CN216236548U - Leachate treatment system for garbage transfer station - Google Patents
Leachate treatment system for garbage transfer station Download PDFInfo
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- CN216236548U CN216236548U CN202122395978.0U CN202122395978U CN216236548U CN 216236548 U CN216236548 U CN 216236548U CN 202122395978 U CN202122395978 U CN 202122395978U CN 216236548 U CN216236548 U CN 216236548U
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Abstract
The utility model discloses a leachate treatment system for a garbage transfer station, which sequentially comprises a pretreatment system, a physicochemical treatment system and a biochemical treatment system; the pretreatment system comprises an oil separation tank and a regulating tank; the physical and chemical treatment system is sequentially connected with a plurality of physical and chemical reaction tanks in series, sewage enters a sedimentation tank after physical and chemical treatment, supernatant enters a biochemical treatment system after solid-liquid separation in the sedimentation tank, and the biochemical treatment system adopts a two-stage A/MBR membrane tank to treat the sewage. The treatment system efficiently purifies the sewage through reasonable layout, effectively reduces the treatment cost of the percolate of the garbage transfer station, improves the production efficiency, has no odor, flammable and explosive gas in the treatment process, avoids secondary pollution, has no nanofiltration device or reverse osmosis device in the treatment mode, has no concentrated solution, has stable system water outlet, and can ensure that the outlet water reaches the water quality standard of sewage drainage town sewer GB/T31962 and 2015.
Description
Technical Field
The utility model relates to a leachate treatment system of a garbage transfer station.
Background
The difficulty is handled to rubbish transfer station filtration liquid, and the degree of difficulty mainly reflects: 1. the pollutant concentration is high, and the standard discharge difficulty is high; 2. the water quantity and the water quality of the percolate change greatly along with seasons and weather; 3. the garbage transfer station is in a small-sized and precious centralized residential area, and the requirement on the occupied area of a percolate treatment facility is high.
In recent years, although leachate treatment equipment appears in the market, the problems of high initial investment of the equipment, high installation cost, high running cost and the like during the use of the equipment exist, and the equipment is large in size, so that the leachate treatment equipment cannot enter and reside in certain garbage transfer stations. More importantly, the common leachate treatment equipment often adopts a reverse osmosis membrane concentration treatment process, so that pollutants cannot be thoroughly eliminated, and finally, a new problem of membrane concentrated solution pollution occurs.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a percolate treatment system of a garbage transfer station without a reverse osmosis device.
The technical scheme is as follows: the utility model relates to a leachate treatment system of a garbage transfer station, which sequentially comprises a pretreatment system, a physicochemical treatment system and a biochemical treatment system; the pretreatment system comprises an oil separation tank and a regulating tank; the physical and chemical treatment system is sequentially connected with a plurality of physical and chemical reaction tanks in series, sewage enters a sedimentation tank after physical and chemical treatment, supernatant enters a biochemical treatment system after solid-liquid separation in the sedimentation tank, and the biochemical treatment system adopts a two-stage A/MBR membrane tank to treat the sewage.
The front end of the oil separation tank is provided with a hydraulic screen, the garbage transfer station percolate enters the oil separation tank after being filtered by the hydraulic screen, flows into the regulating tank after being removed with grease impurities by the oil separation tank, and is added with a deodorant to remove the odor of sewage.
Wherein, the materialization reaction tank comprises a decoloration reaction tank, a neutralization reaction tank, a coagulation-aiding reaction tank and a flocculation reaction tank which are connected in series in sequence.
The method is characterized in that a decoloring agent is added into a decoloring reaction tank, sodium hydroxide is added into a neutralization reaction tank, a coagulant aid is added into a coagulant aid reaction tank, a flocculating agent PAM and a carbon source are added into a flocculation reaction tank, and suspended matters and chromaticity of landfill leachate are removed in a physicochemical reaction stage, so that the load of a subsequent biochemical process is greatly reduced, and the investment cost and the operation cost of the whole system are reduced.
Wherein, the sewage after the physicochemical treatment enters a sedimentation tank for flocculation and sedimentation again, solid-liquid separation is carried out through a sedimentation tank, the supernatant liquid overflows into an intermediate storage tank, and the sewage in the intermediate storage tank enters a biochemical treatment system through a lifting pump.
The sludge treatment device comprises a flocculation reaction tank, a sedimentation tank, an intermediate storage tank and an A/MBR membrane tank, wherein the flocculation reaction tank, the sedimentation tank, the intermediate storage tank and the A/MBR membrane tank are all discharged into the sludge tank, and sludge in the sludge tank is treated by a dehydrator to form sludge cakes to be transported outside.
Has the advantages that: the treatment system efficiently purifies the sewage through reasonable layout, effectively reduces the treatment cost of the percolate of the garbage transfer station, improves the production efficiency, has no odor, flammable and explosive gas in the treatment process, avoids secondary pollution, has no nanofiltration device or reverse osmosis device in the treatment mode, has no concentrated solution, has stable system water outlet, and can ensure that the outlet water reaches the water quality standard of sewage drainage town sewer GB/T31962 and 2015.
Drawings
FIG. 1 is a schematic diagram of a leachate treatment system of a refuse transfer station according to the present invention.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings.
As shown in fig. 1, the leachate treatment system of the refuse transfer station of the present invention sequentially comprises a pretreatment system 1, a physicochemical treatment system 2 and a biochemical treatment system 3; the pretreatment system 1 comprises an oil separation tank 11 and an adjusting tank 12, a hydraulic screen 13 is arranged at the front end of the oil separation tank 11, the garbage transfer station leachate is collected into the oil separation tank 11 after being filtered by the hydraulic screen 13, grease impurities are removed from the oil separation tank 11 and then the garbage transfer station leachate flows into the adjusting tank 12, a deodorant is added into the adjusting tank 12, and the sewage is pumped into the physicochemical treatment system 2 through a lifting pump after being homogenized and deodorized in the adjusting tank 12; the physicochemical treatment system 2 is sequentially connected in series with a plurality of physicochemical reaction tanks, the physicochemical reaction tanks are respectively a decoloring reaction tank 21, a neutralization reaction tank 22, a coagulation-assistant reaction tank 23 and a flocculation reaction tank 24, a decoloring agent is added into the decoloring reaction tank 21, sodium hydroxide is added into the neutralization reaction tank 22, a coagulant-assistant agent is added into the coagulation-assistant reaction tank 23, a flocculating agent PAM and a carbon source are added into the flocculation reaction tank 24, suspended matters and chromaticity in the landfill leachate are effectively removed in the physicochemical reaction stage, the load of a subsequent biochemical process is greatly reduced, and the investment cost and the operation cost of the whole system are reduced; the sewage enters a sedimentation tank 4 after physicochemical treatment, flocculation sedimentation is carried out in the sedimentation tank 4 again, solid-liquid separation is carried out through a sedimentation tank, the supernatant liquid overflows into an intermediate storage tank 5, the sewage in the intermediate storage tank 5 enters a biochemical treatment system 3 through a lift pump, and the biochemical treatment system 3 adopts a two-stage A/MBR membrane process to degrade most of COD and ammonia nitrogen in the garbage percolate, so that the effluent reaches the effluent water quality standard.
The percolate treatment system of the garbage transfer station also comprises a sludge tank 6, wherein the sludge in the flocculation reaction tank 24, the sedimentation tank 4, the intermediate storage tank 5 and the A/MBR membrane tank 31 is discharged into the sludge tank 6, and the sludge in the sludge tank 6 is treated by a dehydrator to form a sludge cake for outward transportation.
Claims (6)
1. The utility model provides a rubbish transfer station filtration liquid processing system which characterized in that: the treatment system sequentially comprises a pretreatment system (1), a physicochemical treatment system (2) and a biochemical treatment system (3); wherein the pretreatment system (1) comprises an oil separation tank (11) and a regulating tank (12); the physical and chemical treatment system (2) is sequentially connected with a plurality of physical and chemical reaction tanks in series, sewage enters the sedimentation tank (4) after physical and chemical treatment, supernatant enters the biochemical treatment system (3) after solid-liquid separation in the sedimentation tank (4), and the biochemical treatment system (3) adopts a two-stage A/MBR membrane tank (31) to treat the sewage.
2. The leachate treatment system of the refuse transfer station of claim 1, wherein: the front end of the oil separation tank (11) is provided with a hydraulic screen (13), the leachate of the garbage transfer station enters the oil separation tank (11) after being filtered by the hydraulic screen (13), the leachate flows into the regulating tank (12) after being removed of grease impurities by the oil separation tank (11), and a deodorant is added into the regulating tank (12) to remove the odor of the sewage.
3. The leachate treatment system of the refuse transfer station of claim 1, wherein: the physical and chemical reaction tank comprises a decolorization reaction tank (21), a neutralization reaction tank (22), a coagulation-aiding reaction tank (23) and a flocculation reaction tank (24) which are connected in series in sequence.
4. The leachate treatment system of the refuse transfer station according to claim 3, wherein: a decoloring agent is added into the decoloring reaction tank (21), sodium hydroxide is added into the neutralization reaction tank (22), a coagulant aid is added into the coagulant aid reaction tank (23), and a flocculating agent PAM and a carbon source are added into the flocculation reaction tank (24).
5. The leachate treatment system of the refuse transfer station according to claim 3, wherein: and the sewage after the physicochemical treatment enters a sedimentation tank (4) for flocculation sedimentation again, solid-liquid separation is carried out through a sedimentation tank, the supernatant liquid overflows into an intermediate storage tank (5), and the sewage in the intermediate storage tank (5) enters a biochemical treatment system (3) through a lifting pump.
6. The leachate treatment system of the refuse transfer station of claim 5, wherein: the device also comprises a sludge tank (6), and sludge in the flocculation reaction tank (24), the sedimentation tank (4), the intermediate storage tank (5) and the A/MBR membrane tank (31) is discharged into the sludge tank (6).
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CN202122395978.0U CN216236548U (en) | 2021-09-30 | 2021-09-30 | Leachate treatment system for garbage transfer station |
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CN202122395978.0U CN216236548U (en) | 2021-09-30 | 2021-09-30 | Leachate treatment system for garbage transfer station |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115196822A (en) * | 2022-06-28 | 2022-10-18 | 福建坤净生环保科技有限公司 | Novel disposal method of reverse osmosis concentrated solution of garbage |
CN115974300A (en) * | 2022-11-16 | 2023-04-18 | 长沙绿荫科技研究院有限公司 | Garbage leachate full-quantitative treatment combined process |
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2021
- 2021-09-30 CN CN202122395978.0U patent/CN216236548U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115196822A (en) * | 2022-06-28 | 2022-10-18 | 福建坤净生环保科技有限公司 | Novel disposal method of reverse osmosis concentrated solution of garbage |
CN115974300A (en) * | 2022-11-16 | 2023-04-18 | 长沙绿荫科技研究院有限公司 | Garbage leachate full-quantitative treatment combined process |
CN115974300B (en) * | 2022-11-16 | 2023-11-10 | 长沙绿荫科技研究院有限公司 | Combined process for full quantization treatment of landfill leachate |
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