Method and equipment for in-situ electric repair of portable contaminated soil

Abstract

The invention creatively provides a method and equipment for in-situ electric repair of portable contaminated soil. The method comprises the following steps: firstly punching two holes in suitable positions of the contaminated soil as a cathode tank and an anode tank respectively; secondly, filling the cathode tank and the anode tank with an electrolyte and respectively placing electrodes, whereinthe two electrodes are respectively connected with an anode and a cathode of a power supply, so that the contaminated soil between the power supply and the electrodes forms a conductive path; betweenthe electrodes, arranging an ion adsorption partition plate between the contaminated soil and the electrolyte. The method creatively provided by the invention not only can flexibly and conveniently realize the in-situ repair of the contaminated soil, but also can realize secondary recycling.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and specifically relates to a portable in-situ electric restoration method and equipment for polluted soil, which can flexibly move and control the flow of pollutants in a directional manner, has small secondary pollution risks, fast restoration, and low processing costs. It can especially deal with low-permeability soils, overcome the common problem of pore blockage, and is suitable for the disposal of heavy metal-contaminated soils. Background technique [0002] With the rapid development of economy and society, the degree of environmental pollution is also deepening. The soil environment of seepage pits is seriously polluted. Heavy metal pollutants are the main source of pollution. The ecological environment damage caused by them and the problems that endanger human health cannot be ignored. Most of the polluted seepage pits are distributed among the farmlands. They are...

AI Technical Summary

Problems solved by technology

Traditional physical remediation technologies mainly include foreign soil method, soil replacement method, deep plowing, electrothermal repair technology, vitrification technology, etc. The first three methods are suitable for the treatment of any contaminated soil, but they are limited to small-scale use, and the disposed of The soil carrying heavy metal pollutants still has the risk of secondary pollution, and the cost of long-distance transportation and disposal is too high for a slightly larger scale, which is not suitable for large-scale promotion

Electrothermal restoration technology uses high-frequency voltage to heat the soil to desorb pollutants from soil particles, but the treatment cost is too high, so it is only suitable for the treatment of volatile heavy metal pollutants such as mercury and cesium

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