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A treatment method for landfill leachate concentrated water

A landfill leachate and treatment method technology, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., can solve the problems of COD removal effect to be improved, removal rate is not high, etc., to improve COD removal rate, Effects of improving biochemical property and reducing biochemical burden

Active Publication Date: 2021-08-17
ZHEJIANG QICAI ECO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the removal rate of this method for refractory organic matter containing ammonia nitrogen is not high, the COD removal rate is about 60-70%, and the COD removal effect still needs to be improved

Method used

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  • A treatment method for landfill leachate concentrated water
  • A treatment method for landfill leachate concentrated water

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A method for treating landfill leachate concentrated water, the specific steps are as follows:

[0036]The concentrated water of the landfill leachate is stored in the concentrated water collection tank 1, and the sodium hypochlorite solution is stored in the sodium hypochlorite tank 2, and the concentration of the sodium hypochlorite solution is 11 wt%. Pump landfill leachate and sodium hypochlorite solution into reaction tank 3, the addition of sodium hypochlorite is 0.05wt% of total weight, carry out aeration treatment, aeration time is 30min; Add PAC in the landfill leachate concentrated water after aeration treatment , PAM flocculant for flocculation and sedimentation; then filter through filter press 4, transfer the filtered landfill leachate concentrated water into the transfer tank 5; then pump the filtered landfill leachate concentrated water into the pipeline mixer 6, and from The sodium hypochlorite solution in the sodium hypochlorite tank 2 is mixed, and the...

Embodiment 2

[0039] A method for treating landfill leachate concentrated water, the specific steps are as follows:

[0040] The concentrated water of the landfill leachate is stored in the concentrated water collection tank 1, and the sodium hypochlorite solution is stored in the sodium hypochlorite tank 2, and the concentration of the sodium hypochlorite solution is 11 wt%. The landfill leachate and the sodium hypochlorite solution are pumped into the reaction tank 3, the addition of sodium hypochlorite is 0.2wt% of the total weight, and the aeration treatment is carried out, and the aeration time is 30min; PAC is added to the concentrated water of the landfill leachate after the aeration treatment , PAM flocculant for flocculation and sedimentation; then filter through filter press 4, transfer the filtered landfill leachate concentrated water into the transfer tank 5; then pump the filtered landfill leachate concentrated water into the pipeline mixer 6, and from The sodium hypochlorite s...

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Abstract

The invention discloses a method for treating concentrated landfill leachate water. The method comprises the following steps: (1) pre-oxidation step: a certain amount of sodium hypochlorite is put into the concentrated water of the landfill leachate for aeration treatment; (2) catalytic oxidation step: the landfill leachate after the aeration treatment in step (1) is Concentrated water is mixed with sodium hypochlorite solution again, and the mixed solution is passed into the oxidation tower filled with heterogeneous catalyst. At the same time, ozone is passed into the oxidation tower in the form of microbubbles from the bottom of the oxidation tower through micropore aeration to carry out catalytic oxidation treatment. The invention effectively reduces the contents of ammonia nitrogen and refractory organic matter in concentrated landfill leachate water, greatly improves COD removal rate and B / C value, reduces biochemical burden, increases ozone utilization rate, and saves cost.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a method for treating concentrated landfill leachate water. Background technique [0002] With the continuous development of industry and agriculture, people's living standards are increasing day by day, and more and more garbage is produced, among which the landfill leachate is the most harmful. It is the secondary pollution produced by the landfill process, which can pollute water bodies, soil, the atmosphere, etc., make surface water bodies lack oxygen, deteriorate water quality, threaten drinking water and industrial and agricultural water sources, and make groundwater lose its use value. Organic pollutants in it Entering the food chain will directly threaten human health. Landfill leachate treatment is difficult, and its economical and effective treatment is a research hotspot in landfill treatment technology. [0003] Common methods for landfill leachate treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/76C02F1/78C02F9/04C02F101/30C02F101/20C02F101/16
CPCC02F1/5245C02F1/56C02F1/725C02F1/76C02F1/78C02F2101/16C02F2101/20C02F2101/30C02F2201/784C02F2209/08C02F2301/08C02F2303/02C02F2305/023
Inventor 江海云郑搏英钱枞诚吴小亮吴晓瑶
Owner ZHEJIANG QICAI ECO TECH CO LTD
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