Contaminated soil remediation method

Abstract

The invention discloses a contaminated soil remediation method. The contaminated soil remediation method comprises contaminated soil pretreatment, ex-situ thermal desorption remediation of contaminated soil, wastewater treatment after contaminated soil remediation and effect evaluation monitoring after contaminated soil remediation. The contaminated soil pretreatment comprises a contaminated soildigging and transporting stage, a contaminated soil screening and crushing stage, a contaminated soil moisture content adjusting stage and a contaminated slag block washing stage, and the ex-situ thermal desorption repair of contaminated soil comprises a contaminated soil thermal desorption stage, a purified soil post-treatment stage and a tail gas treatment stage; the remediation efficiency and remediation quality of the contaminated soil are improved, toxic and harmful pollutants are converted into harmless substances so as to guarantee human health, maintain normal production and construction activities and prevent and treat new environmental problems caused by field property changes; original industrial land is successfully converted into second-class residential land, service facilityland, commercial land, park green land and water supply land, and popularization value is achieved.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a restoration method for polluted soil. Background technique [0002] Soil is one of the main natural resources that humans rely on for survival, and it is also an important part of the human ecological environment; with the increase in the discharge of inorganic pollutants and organic pollutants in the environment, the situation of soil pollution is becoming more and more serious; soil pollution It not only affects the output and quality of agricultural products, but also involves the quality of the atmosphere and water environment. It can endanger the life and health of animals and humans through the food chain; soil pollution needs to be restored. Soil restoration refers to the use of physical, chemical and biological methods to transfer, absorb, Degrade and transform the pollutants in the soil to reduce its concentration to an acceptable level, or convert toxic and har...

AI Technical Summary

Problems solved by technology

With the development of science and technology, many soil remediation materials have been developed; the restoration of contaminated soil by artificial spraying of remediation agents, inoculum solutions, etc., has the disadvantages of poor remediation effect and low remediation efficiency; therefore, the design of a pollution Contaminated soil remediation methods with good soil remediation effect and high remediation efficiency have become an urgent problem to be solved

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