber 3, a water pump 4, a support frame 5, a sewage inlet pipe 6, a permeable layer 7, an anaerobic reaction chamber 7-1, anaerobic fluidized filler 8, an anaerobic reaction chamber outlet pipe 9, a precipitation filter chamber inlet water distribution pipe 10, a precipitation filter chamber 10-1, tubificidae 11, a biogas return pipe 12, a biogas outlet pipe 13, an earthworm biomembrane filter layer 14, a precipitation filter chamber outlet pipe 15, an aerobic reaction chamber inlet water distribution pipe 16, a Roots blower 17, biological three-dimensional elastic filler 18, an aerobic reaction chamber 19, a membrane module 20, an aerobic reaction chamber outlet pipe 21, a water pump 22, a sewage inlet water distribution chamber sludge return pipe 23, an anaerobic reaction chamber granular sludge inlet pipe 24, a precipitation filter chamber granular sludge return pipe 25, a precipitation filter chamber granular sludge return pipe 26, a sludge pump 27 and a solar heat collection cover.
Detailed Description
The invention comprises the following steps: the device comprises a water inlet and distribution chamber, an anaerobic reaction chamber, a sludge circulation system, an aerobic reaction chamber and a solar heat collection cover, wherein the water inlet and distribution chamber consists of a water distributor, a water pump, a permeable layer and a support frame;
the shell of the water inlet and distribution chamber is of an inverted cone structure and is arranged at the lower part of the anaerobic reaction chamber, the anaerobic reaction chamber is of a cone structure, the aerobic reaction chamber is arranged at the upper part of the anaerobic reaction chamber, the aerobic reaction chamber is of a cylindrical structure, the shell of the sedimentation and filtration chamber is of a cylindrical structure and is nested outside the anaerobic reaction chamber and the anaerobic reaction chamber, the anaerobic reaction chamber and the aerobic reaction chamber are of concentric nested structures, and the solar heat collecting cover is arranged at the upper parts of the aerobic reaction chamber and the sedimentation and filtration chamber;
the water inlet and distribution chamber is communicated with the anaerobic reaction chamber through a permeable layer, the anaerobic reaction chamber is communicated with the precipitation filter chamber through a water outlet pipe of the anaerobic reaction chamber, and the precipitation filter chamber is communicated with the aerobic reaction chamber through a water outlet pipe of the precipitation filter chamber;
the water inlet and distribution chamber, the anaerobic reaction chamber, the precipitation and filtration chamber and the aerobic reaction chamber can be constructed by adopting a glass fiber reinforced plastic structure, and the integral structure can be arranged below the ground.
The water inlet and distribution chamber is an inverted cone cylinder type closed volume chamber, and the return sludge pipe is arranged at the top of the inverted cone.
Granular sludge and fluidized filler are placed in the anaerobic reaction chamber, the filler is activated carbon and fly ash, and a return sludge pipe is arranged at the bottom of the anaerobic reaction chamber and is connected with an annular sludge distributor.
Be provided with tubificidae and biomembrane filter layer in the sediment filter chamber, tubificidae is perillal earthworm and tubificidae, and perillal earthworm sets up in biomembrane filter layer lower part space, and tubificidae earthworm sets up on the biomembrane filter layer, forms tubificidae degradation layer, and the biofilter layer filler is sponge and slag, and return sludge pipe and inlet tube all set up in the bottom, and the outlet pipe sets up in upper surface layer aquatic.
The biological filler in the aerobic reaction chamber is a three-dimensional elastic filler which is formed by stringing and knotting a plurality of fiber clews by nylon ropes and is hung on the upper cover of the aerobic reaction chamber, and the biological three-dimensional elastic filler is used for providing a carrier for a plurality of biological clews; the tubificidae is tubificidae.
The embodiment of the invention is that the treated sewage is turmeric pharmaceutical production sewage, the COD of the inlet water is 3800-4500 mg/L, anaerobic granular sludge is inoculated during starting, and microbial agent TR10-20, activated carbon and fly ash carriers are adopted to form biological granular sludge. The operation is carried out at the temperature of about 32 ℃, and the organic load is 35KgCOD/m3d, the COD removal rate is 92-97%, and the operation cost is 0.45-0.56 yuan/cube.
While there has been described in the foregoing drawings and specific embodiments of the present invention, it will be understood that the invention is not limited to the details of construction and particular embodiments thereof, but is capable of other modifications within the scope of the invention as determined by the appended claims.
Claims (5)
1. A solar anaerobic aerobic membrane reactor is characterized in that the device comprises: the device comprises a water inlet and distribution chamber, an anaerobic reaction chamber, a sludge circulation system, an aerobic reaction chamber and a solar heat collection cover, wherein the water inlet and distribution chamber consists of a water distributor, a water pump, a permeable layer and a support frame;
the shell of the water inlet and distribution chamber is of an inverted cone structure and is arranged at the lower part of the anaerobic reaction chamber, the anaerobic reaction chamber is of a cone structure, the aerobic reaction chamber is arranged at the upper part of the anaerobic reaction chamber, the aerobic reaction chamber is of a cylinder structure, the shell of the precipitation and filtration chamber is of a cylinder structure and is nested outside the anaerobic reaction chamber and the aerobic reaction chamber, the anaerobic reaction chamber and the aerobic reaction chamber are of concentric nested structures, and the solar heat collecting cover is arranged at the upper parts of the aerobic reaction chamber and the precipitation and filtration chamber;
the water inlet and distribution chamber is communicated with the anaerobic reaction chamber through a permeable layer, the anaerobic reaction chamber is communicated with the precipitation filter chamber through a water outlet pipe of the anaerobic reaction chamber, and the precipitation filter chamber is communicated with the aerobic reaction chamber through a water outlet pipe of the precipitation filter chamber;
the water inlet and distribution chamber, the anaerobic reaction chamber, the precipitation and filtration chamber and the aerobic reaction chamber can be built by adopting a brick-concrete structure, a steel plate welding structure or a glass fiber reinforced plastic structure, and the integral structure can be arranged above the ground or below the ground.
2. The solar anaerobic-aerobic membrane reactor according to claim 1, wherein the water inlet distribution chamber is an inverted conical cylinder type closed volume chamber, and the return sludge pipe is arranged at the top of the inverted conical cylinder.
3. The solar anaerobic-aerobic membrane reactor according to claim 1, wherein granular sludge and fluidized packing are placed in the anaerobic reaction chamber, the packing is activated carbon and fly ash, and the return sludge pipe is arranged at the bottom of the anaerobic reaction chamber and connected with the annular sludge collector.
4. The solar anaerobic-aerobic membrane reactor as claimed in claim 1, wherein the precipitation filtration chamber is internally provided with tubificidae and a biofilm filtration layer, the tubificidae is a branchia sulcata and a branchia holtziae, the branchia sulcata is arranged in the lower space of the biofilm filtration layer, the branchia holtziae is arranged on the biofilm filtration layer to form a tubificidae degradation layer, the biofilm filtration layer is filled with sponge and slag, the return sludge pipe and the water inlet pipe are both arranged at the bottom, and the water outlet pipe is arranged in the upper surface water.
5. The solar anaerobic-aerobic membrane reactor of claim 1, wherein the biological filler in the aerobic reaction chamber is a three-dimensional elastic filler, the biological three-dimensional elastic filler is formed by stringing a plurality of fiber coils by nylon ropes, the biological three-dimensional elastic filler is hung on the upper cover of the aerobic reaction chamber, and the tubificidae is tubificidae.
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| CN202110854893.6A CN113493251A (en) | 2021-07-29 | 2021-07-29 | Solar anaerobic aerobic membrane reactor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665304A (en) * | 2009-09-29 | 2010-03-10 | 河北农业大学 | Solar Anaerobic Granular Sludge Circulating Reactor |
| CN203946953U (en) * | 2014-07-01 | 2014-11-19 | 南京宏博环保实业有限公司 | A kind of compound sequence batch (membrane biological reaction apparatus |
| US20150368131A1 (en) * | 2013-02-01 | 2015-12-24 | Universidade De Santiago De Compostela | Integrated system of a methanogenic anaerobic reactor and membrane bioreactor for the elimination of organic material and nitrogen from wastewater |
| CN105314797A (en) * | 2015-11-23 | 2016-02-10 | 上海应用技术学院 | Bacterial earthworm filter for synchronous treatment of sewage and sludge and application thereof |
| CN107585956A (en) * | 2017-09-22 | 2018-01-16 | 浙江海洋大学 | For removing the sewage-treatment plant of removing heavy metals |
-
2021
- 2021-07-29 CN CN202110854893.6A patent/CN113493251A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665304A (en) * | 2009-09-29 | 2010-03-10 | 河北农业大学 | Solar Anaerobic Granular Sludge Circulating Reactor |
| US20150368131A1 (en) * | 2013-02-01 | 2015-12-24 | Universidade De Santiago De Compostela | Integrated system of a methanogenic anaerobic reactor and membrane bioreactor for the elimination of organic material and nitrogen from wastewater |
| CN203946953U (en) * | 2014-07-01 | 2014-11-19 | 南京宏博环保实业有限公司 | A kind of compound sequence batch (membrane biological reaction apparatus |
| CN105314797A (en) * | 2015-11-23 | 2016-02-10 | 上海应用技术学院 | Bacterial earthworm filter for synchronous treatment of sewage and sludge and application thereof |
| CN107585956A (en) * | 2017-09-22 | 2018-01-16 | 浙江海洋大学 | For removing the sewage-treatment plant of removing heavy metals |
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