Device and method for remediation of soil in site polluted by organochlorine pesticides

A pesticide pollution and soil remediation technology, applied in the field of organochlorine pesticide-contaminated soil remediation, can solve the problems of low treatment efficiency, rough soil treatment, and carelessness, etc., and achieve high remediation efficiency, efficient remediation, and improved removal rate.
CN113000576AActive Publication Date: 2021-06-22NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
Publication Date
2021-06-22

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Abstract

The invention relates to the technical field of remediation of soil polluted by organochlorine pesticides, and particularly discloses a device and a method for remediation of soil in a site polluted by organochlorine pesticides. The device comprises a feeding module used for pretreating soil in a remediation area, a screening module connected with the feeding module, a composite remediation system connected with the screening module and used for remediating the soil, and an eluent treatment system connected with the composite remediation system. The method comprises the following steps: crushing the polluted soil, carrying out multi-stage screening, and then carrying out composite synergistic remediation treatment of atomization elution, spray elution and steam thermal desorption on obtained soil particles; by means of the device, composite efficient remediation of the contaminated soil can be completed, and remote treatment is not needed; by means of the method, the organochlorine-containing polluted land can be rapidly repaired, and the method is suitable for large-scale popularization.
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Description

technical field

[0001] The invention relates to the technical field of remediation of organochlorine pesticide-contaminated soil, in particular to a device and a remediation method for soil remediation of organochlorine pesticide-contaminated sites Background technique

[0002] With the development of my country's industrialization and urbanization, a large number of organochlorine pesticide production enterprises that have been closed or to be closed and relocated have emerged in recent years. According to incomplete statistics, there are hundreds of sites polluted by organochlorine pesticides (DDT, HCH, chlordane, mirex, etc.) across the country. Because organochlorine pesticides have "three causes" effects, stable structure, high toxicity, and difficult to decompose in soil, their natural degradation time is as long as several years to decades. Compared with general chemical pollution sites, they have long-lasting, Sites with high pollution hazards, high risks to human h...

Claims

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