Classified thermal desorption repair system and technology of organic contaminated soil

Abstract

The invention relates to the technical field of contaminated soil remediation, particularly to a classified thermal desorption repair system and technology of organic contaminated soil. The classified thermal desorption repair system of organic contaminated soil comprises a preheater system, a high-temperature thermal desorption kiln system, a low-temperature thermal desorption device system and a soil discharging system, wherein the preheater system, the high-temperature thermal desorption kiln system, the low-temperature thermal desorption device system and the soil discharging system are communicated in sequence. According to the classified thermal desorption repair system and technology of organic contaminated soil, the high-temperature tail gas generated by the high-temperature thermal desorption kiln system is fully used through arranging the preheater system, so that the use ratio of thermal energy is improved; organic contaminated soil with different degrees of contamination is treated through the high-temperature thermal desorption kiln system and the low-temperature thermal desorption device system, so that the energy consumption of thermal desorption treatment is greatly decreased, and the operation cost is low.

Description

technical field [0001] The invention relates to the technical field of contaminated soil remediation, in particular to a classification thermal desorption remediation system and process for organic polluted soil. Background technique [0002] Developed countries such as Europe and the United States have conducted years of research on efficient remediation technologies for contaminated soil. In recent years, domestic scholars have also conducted some technical development and application research. For soil remediation technologies polluted by volatile organic pollutants, there are mainly thermal desorption, redox, microbial Remediation, gas phase extraction and other technologies, among which the thermal desorption technology has a good effect on the remediation of petroleum volatile organic compound-contaminated soil caused by oil refining and chemical industry. Compared with other technologies, it has fast repair speed, strong operability, and It has the advantages of adopt...

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Problems solved by technology

[0004] The object of the present invention is to provide a thermal desorption repair system and process for organic polluted soil classification, to solve the problem of low utilization efficiency of heat energy in the thermal desorption repair of polluted soil existing in the existing thermal desorption repair technology of polluted soil, Solve the technical problems of high energy consumption and high operating costs

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