Method for determining acting range of biogas gas guiding well of municipal solid waste landfill

Abstract

The invention provides a method for determining an acting range of a biogas gas guiding well of a municipal solid waste landfill, comprising the following steps of: drilling a plurality of gas guiding wells in the municipal solid waste landfill along the same straight line; selecting the two gas guiding wells to be respectively used as a gas pumping well and a detection well; if the pressure of the detection well is positive pressure, determining that the acting range of the gas guiding wells is less than the distance between the two wells; if the pressure of the detection well is negative pressure, determining that the acting range of the gas guiding wells is more than the distance between the two wells; selecting different gas guiding wells to be combined to gradually and accurately determine the acting range interval of the gas guiding wells; and when the pressure of the detection well is zero or weak negative pressure and the oxygen concentration is more than zero, determining that the distance between the detection well and the gas pumping well is the acting range of the gas guiding wells. According to the method for determining the acting range of the biogas gas guiding well of the municipal solid waste landfill, the problems of the existing method that the engineering period is long and the quantity of the drilled wells is more are solved, and the aim of determining the acting well of the gas pumping well by an optimized scheme is achieved; and the method is convenient to operate and is safe and practical.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a method for determining the action range of a methane guide well in a domestic garbage landfill. Background technique [0002] Usually the landfill site is equipped with natural landfill gas drainage facilities at the initial stage of construction. After the waste is landfilled, the gas generated is naturally discharged through the gas-guiding gabion. However, in the process of landfilling and soil covering operations, the operating machinery is easy to damage part of the air guide pipe, causing the air guide pipe to tilt or even break, resulting in poor conduction and drainage; the uneven settlement of the garbage pile will also affect the landfill gas. In addition, if the anti-seepage and covering measures around the landfill are not good, it will cause the gas to migrate to the surrounding area, causing safety hazards. Therefore, it is of great significance to form...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for determining the action range of biogas gas guide wells in domestic waste landfills, so as to solve the problems of long engineering period and large number of wells in the existing method, and achieve the determination of gas extraction wells with an optimized scheme. The purpose of the scope of action, and easy to operate, safe and practical

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