CN110697978A - Method for improving purification capacity of drainage system - Google Patents
Method for improving purification capacity of drainage system Download PDFInfo
- Publication number
- CN110697978A CN110697978A CN201910965745.4A CN201910965745A CN110697978A CN 110697978 A CN110697978 A CN 110697978A CN 201910965745 A CN201910965745 A CN 201910965745A CN 110697978 A CN110697978 A CN 110697978A
- Authority
- CN
- China
- Prior art keywords
- muddy water
- water
- pipeline
- sewage
- pure oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for improving the purification capacity of a drainage system, which is mainly applied to the treatment of muddy water in a municipal drainage pipe network and a rear-end facility, wherein the municipal drainage pipe network comprises a rainwater pipeline, a sewage pipeline, a rainwater and sewage converging pipeline and a converging box culvert, the rear-end facility comprises a facility with the function of regulating and storing rainwater or sewage, and the method comprises the following steps: introducing pure oxygen or pure oxygen water into the muddy water, and carrying out reoxygenation treatment on the black and odorous muddy water; adding a chemical agent into the muddy water, and reacting with the muddy water to change the properties of the sludge; and sewage treatment microbial inoculum is introduced into the muddy water to improve the sludge activity. The invention can adopt different methods for targeted treatment aiming at different environments of muddy water, remove pollutants such as ammonia nitrogen, total phosphorus, COD and the like while eliminating black and stink, and the treated water body can not cause black and stink river channels even if being discharged into the river channels, thereby greatly reducing the pollution of the river channels, essentially treating the problem of muddy water black and stink, not needing secondary treatment at the rear end, and saving resources and cost.
Description
Technical Field
The invention relates to a method for improving the purification capacity of a drainage system.
Background
The current drainage modes of Shanghai city comprise two types according to the belonged areas, the outer ring line takes the inner area as the main mode of forced drainage, and the other areas take the self-drainage mode as the main mode; the drainage system coexists in a split system and a combined system. For a combined drainage system, because the interception multiple is low and the current sewage treatment plant does not have the capacity of treating the combined sewage in rainy days, the intercepted combined sewage is discharged in an overflow manner, and meanwhile, the overflow of the combined sewage in rainy days can cause serious pollution to the received water body; the diversion system causes the phenomenon of river discharge in a dry river due to the mixed connection of rain and sewage, and at present, the river discharge in the dry river is controlled mainly by arranging a closure facility, but the overflow rain and sewage mixed water enters a water body to pollute a river channel in a rainy day. Generally speaking, the pollution caused by releasing the river in rainy days to the water body is not ignored.
When the rainfall intensity is low or the sewage intercepted by the front end pipeline is insufficient, the runoff and the pollutants carried by the pipeline enter a front pool of a pump station, the mixed sewage is intercepted by an intercepting pump in the pump station, and the river is not discharged, so that the pollutants are easy to deposit in the front pool. When the rainfall intensity is high and the water quantity exceeds the interception capacity of the pump station, the front pool sewage is pumped into an external river channel by a submersible sewage pump, namely, the river is released. Excessive pollutants discharged into a front pool of a pump station are the main cause of black and odorous water, and because aerobic microorganisms consume dissolved oxygen in water in the pollutant decomposition process, natural reoxygenation cannot be supplemented in time, the water is in an anoxic state. In this case, the mass propagation of anaerobic microorganisms is dominant, and gases such as hydrogen sulfide and methane are generated in the anaerobic decomposition process, resulting in odor. Ferrous sulfide and other substances generated in an anaerobic state are black, so that the water body is blackened. When the river is released, the black and odorous sludge deposited in the front pool of the pump station can cause serious pollution to the external river channel.
The current method for solving the problem still remains to improve the degree of mechanized maintenance, such as increasing the dredging of the sludge in a drainage outlet, a pipeline, an inspection well and a catch basin and reducing the amount of the sludge entering a pump station so as to reduce the pollution load of discharging river; the pump station forebay sediment can also be removed through the closure cage coupling; and corresponding treatment facilities are adopted for treating the washing tail water. However, this has the following problems: (1) the pipeline clearing and dredging and the intercepting well have large energy consumption and much labor consumption, and the treatment of tail water and sludge at the rear end is also a big problem and is not economical; (2) the time of releasing the river from the pump station is generally unstable, the sediment in the front pool of the pump station can not be cleaned by the traditional method, the sludge at the bottom is still black and odorous, the sediment in the front pool of the pump station is continuously deposited, the sediment in the front pool of the pump station is flushed out to still cause large area black and odorous riverway, and the effect is not obvious.
Besides the front pool, the back-end facilities such as a water collecting well, a regulation and storage pool and the like can also deposit black and odorous sludge to pollute the river. In addition, most treatment measures are difficult to reach because the pipelines of municipal drainage pipe networks and box culverts in riverways are buried underground for a long time, the prior method is generally dredging, and then the treatment of sludge in the channel is carried out outside, so that the energy consumption is large, the effect is small, the sludge can still be accumulated after the dredging, and the problem cannot be fundamentally solved.
Disclosure of Invention
The invention aims to solve the technical problems of black and odorous mud water, sludge deposition, difficult treatment and poor treatment effect in the prior art.
The technical scheme of the invention is as follows: a method for improving the purification capacity of a drainage system, which is applied to the treatment of muddy water in a municipal drainage pipe network and a back-end facility, wherein the municipal drainage pipe network comprises a rainwater pipeline, a sewage pipeline, a rainwater and sewage converging pipeline and a converging box culvert, the back-end facility comprises a facility with the function of regulating and storing rainwater or sewage, and the method mainly comprises the following steps:
1) introducing pure oxygen or pure oxygen water into the muddy water, and carrying out reoxygenation treatment on the black and odorous muddy water;
2) adding a chemical agent into the muddy water, and reacting with the muddy water to change the properties of the sludge;
3) and sewage treatment microbial inoculum is introduced into the muddy water to improve the sludge activity.
Further, in the invention, when the muddy water is collected in the facility with the function of regulating and storing the rainwater or the sewage, the muddy water is treated and simultaneously stirred, so that the bottom sludge deposited at the bottom of the facility can be fully contacted with pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum.
Further, in the invention, when the muddy water is in the pipeline of the municipal drainage pipe network or in the box culvert, the ejector is arranged on the pipeline or the box culvert, and the pure oxygen or the pure oxygen water, the chemical agent and the sewage treatment microbial inoculum are flushed into the pipeline through the ejector.
Further, in the invention, when the muddy water is in the pipeline of the municipal drainage pipe network, the pipeline is cleaned in advance before the muddy water is treated, and the sludge deposited in the pipeline is flushed out.
Further, in the invention, the pure oxygen water is prepared by adopting a pressure dissolution or micro-nano aeration method.
Further, in the invention, the chemical agent is pretreated, including that a certain amount of chemical agent is added into an agent dissolving pool to prepare an agent solution, and then the agent solution is introduced into the muddy water.
Further, in the invention, the chemical agent is one or more of calcium nitrate, calcium peroxide and potassium hydrogen persulfate.
Further, the sewage treatment microbial inoculum is pretreated, the sewage treatment microbial inoculum comprises indigenous bacteria and functional bacteria, the pretreatment comprises the steps of adding the cultured indigenous bacteria and the activated functional bacteria into a microbial bacteria liquid incubator to prepare bacterial liquid, and then introducing the bacterial liquid into the muddy water.
Further, in the invention, the functional bacteria are saccharomycetes and/or bacillus subtilis.
Further, in the invention, the facility with the function of regulating and storing rainwater or sewage is one of a pump station forebay, a water collecting well and a regulating and storing pool, stirring of muddy water is performed by returning water stirring or stirring by a stirring device, and the stirring device is a submersible water impeller or an ejector.
Compared with the prior art, the invention has the following advantages: according to the invention, DO (dissolved oxygen) and black odor can be rapidly improved and eliminated by carrying out reoxygenation treatment on the muddy water, then the anaerobic environment and the properties of the bottom mud are changed by adding a chemical agent, finally the cultured indigenous bacteria and the activated functional bacteria are added to help the water to establish strong purification capacity, an immune system of the water is created, different methods are adopted for pertinently treating the muddy water in different environments, pollutants such as ammonia nitrogen, total phosphorus, COD (chemical oxygen demand) and the like are removed while the black odor is eliminated, the treated water can not cause the black odor of the river channel even if being discharged into the river channel, the pollution of the river channel is greatly reduced, the problem of the black odor of the muddy water can be essentially treated, and secondary treatment at the rear end is not needed, so that resources and cost are.
Drawings
FIG. 1 is a schematic diagram of the present invention applied to a pump station forebay for processing muddy water (wherein a dotted arrow A indicates a flow direction of water stirred by a stirring device, a solid arrow B indicates a flow direction of pure oxygen water, a solid arrow C indicates a flow direction of a chemical agent, a solid arrow D indicates a flow direction of a bacteria liquid, a solid arrow E indicates a flow direction of a pipeline overflow water, and a solid arrow F indicates a flow direction of a river-discharging water);
wherein: 1. a forebay; 2. a stirring device; 3. an oxygen generator; 4. an oxygen dissolving machine; 5. a medicament dissolving tank; 6. a microorganism liquid culture device.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example (b):
the invention relates to a method for improving the purification capacity of a drainage system, which is a specific embodiment of the method provided by the invention and is mainly applied to treatment of muddy water in a municipal drainage pipe network and a rear-end facility, wherein the municipal drainage pipe network comprises a rainwater pipeline, a sewage pipeline, a rainwater and sewage converging pipeline and a converging box culvert, and the rear-end facility comprises a facility with a function of regulating and storing rainwater or sewage.
The method mainly comprises the following steps:
1) introducing pure oxygen or pure oxygen water into the muddy water, and carrying out reoxygenation treatment on the black and odorous muddy water;
2) adding a chemical agent into the muddy water, and reacting with the muddy water to change the properties of the sludge;
3) and sewage treatment microbial inoculum is introduced into the muddy water to improve the sludge activity.
The facilities with the function of regulating and storing rainwater or sewage can be a pump station forebay 1, a water collecting well or a regulating and storing pool. When the muddy water is collected in any facility, the muddy water is treated and is simultaneously matched with stirring, so that the bottom sediment can fully contact pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum. The stirring of muddy water adopts returning cage water stirring or stirring of stirring device 2, and stirring device 2 can be a submersible water impeller or an ejector.
In this embodiment, take forebay 1 as an example, as shown in fig. 1, when handling 1 muddy water of forebay, set up dive impeller in forebay 1, not shown, dive impeller includes dive mixer and guide arm, and the guide arm setting is in forebay 1, and the dive mixer is installed on the guide arm with the liftable for fully stirring the bed mud, and the dive mixer still connects a hand calabash through wire rope, adjusts the position of dive mixer through hand calabash when stirring the bed mud.
While stirring the bottom sludge of the forebay 1 by using the stirring device 2, pure oxygen water is introduced into the sludge water for reoxygenation treatment. The pure oxygen water is prepared by adopting a pressure dissolution or micro-nano aeration method. Specifically, the pure oxygen water is prepared by an oxygen generator 3 and an oxygen dissolving machine 4, wherein the oxygen generator 3 is a PSA pressure swing adsorption oxygen generator. The PSA pressure swing adsorption oxygenerator prepares pure oxygen to supply to the oxygen dissolving machine 4, and the purity of the prepared oxygen reaches 90 percent. The principle of pressure swing adsorption oxygen generation is to utilize the characteristic that the equilibrium adsorption capacity of the special adsorbent for oxygen generation increases along with the rise of oxygen partial pressure to carry out the operation method of pressure adsorption and pressure reduction desorption. Pressure swing adsorption is generally operated at normal temperature, and heat supply is not needed, so that the cycle period is short, automation is easy to realize, and the method is particularly suitable for large-scale gas separation production processes. The PSA oxygen production process mainly comprises 4 circulation steps of pressure-rising adsorption, pressure equalization, pressure-reducing desorption and flushing. The oxygen dissolving machine 4 releases micro-nano bubbles in the anoxic water body by taking pure oxygen prepared by the PSA pressure swing adsorption oxygen generator as an air source, and continuously supplements active oxygen to the water to prepare high-concentration supersaturated oxygen-enriched water, namely the required pure oxygen water.
The preparation of pure oxygen water adopts micro-nano aeration technique, when the micro-nano bubble is blown into to the oxygen deficiency water, along with the consumption of the dissolved oxygen in the bubble, constantly supplyes active oxygen to the aquatic, increases the oxygen content in the aquatic rapidly, improves dissolved oxygen efficiency greatly, and the utilization ratio of pure oxygen is higher. The prepared pure oxygen water can greatly prevent pure oxygen from escaping, and is brought into deep sludge along with water flow, and the downward permeability is good. After pure oxygen water is introduced into the forebay 1, the pure oxygen water is fully mixed with muddy water for reaction, DO can be rapidly improved, and black and odorous substances can be eliminated.
However, the present invention is not limited thereto, and the aeration and oxygenation may be performed directly to the muddy water by a pure oxygen aerator in a pure oxygen aeration manner.
Aerating and oxygenating water to convert water from oxygen deficiency to oxygen enrichment, inhibiting anaerobic microorganisms and promoting the propagation of aerobic microorganisms in the oxygen-enriched environment, so that organic matters in the water are aerobically decomposed and NH is oxidized at the same time3、FeS、H2S, etc., to convert it to NO3 -And Fe (OH)3。Fe(OH)3Because the sediment is insoluble in water, a protective layer is formed on the surface of the sediment in a precipitating way, the sediment on the upper layer is prevented from floating upwards again under the influence of hydraulic conditions, and the secondary pollution of the sediment to the water on the middle and upper layers is weakened. In addition, oxygenation can slow the release of phosphorus in the sediment and oxidize or degrade reducing substances in the surface sediment.
The oxygen transfer speed of common air aeration is slow, the concentration of the formed saturated dissolved oxygen is low, and the common air aeration is difficult to adapt to the high-pollution condition after rainstorm and river release. And with the method of pure oxygen aeration, the transfer rate of oxygen is about 4.7 times of that of the ordinary air aeration, the DO content level of the water body can be rapidly improved, and the saturated dissolved oxygen concentration formed by the pure oxygen aeration is also greatly higher than that of the ordinary aeration.
And adding a chemical agent into the mud water of the forebay 1, reacting with the mud water, and changing the properties of the sludge, wherein the chemical agent can be one or more of calcium nitrate, calcium peroxide and potassium hydrogen persulfate. In this embodiment, the chemical agent is calcium nitrate, and the calcium nitrate is first pretreated, including adding a certain amount of calcium nitrate into the agent dissolving tank 5 to prepare a calcium nitrate solution, and then introducing the calcium nitrate solution into the muddy water. The dosage of the calcium nitrate is 0.5-2 kg per square meter, and the prepared calcium nitrate solution can promote the denitrification process, quickly hydrolyze the bottom mud and eliminate black and odorous.
And (3) introducing a sewage treatment microbial inoculum into the mud water of the forebay 1 to improve the sludge activity. In the embodiment, a sewage treatment microbial inoculum is pretreated firstly, the sewage treatment microbial inoculum comprises indigenous bacteria and functional bacteria, the pretreatment comprises the steps of adding the cultured indigenous bacteria and the activated functional bacteria into a microbial liquid incubator 6 to obtain a bacterial liquid, and then introducing the bacterial liquid into the muddy water. The functional bacteria can be yeast and/or Bacillus subtilis. The addition of the microbial inoculum can improve the activity of indigenous bacteria in the forebay 1 and accelerate the degradation of pollutants such as ammonia nitrogen, total phosphorus, COD and the like.
After the bottom sludge of the front pool 1 reacts with pure oxygen water, calcium nitrate solution and bacteria solution for a period of time, the bottom sludge is yellow and has no obvious bottom sludge particles, the bottom sludge is basically hydrated into fluid, and the removal rates of ammonia nitrogen, total phosphorus and COD are all over 90 percent. The black and odorous bottom mud is thoroughly eliminated, the black and odorous river channel cannot be caused even if the bottom mud enters the river channel along with the river discharge, the treatment capacity of the sludge and the water body at the rear end, intercepted and entering the sewage pipe network, can be reduced, and the pollution to the river discharge is greatly reduced.
When muddy water is in a pipeline of a municipal drainage pipe network, the treatment method comprises two steps:
the first processing method comprises the following steps:
(1) before the muddy water is treated, the pipeline is cleaned in advance, the sludge deposited in the pipeline is flushed out, and the rear end is treated;
(2) in order to prevent the continuous accumulation of the following sludge, pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum are introduced from a pipeline rain sewage inlet and flow along with the sludge water, so that the problem of black and odor of sewage and sludge is solved fundamentally.
The second processing method comprises the following steps:
the jet aerator is directly arranged on the pipeline, the jet direction is the same as the water flow direction, pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum are flushed into the pipeline through the jet aerator, the pure oxygen or pure oxygen water, the chemical agents and the sewage treatment microbial inoculum are treated from the beginning and slowly permeate downwards, and finally the black and odorous sludge and sewage treatment of the whole pipeline are finished.
In the two treatment methods, the chemical agents are one or more of calcium nitrate, calcium peroxide and potassium hydrogen persulfate, and the addition of the chemical agents can change the anaerobic environment and the sludge property and eliminate black and odor. The sewage treatment microbial inoculum comprises indigenous bacteria and functional bacteria, wherein the functional bacteria can be saccharomycetes and/or bacillus subtilis, the indigenous bacteria are added after culture, and the functional bacteria are added after activation.
When the muddy water is in the box culvert, pure oxygen or pure oxygen water, a chemical agent and a sewage treatment microbial inoculum are introduced from the box culvert rain sewage inlet, flow together with the muddy water and react with the muddy water so as to continuously treat the sludge. In addition, can also install the ejector on the box culvert, the efflux direction is the same with the rivers direction, rush into the box culvert through the ejector with pure oxygen or pure oxygen water, chemical agent, sewage treatment microbial inoculum, handle black smelly mud, sewage in the whole box culvert. Wherein the chemical agent is one or more of calcium nitrate, calcium peroxide and potassium hydrogen persulfate, and the added chemical agent can change anaerobic environment and sludge properties and eliminate black and odor. The sewage treatment microbial inoculum comprises indigenous bacteria and functional bacteria, wherein the functional bacteria are saccharomycetes and/or bacillus subtilis, the indigenous bacteria are added after culture, and the functional bacteria are added after activation.
It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (10)
1. A method for improving the purification capacity of a drainage system is characterized by comprising the following steps: the method is applied to treatment of muddy water in a municipal drainage pipe network and a rear-end facility, the municipal drainage pipe network comprises a rainwater pipeline, a sewage pipeline, a rainwater and sewage converging pipeline and a converging box culvert, the rear-end facility comprises a facility with a function of regulating and storing rainwater or sewage, and the method mainly comprises the following steps:
1) introducing pure oxygen or pure oxygen water into the muddy water, and carrying out reoxygenation treatment on the black and odorous muddy water;
2) adding a chemical agent into the muddy water, and reacting with the muddy water to change the properties of the sludge;
3) and sewage treatment microbial inoculum is introduced into the muddy water to improve the sludge activity.
2. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: when the muddy water is collected in the facility with the function of regulating and storing rainwater or sewage, the muddy water is treated and simultaneously stirred, so that the bottom sludge deposited at the bottom of the facility can fully contact with pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum.
3. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: when muddy water is in the pipeline of the municipal drainage pipe network or in the box culvert, an ejector is arranged on the pipeline or the box culvert, and pure oxygen or pure oxygen water, chemical agents and sewage treatment microbial inoculum are flushed into the pipeline through the ejector.
4. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: when muddy water is in the pipeline of the municipal drainage pipe network, the pipeline is cleaned in advance before the muddy water is treated, and the sludge deposited in the pipeline is flushed out.
5. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: the pure oxygen water is prepared by adopting a pressure dissolution or micro-nano aeration method.
6. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: and (3) pretreating the chemical agent, namely adding a certain amount of chemical agent into an agent dissolving tank (5) to prepare an agent solution, and introducing the agent solution into the muddy water.
7. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: the chemical agent is one or more of calcium nitrate, calcium peroxide and potassium hydrogen persulfate.
8. A method of increasing the purification capacity of a drainage system according to claim 1, wherein: the sewage treatment microbial inoculum is pretreated, the sewage treatment microbial inoculum comprises indigenous bacteria and functional bacteria, the pretreatment comprises the step of adding the cultured indigenous bacteria and the activated functional bacteria into a microbial bacteria liquid incubator (6) to obtain bacterial liquid, and then introducing the bacterial liquid into the muddy water.
9. A method of increasing the purification capacity of a drainage system according to claim 8, wherein: the functional bacteria are saccharomycetes and/or bacillus subtilis.
10. A method of increasing the purification capacity of a drainage system according to claim 2, wherein: the facility with rainwater or sewage regulation function is one of pump station forebay (1), sump pit, regulation pond, and the stirring of muddy water adopts back cage water stirring or agitating unit (2) stirring, agitating unit (2) are dive impeller or ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965745.4A CN110697978A (en) | 2019-10-12 | 2019-10-12 | Method for improving purification capacity of drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965745.4A CN110697978A (en) | 2019-10-12 | 2019-10-12 | Method for improving purification capacity of drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110697978A true CN110697978A (en) | 2020-01-17 |
Family
ID=69199396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910965745.4A Pending CN110697978A (en) | 2019-10-12 | 2019-10-12 | Method for improving purification capacity of drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110697978A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20103550U1 (en) * | 2001-02-28 | 2001-06-13 | Kronawitter Andreas | Floating gas vent for pond aeration |
| CN1557740A (en) * | 2004-01-14 | 2004-12-29 | 哈尔滨工业大学 | Disperse type sewage treatment and recovery utilization method of strengthening city sewage pipeline purifying function |
| CN102190370A (en) * | 2010-03-04 | 2011-09-21 | 清华大学深圳研究生院 | Method for rapid elimination of water blackening and smell |
| CN108439616A (en) * | 2018-06-05 | 2018-08-24 | 上海同瑞环保工程有限公司 | A kind of microbial treatment method improving municipal rain pipe, confluence of rainwater and sewage pipe, rain dirt mixed flow tube or municipal wastewater pipe discharge water quality |
| CN208603838U (en) * | 2018-06-05 | 2019-03-15 | 上海同瑞环保工程有限公司 | Sewage conduct microbe treatment system |
-
2019
- 2019-10-12 CN CN201910965745.4A patent/CN110697978A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20103550U1 (en) * | 2001-02-28 | 2001-06-13 | Kronawitter Andreas | Floating gas vent for pond aeration |
| CN1557740A (en) * | 2004-01-14 | 2004-12-29 | 哈尔滨工业大学 | Disperse type sewage treatment and recovery utilization method of strengthening city sewage pipeline purifying function |
| CN102190370A (en) * | 2010-03-04 | 2011-09-21 | 清华大学深圳研究生院 | Method for rapid elimination of water blackening and smell |
| CN108439616A (en) * | 2018-06-05 | 2018-08-24 | 上海同瑞环保工程有限公司 | A kind of microbial treatment method improving municipal rain pipe, confluence of rainwater and sewage pipe, rain dirt mixed flow tube or municipal wastewater pipe discharge water quality |
| CN208603838U (en) * | 2018-06-05 | 2019-03-15 | 上海同瑞环保工程有限公司 | Sewage conduct microbe treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 中国市政工程协会: "《中国市政工程海绵城市建设实用技术手册》", 30 June 2017, 中国建材工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112250180B (en) | Device and method for realizing deep denitrification of domestic sewage by coupling half-shortcut nitrification-anaerobic ammonia oxidation with sulfur autotrophic denitrification | |
| CN109336325B (en) | Device and method for zero-emission treatment of late landfill leachate | |
| CN104350012A (en) | Internal-circulation aeration anammox-membrane bioreactor | |
| CN101885570A (en) | Sludge treatment method | |
| CN103449684A (en) | High-toxicity coking phenol-cyanogen waste water recycling system and method | |
| CN203582658U (en) | Multi-stage aeration reclaimed water treatment system for medium and small towns | |
| CN103951037B (en) | Utilize multi-environment microbial film-Sludge System integral type denitrogenation method and device | |
| CN212076760U (en) | Miniature bionic type integrated sewage treatment equipment | |
| CN111825216A (en) | System and process for treating high-COD high-ammonia nitrogen wastewater | |
| CN111348746A (en) | Miniature bionic type integrated sewage treatment equipment and sewage treatment method thereof | |
| CN217535571U (en) | UAD biological fluidized bed denitrification device based on sulfur autotrophy | |
| CN102153229A (en) | Process for treating high-concentration oil refining wastewater | |
| CN110697978A (en) | Method for improving purification capacity of drainage system | |
| CN212833044U (en) | Stirring device for anaerobic zone or anoxic zone of biochemical sewage treatment system | |
| CN212894108U (en) | System for handle high COD high ammonia nitrogen waste water | |
| CN108178299A (en) | A kind of waste water treatment system and its wastewater treatment method using SBR processing units | |
| CN205590517U (en) | Ozone - membrane bioreactor coking wastewater advanced treatment unit that pH control was adjusted | |
| CN115028267A (en) | Waste water recycling device | |
| CN212559882U (en) | Water quality purifying device | |
| CN205133243U (en) | Adopt circulation to make class processing and repair device that pollutes water | |
| CN105236575B (en) | It is a kind of that stream process is made using circulation and repairs the device and method of polluted-water | |
| CN203487013U (en) | Highly toxic coking phenol cyanogen waste water treatment and recycling system | |
| CN210656360U (en) | Landfill leachate anaerobic ammonia oxidation deep denitrification combined treatment device | |
| CN209853832U (en) | Device for treating sewage by using large-caliber sewage dry pipeline | |
| CN1169733C (en) | Batch Circulated upflow sludge bed organic waste water treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200117 |