CN112159030A - Novel leachate treatment system - Google Patents
Novel leachate treatment system Download PDFInfo
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- CN112159030A CN112159030A CN202010951271.0A CN202010951271A CN112159030A CN 112159030 A CN112159030 A CN 112159030A CN 202010951271 A CN202010951271 A CN 202010951271A CN 112159030 A CN112159030 A CN 112159030A
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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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- 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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- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- 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)
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a novel leachate treatment system, which comprises a pretreatment system, a biochemical system and a membrane treatment system, wherein the pretreatment system is sequentially provided with two bag filters and a vertical flow sedimentation tank, the biochemical system is sequentially provided with two anaerobic tanks, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and an external MBR (membrane bioreactor) water inlet tank, and the membrane treatment system is sequentially provided with an UF (micro aeration) system, an NF (nitrogen oxide) system, an RO (reverse osmosis) system and a clean water tank. The invention has the advantages that: the volume of the regulating tank is maximized according to the relevant design rule, and the regulating tank is suitable for sudden adjustment of a percolate anaerobic system in rainy seasons in summer; the biochemical system is provided with a multistage anoxic tank and an aerobic tank, the aerobic tank is connected with a carbon source supplementing pipe from the regulating tank, TN can be effectively removed, and the situations that dissolved oxygen in the secondary anoxic tank is difficult to control and the dissolved oxygen is wasted are avoided; the DTRO concentrated solution decrement system of the membrane treatment system is provided with a pipeline for producing water by ultrafiltration, which is beneficial to increasing the yield by sudden impact in summer and reducing the operation pressure.
Description
Technical Field
The invention relates to the technical field of leachate treatment, in particular to a novel leachate treatment system.
Background
Along with the rapid development of social economy, the living standard of people is increasingly improved, and the urban domestic garbage yield in China is increasingly increased. At present, landfill, incineration, composting and the like are main treatment methods of municipal domestic waste. The sanitary landfill method has the advantages of large treatment capacity, wide application range, simple process, lower cost, mature technology and the like, and becomes a recognized garbage disposal technology. In the process of landfill, a large amount of landfill leachate which has strong pollution and is difficult to degrade is generated due to the moisture carried by the garbage, the decomposition of organic matters during anaerobic decomposition, underground water soaking, rainwater leaching and the like, wherein the landfill leachate contains a large amount of organic matters and ammonia nitrogen, so the landfill leachate has to be treated necessarily to avoid polluting the ecological environment.
In the north, the water quantity is less in winter, the rainfall is large in summer, summer treatment cannot be easily caused, the environmental protection pressure is high, the water outlet requirement is strict, and the process needs to be properly adjusted due to excessive foam of the percolate treatment characteristic.
Disclosure of Invention
In order to solve the problems, the invention provides a novel leachate treatment system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a novel leachate treatment system comprises a pretreatment system, a biochemical system and a membrane treatment system, wherein the pretreatment system is sequentially provided with two bag filters and a vertical flow sedimentation tank, the vertical flow sedimentation tank is connected with a first adjusting tank, a second adjusting tank and an accident tank, four submersible pumps are arranged in the first adjusting tank and the second adjusting tank, two centrifugal pumps are arranged in the first adjusting tank and used for feeding water into an anaerobic tank, the volume of the first adjusting tank is the maximum value according to related design rules, and the second adjusting tank and the adjusting tank share a centrifugal pump and used for feeding water into the anaerobic tank;
the biochemical system is sequentially provided with two anaerobic tanks, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and an external MBR water inlet tank, the first regulating tank and the second regulating tank are connected with the two anaerobic tanks, a nitrifying liquid reflux device is arranged between the primary anoxic tank and the secondary aerobic tank, nitrifying liquid flows into the primary anoxic tank from the secondary aerobic tank, a carbon source supplementing system is arranged between the first regulating tank and the second regulating tank and between the primary anoxic tank and the secondary anoxic tank, and carbon sources flow into the primary anoxic tank and the secondary anoxic tank from the first regulating tank and the second regulating tank;
the membrane treatment system is sequentially provided with an UF system, an NF system, an RO system and a clean water tank, wherein NF concentrated solution and RO concentrated solution generated by the NF system and the RO system respectively flow to the concentrated water tank, the concentrated water tank sends water to the DTRO system through the DTRO concentrated solution decrement system, part of UF water generated by the UF system flows into the DTRO system, clean water in the DTRO system flows into the clean water tank, and the concentrated solution is recycled by owners.
As an improvement, a screw sludge discharge pump is arranged in the vertical flow sedimentation tank.
As an improvement, an accident pump is arranged in the accident pool.
As an improvement, a pipeline for producing water through ultrafiltration is additionally arranged in the DTRO concentrated solution decrement system.
The invention has the advantages that: the volume of the regulating tank is maximized according to the relevant design rule, and the regulating tank is suitable for sudden adjustment of a percolate anaerobic system in rainy seasons in summer; the biochemical system is provided with a multistage anoxic tank and an aerobic tank, the aerobic tank is connected with a carbon source supplementing pipe from the regulating tank, TN can be effectively removed, and the conditions that the dissolved oxygen of the secondary anoxic tank is difficult to control, the foam is high and the dissolved oxygen is wasted are avoided; the DTRO concentrated solution decrement system of the membrane treatment system is provided with a pipeline for producing water by ultrafiltration, which is beneficial to increasing the yield by sudden impact in summer and reducing the operation pressure. Through tests, the water quality is good, and the water yield is obviously improved in a short time.
Drawings
FIG. 1 is a diagram of a pretreatment system of a novel leachate treatment system of the present invention.
FIG. 2 is a diagram of a biochemical system of a novel leachate treatment system of the present invention.
Figure 3 is a membrane treatment system diagram of a novel leachate treatment system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A novel leachate treatment system comprises a pretreatment system, a biochemical system and a membrane treatment system, wherein the pretreatment system is sequentially provided with two bag filters and a vertical flow sedimentation tank, the vertical flow sedimentation tank is connected with a first adjusting tank, a second adjusting tank and an accident tank, four submersible pumps are arranged in the first adjusting tank and the second adjusting tank, two centrifugal pumps are arranged in the first adjusting tank and used for feeding water into an anaerobic tank, the volume of the first adjusting tank is the maximum value according to related design rules, and the second adjusting tank and the adjusting tank share a centrifugal pump and used for feeding water into the anaerobic tank;
the biochemical system is sequentially provided with two anaerobic tanks, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and an external MBR water inlet tank, the first regulating tank and the second regulating tank are connected with the two anaerobic tanks, a nitrifying liquid reflux device is arranged between the primary anoxic tank and the secondary aerobic tank, nitrifying liquid flows into the primary anoxic tank from the secondary aerobic tank, a carbon source supplementing system is arranged between the first regulating tank and the second regulating tank and between the primary anoxic tank and the secondary anoxic tank, and carbon sources flow into the primary anoxic tank and the secondary anoxic tank from the first regulating tank and the second regulating tank;
the membrane treatment system is sequentially provided with an UF system, an NF system, an RO system and a clean water tank, wherein NF concentrated solution and RO concentrated solution generated by the NF system and the RO system respectively flow to the concentrated water tank, the concentrated water tank sends water to the DTRO system through the DTRO concentrated solution decrement system, part of UF water generated by the UF system flows into the DTRO system, clean water in the DTRO system flows into the clean water tank, and the concentrated solution is recycled by owners.
And a screw sludge discharge pump is arranged in the vertical sedimentation tank.
The accident pool is internally provided with an accident pump.
And a pipeline for ultrafiltration water production is additionally arranged in the DTRO concentrated solution decrement system.
The working principle of the invention is as follows: the inlet water firstly passes through two bag filters and then enters a vertical flow sedimentation tank for sedimentation, sludge is discharged to a sludge storage tank by a screw sludge discharge pump, sewage enters a regulating tank I and a regulating tank II, four submersible pumps are arranged in the regulating tank I and the regulating tank II, a centrifugal pump is shared, wherein, the volume of the regulating tank takes the maximum value according to the relevant design rule, is suitable for the condition of overlarge flow in summer, the sewage in the first regulating pool and the second regulating pool sequentially enters two anaerobic tanks, a first-stage anoxic pool, a first-stage aerobic pool, a second-stage anoxic pool and a second-stage aerobic pool, the first regulating pool and the second regulating pool supplement carbon sources to the first-stage anoxic pool and the second-stage anoxic pool by utilizing a carbon source supplement system, TN can be effectively removed, meanwhile, the conditions that the dissolved oxygen in the secondary aerobic tank is difficult to control, the amount of foam is high, and the dissolved oxygen is wasted are avoided, when the water yield of the UF system is high, the ultrafiltration water yield is directly treated, and the treatment capacity of the membrane treatment system can be improved in a short time.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The utility model provides a novel leachate treatment system, it includes pretreatment systems, biochemical system and membrane processing system, its characterized in that: the pretreatment system is sequentially provided with two bag filters and a vertical flow type sedimentation tank, the vertical flow type sedimentation tank is connected with a first adjusting tank, a second adjusting tank and an accident tank, four submersible pumps are arranged in the first adjusting tank and the second adjusting tank, two centrifugal pumps are arranged in the first adjusting tank and are used for feeding water into the anaerobic tank, the volume of the first adjusting tank and the volume of the second adjusting tank are the maximum value according to related design rules, and the second adjusting tank and the adjusting tank share one centrifugal pump and are used for feeding water into the anaerobic tank;
the biochemical system is sequentially provided with two anaerobic tanks, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank and an external MBR water inlet tank, the first regulating tank and the second regulating tank are connected with the two anaerobic tanks, a nitrifying liquid reflux device is arranged between the primary anoxic tank and the secondary aerobic tank, nitrifying liquid flows into the primary anoxic tank from the secondary aerobic tank, a carbon source supplementing system is arranged between the first regulating tank and the second regulating tank and between the primary anoxic tank and the secondary anoxic tank, and carbon sources flow into the primary anoxic tank and the secondary anoxic tank from the first regulating tank and the second regulating tank;
the membrane treatment system is sequentially provided with an UF system, an NF system, an RO system and a clean water tank, wherein NF concentrated solution and RO concentrated solution generated by the NF system and the RO system respectively flow to the concentrated water tank, the concentrated water tank sends water to the DTRO system through the DTRO concentrated solution decrement system, part of UF water generated by the UF system flows into the DTRO system, clean water in the DTRO system flows into the clean water tank, and the concentrated solution is recycled by owners.
2. The novel leachate treatment system of claim 1, wherein: and a screw sludge discharge pump is arranged in the vertical sedimentation tank.
3. The novel leachate treatment system of claim 1, wherein: the accident pool is internally provided with an accident pump.
4. The novel leachate treatment system of claim 1, wherein: and a pipeline for ultrafiltration water production is additionally arranged in the DTRO concentrated solution decrement system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951271.0A CN112159030A (en) | 2020-09-11 | 2020-09-11 | Novel leachate treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951271.0A CN112159030A (en) | 2020-09-11 | 2020-09-11 | Novel leachate treatment system |
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| CN112159030A true CN112159030A (en) | 2021-01-01 |
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Citations (10)
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|---|---|---|---|---|
| US4808287A (en) * | 1987-12-21 | 1989-02-28 | Hark Ernst F | Water purification process |
| CN203653393U (en) * | 2014-01-01 | 2014-06-18 | 浙江四通环境工程有限公司 | Landfill leachate treatment device |
| CN203668142U (en) * | 2013-12-30 | 2014-06-25 | 天津生态城水务投资建设有限公司 | Water RO (reverse osmosis) treatment system adopting low-pressure system to replace high-pressure system in production |
| CN106565054A (en) * | 2016-08-31 | 2017-04-19 | 北京安国水道自控工程技术有限公司 | Village and town wastewater advanced treatment integrated device and method |
| CN108373238A (en) * | 2018-04-09 | 2018-08-07 | 广州华浩能源环保集团股份有限公司 | A kind of landfill leachate concentration liquid zero-discharge treatment system and technique |
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| CN109879572A (en) * | 2019-04-08 | 2019-06-14 | 重庆港力环保股份有限公司 | Landfill leachate advanced purification process system |
| CN209128261U (en) * | 2018-11-08 | 2019-07-19 | 浙江滨盛环境科技有限公司 | A kind of landfill leachate treatment Zero discharging system |
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-
2020
- 2020-09-11 CN CN202010951271.0A patent/CN112159030A/en active Pending
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| CN203653393U (en) * | 2014-01-01 | 2014-06-18 | 浙江四通环境工程有限公司 | Landfill leachate treatment device |
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| CN108373238A (en) * | 2018-04-09 | 2018-08-07 | 广州华浩能源环保集团股份有限公司 | A kind of landfill leachate concentration liquid zero-discharge treatment system and technique |
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Application publication date: 20210101 |