Ectopic coupled repairing system and method for treating organic compound contaminated soil

Abstract

The invention provides an ectopic coupled repairing system and method for treating organic compound contaminated soil. The system comprises a contaminated soil pile body, a nutrient solution and moisture distribution pipe network connected with the contaminated soil pile body, as well as an air exhaust and tail gas treatment pipe network connected with the contaminated soil pile body, wherein the contaminated soil pile body comprises a concrete base layer spreading on an open field, a first layer of geotextile which is spread on the concrete base layer, a first layer of a high-density polyvinyl chloride impermeable membrane which is spread on the first layer of geotextile, a second layer of geotextile which is spread on the first layer of the high-density polyvinyl chloride impermeable membrane, a gravel gas conductive layer which is spread on the second layer of geotextile, a third layer of geotextile which is spread on the gravel gas conductive layer, contaminated soil piled on the third layer of geotextile, as well as a second layer of the high-density polyvinyl chloride impermeable membrane covering on the contaminated soil. The repairing system can be used for repairing large-scale volatile organic matter and biodegradable organic matter compound contaminated soil with low cost, and is suitable for large-scale industrial application.

Description

technical field [0001] The invention belongs to the field of remediation of contaminated sites, in particular to a system for remediating organic composite polluted soil and a method for remediating organic composite polluted soil. Background technique [0002] Soil pollution in my country has posed a threat to the sustainable use of land resources and the ecological security of agricultural products. So far, 36 million hectares of farmland has been polluted by organic pollutants nationwide. The types of pollutants include petroleum, polycyclic aromatic hydrocarbons, pesticides, organic chlorine, etc.; The refining industry also pollutes a large area of ​​land; in the Shenfu petroleum sewage irrigation area, the content of polycyclic aromatic hydrocarbons in the surface and bottom soil both exceeded 600mg / kg, causing serious pollution of crops and groundwater. At the same time, with the continuous advancement of my country's urbanization process, many polluting enterprises ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heterotopic coupling repair system and method for treating organic composite polluted soil, to solve the technical problem that organic composite polluted soil cannot be repaired on a large scale in an industrialized manner

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