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Integrated type semi-aerobic stabilizing and integrating system for refuse landfill and application thereof

A landfill and integrated system technology, which is applied in the field of quasi-aerobic stable integrated system of comprehensive garbage landfill, can solve the problems of air pollution around the landfill, slow garbage stabilization rate, and low void ratio of the landfill layer, etc. problems, to achieve the effect of preventing rainwater from entering the landfill layer, achieving rapid stabilization, and weakening the release strength

Active Publication Date: 2016-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution published in the above-mentioned patent mainly uses the principle of natural diffusion ventilation, but due to the low porosity and poor uniformity of the primary domestic waste landfill layer, the air diffusion efficiency is relatively low, and the waste stabilization rate is slow; the odor pollution in the landfill gas The waste enters the environment with the ventilation air, which may easily cause air pollution around the landfill.

Method used

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  • Integrated type semi-aerobic stabilizing and integrating system for refuse landfill and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a comprehensive quasi-aerobic and stable integrated system for waste landfills includes a landfill layer 2, a leachate collection and drainage layer at the bottom of the landfill 2, and a leachate collection and drainage layer The connected leachate collection well 9, the quasi-aerobic landfill gas conduction unit set in the landfill 2, the leachate recharge layer 6 arranged on the upper part of the landfill 2, and the leachate recharge layer 6 and the percolation layer 6 The leachate circulation pipeline connected to the filtrate collection well 9, and the landfill layer 2 is formed by mixing primary domestic waste and domestic waste incinerator slag.

[0036] Among them, the leachate collection and drainage layer is composed of a porous leachate collection pipe 11 arranged at the bottom of the landfill layer 2. The porous leachate collection pipe 11 is connected to the leachate collection well 9, and the porous leachate collection pipe 11 is a ...

Embodiment 2

[0047] In this embodiment, the inner diameter of the porous leachate collection pipe 11 is 650 mm, the opening rate of the upper half of the pipe wall is 15%, and the pore diameter of the percolating hole is 40 mm.

[0048] The diameter of the vertical gas well 1 is 1.6m, the center is a perforated pipe 13, and the outer edge is a steel wire protection net; among them, the inner diameter of the perforated pipe 13 is 175mm, and the wall of the perforated pipe 13 is evenly opened except for 1m at both ends. The aperture is 10mm. The malodorous gas purification packing layer 4 is formed by mixing household garbage incinerator slag, stable household garbage and crushed stone in a mass ratio of 1:1:2.

[0049] The cross-sectional area of ​​the leachate collection well 9 is 4m 2 And the water level of the percolate in the percolate collection well 9 is lower than the percolate collection and drainage layer.

[0050] The rest is the same as in Example 1.

Embodiment 3

[0052] In this embodiment, the inner diameter of the porous leachate collection pipe 11 is 500 mm, the opening rate of the upper half of the pipe wall is 12%, and the pore diameter of the percolating pore is 20 mm.

[0053] The diameter of the vertical gas well 1 is 1.2m, the center is a perforated pipe 13, and the outer edge is a steel wire protection net; among them, the inner diameter of the perforated pipe 13 is 150mm, and the wall of the perforated pipe 13 is evenly holed except for 1m at both ends. The aperture is 15mm. The malodorous gas purification packing layer 4 is formed by mixing household garbage incinerator slag, stable household garbage and crushed stone in a mass ratio of 4:4:1.

[0054] The cross-sectional area of ​​the leachate collection well 9 is 2.5m 2 And the water level of the percolate in the percolate collection well 9 is lower than the percolate collection and drainage layer.

[0055] The rest is the same as in Example 1.

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Abstract

The invention relates to an integrated type semi-aerobic stabilizing and integrating system for refuse landfill. The system comprises the following components: a landfill layer, a leachate collecting and discharge guiding layer which is arranged at the bottom of the landfill, a leachate collecting well which communicates with leachate collecting and discharge guiding layer, a semi-aerobic landfill gas guiding unit which is arranged in the landfill, a leachate recharging layer which is arranged on the landfill layer, and a leachate circulation pipeline for communicating the leachate recharging layer and the leachate collecting well; the landfill layer is prepared by mixed landfill of raw house refuse and incinerator slags of house refuse. Compared with the prior art, the system has the advantages of integral simple structure, construction convenience, low construction cost, and energy saving and environmental protection; the traditional semi-aerobic landfill technology of raw house refuse is improved, and a semi-aerobic stabilizing process during mixed landfill of raw house refuse and incinerator slags of house refuse is reinforced; and the system has a wide usage range and a good application prospect.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a comprehensive quasi-aerobic and stable integrated system of a waste landfill and its application. Background technique [0002] Domestic waste incinerator slag accounts for 15%-25% of waste incineration. In my country’s “Twelfth Five-Year” national urban domestic waste treatment facility construction plan, it is required that the ratio of domestic waste incineration treatment should reach 35%. 200,000 tons / day. At present, under optimal slag utilization conditions, 5%-10% of the metal and organic combustibles in the slag can be separated and recovered, 80% of the inorganics can be used for building materials aggregates, and 5-15% of the slag needs to be landfilled. According to the different conditions of the landfill and the ratio of slag to landfill, domestic waste incineration slag and primary domestic waste landfill are roughly divided into three situations: 1) La...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/30B09B3/00B01D53/22B09B1/00
CPCB01D53/228B01D2053/221B01D2257/90B01D2258/02B09B1/00B09B3/00C02F3/02C02F3/30C02F3/301C02F2301/04Y02E50/30Y02W10/10Y02W30/20
Inventor 章骅何品晶邵立明吕凡夏溢蒲红霞
Owner TONGJI UNIV
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