In-situ thermal treatment, gas phase extraction and permeable reaction wall combined device for remediating organic polluted soil

Abstract

The invention provides an in-situ thermal treatment, gas phase extraction and permeable reaction wall combined device for remediating organic polluted soil. The device comprises an in-situ thermal assembly, a gas phase extraction assembly and a permeable reaction wall assembly, wherein the in-situ thermal assembly comprises a plurality of electromagnetic heating assemblies which can be drilled ina polluted soil area; the gas phase extraction assembly comprises a gas collecting cover which covers the polluted soil area; a gas pipeline is connected to a vacuum pump, and the vacuum pump is connected to an organic substance treatment device; the permeable reaction wall assembly comprises a plurality of cylindrical reaction columns and insulation walls which are arranged in the soil pollutingsubstance moving direction. According to the device, the in-situ thermal assembly, the gas extraction assembly and the permeable reaction wall are integrated for comprehensively treating in the organic polluted soil area, so that organic pollutants can be prevented from further transferring in the soil; the pollution range can be effectively controlled; the convenience of maintenance is ensured; secondary pollution is avoided; the reaction prospect is good; and the device can work normally in the polluted soil for a long time.

Description

technical field [0001] The invention relates to a repair method and a repair device for organic polluted soil, in particular to a device for combined repair of organic polluted soil by in-situ heat treatment, gas phase extraction and a permeable reaction wall. Background technique [0002] Soil pollution refers to the entry of pollutants from human activities into the soil, which has caused or may deteriorate the quality of the soil environment, causing harm or possible harm to organisms, water bodies, air or / and human health. The risks of soil pollution mainly include: farmland pollution affecting the quality of agricultural products, affecting the growth of crops, resulting in reduced production; endangering the safety of the living environment, and soil pollution in residential, commercial, and industrial construction sites may be through oral intake, inhalation, and skin contact. Harm the safety of human settlements; threaten the safety of the ecological environment. So...

AI Technical Summary

Problems solved by technology

However, the microbial restoration cycle time is long, and the restoration bacteria are difficult to cultivate

[0004] To sum up, the existing soil remediation technology has the disadvantages of low efficiency, easy diffusion of pollution, and secondary pollution. There is still a need for a high-efficiency and non-secondary pollution-free technical solution for sites with large polluted areas and serious organic pollution.

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