Method for full-amount treatment of landfill leachate

A desalter and magnetoelectric technology, applied in the field of full-scale treatment of landfill leachate, can solve problems such as difficult discharge standards, secondary pollution, and low degradation ability, and achieve the effects of reducing treatment costs, less investment, and shorter time

Pending Publication Date: 2022-06-03
GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From many research examples, it is difficult to treat the leachate to meet the relevant discharge standards by the process of neutralization and stripping-biochemical method. If ammonia is not recycled, it will cause secondary pollution

Method used

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  • Method for full-amount treatment of landfill leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The use of electro-flocculation and magneto-electric desalinator 3 is used to carry out the full quantitative treatment of domestic waste landfill landfill infiltration. The water quality is as follows: pH value is 7, COD Cr 4240mg / L, ammonia nitrogen 2800mg / L, chloride 8500mg / L, BOD 5 It is 2980.0mg / L, and TDS is 15000mg / L. Experimental results: After 24 hours of operation, the total quantification treatment rate of wastewater was 99.9%, the average removal rate of CODcr was 99.9%, the average removal rate of ammonia nitrogen was 99.9%, and the average removal rate of TDS was 99.9%, and the equipment was running stably.

Embodiment 2

[0036] The use of electro-flocculation and magneto-electric desalinator 3 to carry out full-quantification treatment of waste incineration power plant landfill infiltration. The water quality is as follows: pH value is 7, COD Cr 3360mg / L, ammonia nitrogen 3600mg / L, chloride 7300mg / L, BOD 5 is 3520.0 mg / L, and TDS is 8100 mg / L. Experimental results: After 24 hours of operation, the total quantification treatment rate of wastewater was 99.9%, the average removal rate of CODcr was 99.8%, the average removal rate of ammonia nitrogen was 99.8%, and the average removal rate of TDS was 99.9%, and the equipment was running stably.

Embodiment 3

[0038] The use of electro-flocculation and magneto-electric desalinator 3 to carry out full-scale treatment of landfill infiltration of hazardous waste. The water quality is as follows: pH value is 9, COD Cr is 38590mg / L, ammonia nitrogen is 6710mg / L, chloride is 23900mg / L, BOD 5 is 880.0 mg / L, and TDS is 76300 mg / L. Experimental results: After 24 hours of operation, the total quantification treatment rate of wastewater was 99.9%, the average removal rate of CODcr was 99.9%, the average removal rate of ammonia nitrogen was 99.8%, and the average removal rate of TDS was 99.8%, and the equipment was running stably.

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Abstract

The invention discloses a method for full-amount treatment of landfill leachate, and belongs to the technical field of wastewater treatment. The method comprises the following steps: 1) removing turbidity of high-salinity wastewater to adjust the pH value to 4-5, and enabling the high-salinity wastewater to enter a raw water adjusting tank to stabilize the water amount and the water quality; (2) enabling effluent of the raw water regulating tank to pass through an electric flocculation reactor, and enabling backwashing water of the electric flocculation reactor to flow back to the raw water regulating tank; 3) feeding effluent of the electric flocculation reactor into a magneto-electric desalter; (4) discharging the effluent of the magneto-electric desalter after reaching the standard; and 5) regularly scraping solid crystal residues in the magnetoelectric desalter. According to the scheme, the electric flocculation reactor and the magneto-electric desalter are combined for use, so that full-amount treatment of the landfill leachate can be effectively realized.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for the full amount of landfill leachate treatment. Background technique [0002] Landfill leachate is a difficult-to-treat high-concentration organic wastewater, which is characterized by large fluctuations in water quality and quantity, complex components, and high content of toxic and harmful substances. The treatment of landfill leachate has become a major subject of environmental pollution control in my country at present and for a long time in the future (Shen Huan, Jin Qiting, Cui Xiqin, et al. Experimental study on the treatment of urban landfill leachate with an up-flow anaerobic sludge bed [J] ]. Environmental Pollution Control Technology and Equipment, 2004, 5(4): 1-5). Among them, the content of ammonia nitrogen in landfill leachate is high, which is more difficult to deal with. At present, the research on new technology of leachate denitrificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F1/44C02F1/463C02F1/66C02F1/48C02F103/06
CPCC02F9/00C02F1/66C02F1/463C02F1/445C02F1/48C02F2103/06C02F2201/48C02F2201/46C02F2209/06C02F2209/08C02F2209/14C02F2209/29C02F2209/10Y02W10/10
Inventor 刘伟刘滨王涛
Owner GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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