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Improved urban domestic garbage landfilling structure and landfilling treatment method

A technology of municipal solid waste and structures, which is applied in the field of landfill treatment, and can solve the problems of lack of methane recovery and utilization facilities

Inactive Publication Date: 2010-11-10
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most of the anaerobic landfills in my country at present, especially a large number of small and medium-sized urban domestic waste landfills, due to the lack of methane recycling facilities, they will face great difficulties in implementing the new standards, and there is an urgent need for effective Technologies for Landfill Methane Emission Reduction

Method used

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  • Improved urban domestic garbage landfilling structure and landfilling treatment method
  • Improved urban domestic garbage landfilling structure and landfilling treatment method
  • Improved urban domestic garbage landfilling structure and landfilling treatment method

Examples

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Effect test

Embodiment 1

[0046]The municipal solid waste landfill test was carried out in an indoor simulated landfill device from April 2006 to June 2007. The simulated landfill device was made of PVC material and fixed with a steel frame structure. In the landfill test, two treatments were set up, quasi-aerobic landfill and anaerobic landfill, and the size of the landfill structure was 1.0m×1.5m×1.8m. The waste for testing comes from municipal solid waste in Beijing Asuwei landfill, and its moisture, organic matter and ash contents are 52.9%, 48.3% and 51.7% respectively. The amount of garbage used in the landfill test is about 1600kg, and the compacted density of the landfill garbage is about 0.73t m -3 , the porosity is about 27.0%.

[0047] HDPE membranes are laid on the bottom of the quasi-aerobic landfill structure, and a leachate drainage layer (gravel, 50cm in thickness) is laid on the membrane, and a leachate drainage pipe (5cm in diameter) is laid in between. A vertical perforated air duc...

Embodiment 2

[0051] The municipal solid waste landfill test was carried out from November 2003 to October 2004 at the domestic waste landfill site in Jiujiang City, Jiangxi Province. The size of the landfill structure is 21m×3.8m×6.0m. The test material is urban domestic waste in Jiujiang City, and two treatments are set up, quasi-aerobic landfill and anaerobic landfill respectively. The amount of landfill waste is 250 tons, and the compaction density of landfill waste is about 0.52 tons / m 3 , the porosity is about 37.9%.

[0052] HDPE membranes are laid on the bottom of the quasi-aerobic landfill structure, and a leachate drainage layer (gravel, thickness 50cm) is laid on the membrane, and a corrugated pipe with a diameter of 0.2m is laid horizontally at the bottom of the landfill structure as the main leachate collection pipeline , The length of the leachate drainage pipe is about 22m. A gravel gabion is laid around the leachate drainage pipe for protection, and the diameter of the gabi...

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Abstract

The invention relates to an improved urban domestic garbage landfilling structure and a landfilling treatment method using the same. The improved urban domestic garbage landfilling structure comprises a clay liner, a polymer film, a geotextile and a percolate guiding and discharging layer, wherein the clay liner is laid on foundation soil; the polymer film is laid on the clay liner; the geotextile is laid on the polymer film; and the percolate guiding and discharging layer is laid on the geotextile, and a percolate guiding and discharging pipe is buried in the percolate guiding and discharging layer. The improved urban domestic garbage landfilling structure is characterized in that the tail end of the percolate guiding and discharging pipe is communicated with atmosphere, the percolate guiding and discharging pipe is also respectively connected with an opened horizontal air guiding pipe and an opened vertical air guiding pipe, and the horizontal air guiding pipe and the vertical air guiding pipe as well as a gabion for protecting the horizontal air guiding pipe and the vertical air guiding pipe all extend out of the garbage landfilling structure and then are communicated with the atmosphere. The invention is especially useful for the rapid stabilization of urban domestic garbage and the function of emission reduction of greenhouse gases CH4.

Description

technical field [0001] The invention relates to garbage landfill treatment, in particular to a landfill structure and a landfill treatment method for realizing rapid stabilization of urban domestic garbage and methane emission reduction. technical background [0002] The amount of municipal solid waste produced in my country is huge, and its clearing volume increased from 26.06 million tons in 1981 to 148.41 million tons in 2006, with an average annual growth rate of about 7.4% (China Urban Construction Statistical Yearbook, 2007). The components of municipal solid waste in my country have the characteristics of high moisture content and kitchen waste content, and low calorific value. The main methods of harmless disposal of municipal solid waste include landfill, incineration and composting, etc., combined with my country's national conditions and the characteristics of municipal solid waste, sanitary landfill technology will still be the harmless disposal method of Chinese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B1/00B09B5/00B09B3/00
Inventor 王琪董路黄启飞岳波黄泽春
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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