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Method for treating leachate of garbage transfer station

A waste transfer station and treatment method technology, which is applied in the field of leachate treatment of waste transfer stations, can solve the problems of inconvenient operation and management, increased operating costs, and high investment costs, and achieve improved treatment quality, treatment effect and quality, and improved treatment efficiency effect

Inactive Publication Date: 2019-07-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the leachate treatment of the transfer station generally uses membrane treatment technology. Although the effect of membrane treatment is acceptable, the investment cost of this process is relatively high, and it is easy for the transfer station leachate with high pollutant concentration. The formation of membrane fouling will bring inconvenience to operation and management, and the cleaning and replacement of the membrane will also increase the operating cost

Method used

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  • Method for treating leachate of garbage transfer station

Examples

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Comparison scheme
Effect test

Embodiment 1

[0071] The leachate of the garbage transfer station has a daily treatment capacity of 5 tons, a COD content of 7500 mg / L, an ammonia nitrogen content of 160 mg / L, a total phosphorus content of 120 mg / L, a suspended solid concentration of 305 mg / L, and a pH of 5.4.

[0072] According to the leachate characteristics of the above garbage transfer station, the technical solutions include:

[0073] S1. The leachate generated by the garbage transfer station first passes through the screen machine to separate high-concentration suspended solids and pollutants with large particle sizes in the water body, and then flows into the regulating tank.

[0074] S2. The wastewater from the regulating tank enters the biochemical system through the lift pump.

[0075] S3. The effluent from the biochemical system flows into the sedimentation tank.

[0076] S4. The effluent from the sedimentation tank flows into the coagulation dosing and coagulation sedimentation unit. After coagulation and sedi...

Embodiment 2

[0086] The leachate of the garbage transfer station has a daily treatment capacity of 20t, a COD content of 16650mg / L, an ammonia nitrogen content of 280mg / L, a total phosphorus content of 270mg / L, a suspended solid concentration of 445mg / L, and a pH of 6.

[0087] According to the leachate characteristics of the above garbage transfer station, the technical solutions include:

[0088] S1. The leachate generated by the garbage transfer station first passes through the screen machine to separate high-concentration suspended solids and pollutants with large particle sizes in the water body, and then flows into the regulating tank.

[0089] S2. The wastewater from the regulating tank enters the biochemical system through the lift pump.

[0090] S3. The effluent from the biochemical system flows into the sedimentation tank.

[0091] S4. The effluent from the sedimentation tank flows into the coagulation dosing and coagulation sedimentation unit, and after coagulation and sediment...

Embodiment 3

[0101] The leachate of the garbage transfer station has a daily treatment capacity of 50t, a COD content of 28500mg / L, an ammonia nitrogen content of 450mg / L, a total phosphorus content of 320mg / L, a suspended solid concentration of 530mg / L, and a pH of 6.5.

[0102] According to the leachate characteristics of the above garbage transfer station, the technical solutions include:

[0103] S1. The leachate generated by the garbage transfer station first passes through the screen machine to separate high-concentration suspended solids and pollutants with large particle sizes in the water body, and then flows into the regulating tank.

[0104] S2. The wastewater from the regulating tank enters the biochemical system through the lift pump.

[0105] S3. The effluent from the biochemical system flows into the sedimentation tank.

[0106] S4. The effluent from the sedimentation tank flows into the coagulation dosing and coagulation sedimentation unit, and after coagulation and sediment...

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Abstract

The invention relates to a method for treating leachate of a garbage transfer station, which solves the technical problems of low treatment efficiency and the like in the prior art. The method for treating the leachate of the garbage transfer station comprises the following steps: S1, the leachate generated in the garbage transfer station sequentially passes through a grating machine and an regulating tank, wherein the grating machine separates high-concentration suspended matters and pollutants with larger particle sizes in the water body; S2, the leachate treated by the regulating tank enters a biochemical system through a lifting pump, and the biochemical system carries out biochemical reaction treatment on the leachate by adopting a biological contact oxidation method; S3, the leachateprocessed by the biochemical system automatically flows into a sedimentation tank, the sedimentation tank precipitates the leachate, and the precipitated sludge is discharged out of the sedimentationtank; S4, the leachate of the sedimentation tank flows into a coagulation medicine adding tank and a coagulation sedimentation tank in sequence, the water after coagulation sedimentation flows into an active carbon tank, and the percolate is directly discharged after being adsorbed and filtered by the active carbon tank. The method has the advantages that the cost is low, and the emission standard can be reached after treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a treatment method for leachate of a garbage transfer station. Background technique [0002] The main sources of sewage in the garbage transfer station are domestic sewage, flushing wastewater and landfill leachate, and the treatment is mainly to treat the leachate produced in the process of waste extrusion and loading. Landfill leachate contains a large amount of pollutants. If it is not treated, it will seriously pollute the surrounding environment. It will have a bad impact on groundwater, surface water sources, soil, surrounding animals and plants, and even threaten the health of the general public. Therefore, landfill leachate must be treated effectively to minimize its impact on the environment. [0003] At present, the leachate treatment of the transfer station generally uses membrane treatment technology. Although the effect of membrane treat...

Claims

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Application Information

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IPC IPC(8): C02F11/122C02F9/14C02F103/06C02F101/16
CPCC02F1/001C02F1/281C02F1/5236C02F3/30C02F9/00C02F11/122C02F2001/007C02F2101/16C02F2103/06
Inventor 韩伟方俊何凡
Owner HANGZHOU DIANZI UNIV
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