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Purification system and purification method for biochemical effluent of landfill leachate treatment

A technology for landfill leachate and biochemical effluent, which is applied in the treatment of polluted groundwater/leachate, filtration treatment, chemical instruments and methods, etc., and can solve the problems of concentrated liquid recharge, complex treatment process, and large consumption of chemical agents. , to achieve the effect of reducing investment and shortening process flow

Pending Publication Date: 2022-01-25
张世文
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects of the existing landfill leachate treatment technology, such as complicated treatment process, large consumption of chemical agents, high cost, refilling of the treated concentrated solution, etc. Electrolytic denitrification device, secondary biochemical treatment device and coagulation sedimentation purification device are combined to form a biochemical effluent purification system and purification method for garbage seepage treatment

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  • Purification system and purification method for biochemical effluent of landfill leachate treatment
  • Purification system and purification method for biochemical effluent of landfill leachate treatment
  • Purification system and purification method for biochemical effluent of landfill leachate treatment

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Embodiment 1

[0059] The biochemical effluent purification device for the landfill leachate treatment in a certain city constructed by the production process of the present invention comprises a primary biochemical effluent device (10), a hardness removal device (100), and a catalytic electrolysis denitrification device (200) . The secondary biochemical treatment device (300) and the coagulation sedimentation purification device (400). The secondary biochemical units are anaerobic and aerobic units (AO).

[0060] Table 2. Inlet and outlet water quality indicators of biochemical effluent design for landfill leachate treatment

[0061] serial number project Biochemical effluent index The water output index after treatment Removal rate (%) 1 Chroma 80 40 50.00 2 COD Cr (mg / L)

1000 90 3 Total Nitrogen (mg / L) 950 40 4 Ammonia nitrogen (mg / L) 890 25 5 Total phosphorus (mg / L) 7.2 3 6 Hardness (mg / L) 720 3

[0062...

Embodiment 2

[0085] The purification device for the MBR effluent treated by the landfill leachate in a certain city constructed by the production process of the present invention includes a primary biochemical water effluent device (10), a hardness removal device (100), and a catalytic electrolysis denitrification device (200) , a secondary biochemical treatment device (300) and a coagulation sedimentation purification device (400). The secondary biochemistry is composed of an aerobic pool (310), a denitrification deep bed filter (320) and an intermediate water pool (330).

[0086] Table 7. Inlet and outlet water quality indicators of biochemical effluent design for landfill leachate treatment

[0087] serial number project Biochemical effluent index The water output index after treatment Removal rate (%) 1 Chroma 100 40 60.00 2 COD Cr (mg / L)

1200 100 91.67 3 BOD 5 (mg / L)

500 20 96.00 3 Total Nitrogen (mg / L) 1000 30 97.00 4 ...

Embodiment 3

[0110] The biochemical effluent purification device for the 300 tons / day garbage leachate treatment of a city garbage landfill built by the production process of the present invention includes a primary biochemical effluent device (10), a hardness removal device (100), a catalytic electrolytic denitrification device The device (200), the secondary biochemical treatment device (300), and the coagulation sedimentation purification device (400). The secondary biochemical device (300) is composed of an anaerobic pool (310), an MBR pool (320) and an intermediate water pool (330).

[0111] Table 12. Inlet and outlet water quality indicators for biochemical effluent design of landfill leachate treatment

[0112] serial number project Biochemical effluent index The water output index after treatment Removal rate (%) 1 Chroma 300 5 98.33 2 COD Cr (mg / L)

[0113] The purification device for the biochemical effluent treated with the above landfill leach...

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Abstract

The invention discloses a purification system and a purification method for biochemical effluent of landfill leachate treatment. The purification system comprises a primary biochemical effluent device of landfill leachate, a hardness removal device, a catalytic electrolysis denitrification device, a secondary biochemical treatment device and a coagulating sedimentation purification device. After biochemical effluent of landfill leachate treatment is sequentially subjected to hardness removal, catalytic electrolysis denitrification, secondary biochemical treatment and coagulating sedimentation purification, the effluent reaches the standard of the Control Standard for Pollutants in the Landfill Site of Municipal Solid Waste (GB16889-2008), and no concentrated solution exists, so that the systme and the method are particularly suitable for transformation of the existing landfill leachate treatment plant.

Description

technical field [0001] The invention relates to a purification system and purification method for landfill leachate treatment, in particular to a purification system and purification method for biochemical effluent from landfill leachate treatment. All indicators of Pollution Control Standards (GB16889-2008), without concentrate, belong to the field of environmental protection. Background technique [0002] Landfill leachate is a kind of high ammonia nitrogen, high COD organic wastewater, which is mainly from the following three aspects: 1. The water released by the fermentation and decomposition of microorganisms after landfill; 2. The water contained in the garbage itself is separated out; 3. The natural rainfall and runoff in the landfill and the infiltration of groundwater. The typical values ​​of pollutant content in urban landfill leachate are shown in Table 1. [0003] Table 1 Main components of general landfill leachate (except for pH and sensory indicators, the un...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16C02F101/22C02F101/30C02F103/06
CPCC02F9/00C02F1/461C02F3/30C02F2001/007C02F1/001C02F1/38C02F1/70C02F2303/14C02F1/66C02F2103/06C02F1/56C02F1/5236C02F2101/16C02F2101/22C02F2101/30
Inventor 张世文
Owner 张世文
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