Contaminated soil fuel gas in-situ thermal desorption repairing equipment

Abstract

The invention relates to the technical field of soil remediation, in particular to gas in-situ thermal desorption remediation equipment for contaminated soil. Comprising a combustion heating module, a plurality of heating well modules, a plurality of vertical extraction well modules, a plurality of horizontal extraction well modules, a heat preservation module, a soil conditioning module, a waste heat recovery and tail gas backdraft module, a tail water purification treatment module and a tail gas purification treatment module. The combustion heating module is respectively connected with each heating well module and each vertical extraction well module; the soil conditioning module is respectively connected with each vertical extraction well module and each horizontal extraction well module, and is used for providing chemicals to decompose organic pollutants; one end of the waste heat recovery and tail gas backdraft module is connected with the heating well modules, the vertical extraction well modules and the horizontal extraction well modules, and the other end of the waste heat recovery and tail gas backdraft module is connected with the combustion heating module, the tail water purification treatment module and the tail gas purification treatment module. The equipment is economical, efficient, convenient to operate, reasonable in structure, high in adaptability and capable of being applied to engineering large-scale application.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to an in-situ thermal desorption remediation equipment for polluted soil gas. Background technique [0002] High-concentration, refractory organics (VOCs, SVOCs, pesticides) and volatile heavy metal mercury are common pollutants in my country's industrial sites, with the characteristics of high toxicity, strong carcinogenicity and teratogenicity, and their safe restoration is my country's environmental protection. Major environmental problems that need to be solved urgently in the field of restoration. Thermal desorption remediation technology refers to heating the soil to a certain temperature through direct or indirect heat exchange, so that the organic pollutants in the soil are volatilized and separated from it, and the volatilized pollutants are effectively collected and removed. process of processing. According to whether the contaminated soil is excavated, thermal d...

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Problems solved by technology

[0004] In order to solve the shortcomings of the current in-situ thermal desorption repair equipment for contaminated soil, the purpose of the present invention is to provide an in-situ thermal desorption of contaminated soil gas that is economical, efficient, convenient to operate, reasonable in structure, strong in adaptability, and can be applied on a large scale in engineering. with repair equipment

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