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Method for processing CH4 in landfill site after acclimatizing and mineralizing garbage by utilizing percolate

A technology for mineralizing garbage and leachate, applied in the field of oxidation, can solve problems such as reducing methane concentration, and achieve the effect of avoiding pollution risks

Inactive Publication Date: 2011-02-09
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the invention: Aiming at the problem that the leachate and methane generated in the landfill are difficult to handle, the invention provides a CH 4 The method first uses the adsorption material to absorb toxic components such as organic pollutants and heavy metals in the landfill leachate, and retains high-concentration, water-soluble ammonia nitrogen components; the pre-treated landfill leachate is used to domesticate and cultivate the mineralized waste filler Set ammonium oxidizing bacteria; according to ammonium oxidizing bacteria on methane (CH 4 ) with the same oxidation ability to build CH in the overburden of domestic waste landfill 4 Oxygen layer, so that landfill leachate and methane can be well treated, reducing the concentration of methane

Method used

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  • Method for processing CH4 in landfill site after acclimatizing and mineralizing garbage by utilizing percolate
  • Method for processing CH4 in landfill site after acclimatizing and mineralizing garbage by utilizing percolate
  • Method for processing CH4 in landfill site after acclimatizing and mineralizing garbage by utilizing percolate

Examples

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Embodiment 1

[0022] Embodiment 1: The landfill leachate is lifted from the landfill leachate regulating tank 1 by pump force 2, and passes through the water distribution pipeline 3 to the adsorption material layer 4, and the adsorption material layer adopts activated carbon layer (25cm high) / macroporous adsorption resin from top to bottom Layer (model H103, 25cm high, Nankai University Chemical Plant), the water quality index of leachate is: COD cr =3000-8000mg / L, BOD 5 =1000-2000mg / L, NH 4 + -N=1350-2870mg / L, Fe 3+ =1200-2300mg / L, Pb 2+ =12-35mg / L, Zn 2+ =123-267mg / L, the hydraulic load of water distribution is 0.03~0.15m 3 / (m 3 Under the operating conditions of the adsorption material d), the effluent water quality is COD cr =800-2500mg / L, BOD 5 =500-1200mg / L, NH 4 + -N=950-2500mg / L, Fe 3+ =100-350mg / L, pb 2+ =2-5mg / L, Zn 2+ =18-35mg / L. After the power of the secondary pump, the effluent is lifted to the mineralized garbage packing layer 6 ( figure 1 ), the water distribu...

Embodiment 2

[0029] Embodiment 2: The landfill leachate regulating tank 1 is lifted by the pump force 2, and passes through the water distribution pipeline 3 to the adsorption material layer 4, and the adsorption material layer adopts an activated carbon layer (30cm high) / macroporous adsorption resin layer (model D3520) from top to bottom. , 20cm high, Nankai University chemical plant), the water quality index of leachate is: COD cr =3500-12000mg / L, BOD 5 =3700-4500mg / L, NH 4 + -N=1780-2670mg / L, Fe 3+ =1100-2500mg / L, Pb 2+ =16.5-35.3mg / L, Zn 2+ =167-285mg / L, the hydraulic load of leachate distribution is 0.01~0.03m 3 / (m 3 Under the operating conditions of the adsorption material d), the effluent water quality is COD cr =1100-4600mg / L, BOD 5 =800-1200mg / L, NH 4 + -N=950-2380mg / L, Fe 3+ =80-260mg / L, pb 2+ =4.5-7.8mg / L, Zn 2+ =21-29 mg / L. The effluent is lifted to the mineralized garbage packing layer 6 by the power of the secondary pump, and the water distribution load is 0.15...

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Abstract

The invention discloses a method for processing CH4 in a landfill site after acclimatizing and mineralizing garbage by utilizing a percolate, belonging to the field of a percolate processing and greenhouse gas emission reduction method in a landfill site. The method comprises the following steps: (1) lifting the percolate to an adsorption material layer, wherein the adsorption material layer comprises an active carbon layer and a macroporous resin layer, and the water distribution load is 0.05 to 0.50m<3> / (m<3>mineralized garbage.d); (2) lifting the effluent of the garbage percolate after processing to a mineralized garbage packing layer to be processed, wherein the water distribution load is 0.05 to 0.30m<3> / (m<3>mineralized garbage.d); and (3) adding a mineralized garbage layer after acclimatizing the garbage percolate obtained by carrying out the step (2) between a drainage layer and a vegetable layer or below the drainage layer in the construction of a final covering layer in the landfill site.The invention has the advantages that the garbage percolate is processed; the mineralized garbage is recycled; the toxicity is eliminated and ammonia nitrogen components are remained by preprocessing the percolate; the acclimatization and enrichment of ammonia oxidation bacteria are utilized to oxidize CH4; and the release total equivalent of greenhouse gas in the landfill site is reduced.

Description

technical field [0001] The invention relates to a method for treating landfill leachate and reducing the total amount of greenhouse gas emission in the landfill, more specifically, using the high concentration of ammonia nitrogen in the landfill leachate to realize the domestication of ammonium-oxidizing bacteria in mineralized waste and enrichment, based on ammonium oxidizing bacteria on methane (CH 4 ) of the same oxidation capacity, and then use the mineralized waste treated with enriched ammonium oxidizing bacteria to build a landfill overlay to oxidize CH4. Background technique [0002] Global warming has become a major environmental issue of concern to the world. The main greenhouse gases that need to be reduced in the "Kyoto Protocol" include: CO 2 、CH 4 and N 2 O. The statistical results of the Intergovernmental Panel on Climate Change in 2007 show that in 2004 CH 4 and N 2 O accounts for 14.3% and 7.9% of the total global anthropogenic greenhouse gas emission...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01D53/84C02F1/62B01D53/72C02F1/42B09B3/00
CPCY02C20/20Y02A50/20Y02W30/20
Inventor 张后虎张洪玲张毅吴睿孙庆窑蒯广东
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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