Ex-situ remediation equipment for contaminated soil

Abstract

The invention discloses ex-situ remediation equipment for contaminated soil. A drying device is fixed to one end of the top of a rack. The drying device comprises a shell, heating pipes, a heat conducting plate and a drying cavity. The bottom of the shell is fixedly connected with the rack. The heat conducting plate is fixed in the shell. The drying cavity is formed in the heat conducting plate. The multiple heating pipes are arranged on the outer side of the heat conducting plate and fixedly connected with the shell. A smashing device is fixed to the end, far away from the drying device, of the top of the rack. The smashing device comprises a support, a press roll, a drive device, a box, a feeding port and a discharging port. The bottom of the support is fixedly connected with the rack. The box body is fixed to the end, far away from the drying device, of the support. The feeding port is fixed to the top of the box body, and the discharging port is arranged on the bottom of the box body. According to ex-situ remediation equipment for the contaminated soil, as the contaminated soil is smashed firstly, and then elution treatment is carried out, contaminants in the contaminated soil make contact with eluant more evenly, and remediation to the contaminated soil and the effects are better.

Description

technical field [0001] The invention relates to the technical field of contaminated soil remediation, in particular to a device for ex-situ remediation of polluted soil. Background technique [0002] In recent years, with the acceleration of my country's urbanization process and industrial transfer, and the implementation of national policies such as "retreating from two to three" and "retreating from cities to gardens", a large number of organochlorine pesticides (DDT, H66, Chlorine Dan, mirex, endosulfan, heptachlor, etc.) production enterprises, due to closure or relocation of high-concentration organochlorine pesticides polluted sites. Most of these polluted sites are located in the old urban areas or urban junctions, and are facing urgent land use function conversion and secondary development and utilization, such as: transforming into commercial land, residential buildings or public leisure places, etc. The high concentration of organochlorine pesticides remaining in t...

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Problems solved by technology

[0003] According to the patent number 201310092591, a multi-element ectopic remediation equipment and method for organochlorine pesticide-contaminated soil belongs to the technical field of soil physical and chemical remediation equipment for contaminated sites, including a stirring device, an eluent injection device, an eluent recovery device, and an ultrasonic generator. The device has a strong remediation broad-spectrum for organochlorine pesticide site soil with different characteristics, and the removal rate of single or multiple continuous elution is high, but because the contaminated soil entering the device has not been treated , the shape of the polluted soil is uneven, and some of the polluted soil has a large volume, which is not conducive to full contact with the eluent in the stirring device, which reduces the reaction efficiency between the polluted soil and the eluent

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