In-situ biological treating method for municipal solid waste landfill

Abstract

The invention relates to an in-situ biological treating method for a municipal solid waste landfill, which comprises the following steps: 1) reshaping a field area; 2) preventing the field area from leaking; 3) covering the field area; and 4) performing aerobic in-situ biological treatment on the field area. According to the in-situ biological treating method for the municipal solid waste landfill provided by the invention, the waste landfill can be treated within a controllable area; the parameters required by treatment can be precisely calculated; the whole treating process is accurately monitored; the whole process is under a completely closed state; and the secondary pollution to the external environment during the treating process is avoided.

Description

【Technical field】 [0001] The invention relates to a treatment method of domestic garbage, in particular to a method for in-situ biological treatment of domestic garbage landfills, and belongs to the technical field of environmental pollution control. 【Background technique】 [0002] According to the "Twelfth Five-Year Plan" National Urban Household Waste Harmless Treatment Facilities Construction Plan, by the end of 2010, the annual domestic waste removal volume in facilities cities and counties across the country was 221 million tons, and the harmless disposal rate of domestic waste was 63.5%. Among them, only 27.4% are counties. Moreover, there are still many planned goals during the "Eleventh Five-Year Plan" period that have not been completed, and the capacity for harmless disposal of garbage is far behind the amount of garbage generated. [0003] At present, China's waste treatment technology mainly adopts landfill, composting, incineration and other methods. Landfill ...

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Problems solved by technology

[0006] Compared with the three technologies, the transportation cost of the off-site sanitary landfill is high, and it will cause a load impact on the planned sanitary landfill, which reduces the landfill life; There will be dangers in the process, and direct landfill after screening will cause secondary pollution in the later stage

[0007] The in-situ treatment technology of garbage dumps that has been used in China is to carry out surface greening after the site is closed, but the pollution generated by the garbage dump is still discharged and treated in the same way after the site is closed, and the hidden dangers of the environment and safety have not been eliminated.

In recent years, the landfill in-situ accelerated treatment technology has been adopted to increase the decomposition rate of microorganisms on organic matter through measures such as injecting air and recharging leachate, so that it can be completely degraded within 2-3 years. Blurred boundaries, no anti-seepage measures at the bottom and sides, and insufficient coverage at the top, etc., the simple in-situ accelerated treatment technology cannot achieve the expected results

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