Biogas and leachate integrated pumping and drainage system for garbage landfill

A landfill and biogas technology, which is applied to waterway systems, sewage discharge, drainage structures, etc., can solve the problems of poor permeability of waste bodies, unsatisfactory biogas and leachate pumping effects, etc., and achieve post-maintenance Convenient management, convenient adjustment and processing, and convenient construction
CN1995568AInactive Publication Date: 2007-07-11CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2007-07-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to an integrated drainage system for landfill biogas and leachate. Before the landfill is used, the shaft well is finished. Multi-level and multi-branch collection and drainage passages connected with the shaft well are put from bottom to top in turn as rubbish landfill operation carries. Gravels with air and water guide are filled in collection and drainage passages and the angle alpha between multi-branch collection and drainage passage and the level of shaft well enlarges gradually from bottom to top. There is no sealing cover for shaft well and drainage device, which can drain biogas and leachate, is set in it. By multi-level multi-branch collection and drainage passage, which are put with layered radial pattern and with certain angle of the level, air and water permeability in rubbish is improved so that gas-liquid integrated collection and conduction are carried. As multi-level multi-branch collection and drainage passages with diverging pattern gather to the center of shaft well, accumulation of biogas and leachate is realized so as to be convenience for drainage. The whole system is provided with simple structure, high collection efficiency for biogas and leachate, convenience construction, low project cost, convenience later maintenance and management.
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Description

technical field

[0001] The invention relates to a garbage landfill system, in particular to a garbage landfill multi-branch biogas and leachate integrated pumping and drainage system. Background technique

[0002] At present, biogas and leachate in landfills are pumped independently: biogas is pumped through pre-buried drainage pipes or vertical holes are drilled after the site is closed, and leachate is pumped from the bottom of the landfill. After the blind ditch is collected, it enters the liquid collection well and is pumped out. This independent pumping method requires separate engineering construction, and as the waste degrades, the particles in the leachate block the migration channels of gas and liquid, and the permeability of the waste body deteriorates, resulting in the extraction of biogas and leachate. The discharge effect becomes less than ideal. Contents of the invention

[0003] The purpose of the present invention is to overcome the existing problems in t...

Claims

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