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In-situ intensified aerobic stabilization method of municipal solid waste landfill

An in-situ strengthening and domestic waste technology, applied in the field of environmental engineering, can solve problems such as surrounding environmental damage and secondary pollution, and achieve the effects of increasing the stabilization rate, reducing pollutant content, and shortening the stabilization period

Inactive Publication Date: 2013-10-23
武汉致衡环境安全工程技术有限公司
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Problems solved by technology

[0007] The restoration work of the simple domestic waste landfill after rapid stabilization often requires excavation. If dire

Method used

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  • In-situ intensified aerobic stabilization method of municipal solid waste landfill

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Example Embodiment

[0024] The specific implementation of a method for in-situ enhanced aerobic stabilization of a domestic waste landfill site is now described in detail:

[0025] A method for in-situ enhanced aerobic stabilization of a domestic waste landfill site includes the following steps:

[0026] ①Closed isolation

[0027] A vertical anti-seepage curtain 3 is arranged along the outside of the garbage dump around the landfill. The vertical anti-seepage curtain 3 can be made of Larsen piles, continuous pile walls formed by cement clay grout grouting, anti-seepage membrane, etc., to isolate the vertical anti-seepage curtain. The leachate of the garbage pile inside the seepage curtain 3 is convective with the groundwater outside the vertical anti-seepage curtain 3. The bottom elevation of the vertical anti-seepage curtain 3 is lower than the bottom elevation of the garbage dump. When the groundwater level is high, dewatering well points 2 should also be set around the outer sides of the vertical a...

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Abstract

The invention discloses an in-situ intensified aerobic stabilization method of a municipal solid waste landfill and belongs to environmental engineering. The municipal solid waste landfill is provided with a percolate collection vertical shaft and an air injection horizontal shaft in situ, so as to induce an intensified aerobic agent and fresh air; biomasses in scrap heaps are degraded in an aerobic environment rather than an anaerobic or quasi-anaerobic environment, so that wastes oxidation can be accelerated and the stabilization speed is increased; the percolate collection vertical shaft is arranged to pump out percolate in the scrap heaps and purifies the percolate to be used for preparing an intensified aerobic solution, so that a water resource can be circularly utilized and the content of pollutants in the scrap heaps can also be reduced; sealing and isolating measures including a wall, a vertical anti-seepage curtain and the like are arranged so as to control secondary pollution of the waste landfill in the intensified aerobic stabilization process; the in-situ intensified aerobic stabilization method disclosed by the invention can rapidly degrade the biomasses in the scrap heaps through intensified air and water cycle, has the characteristic of shortening the stabilization period of the waste landfill, and is suitable for biological repairing of the municipal solid waste landfill.

Description

technical field [0001] The invention discloses an in-situ in-situ aerobic stabilization method for domestic waste landfills, which belongs to the category of environmental engineering. Background technique [0002] According to statistics, there are currently more than 3,519 simple landfills in my country, accounting for 29% of the total number of domestic waste landfills in the country, which seriously threaten the safety of the surrounding environment and urgently need ecological restoration. As of 2010, 34% of the 935 municipal solid waste landfills across the country were not impermeable, and only 26% were not checked for environmental protection. Pollution incidents occur from time to time. [0003] At the same time, with the advancement of urbanization, many landfills built in the early stage have entered new urban areas and need to be repaired and utilized as soon as possible. The natural degradation and stabilization period is long and cannot meet the needs of land d...

Claims

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Application Information

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IPC IPC(8): B09B1/00
Inventor 胡竹云李璐席本强高云云余芳江超群贡昶
Owner 武汉致衡环境安全工程技术有限公司
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