Remediation technology for organic contaminated soil

Abstract

The invention relates to a remediation technology for organic contaminated soil. According to the remediation technology for the organic contaminated soil, layered stepped type back excavation construction treatment is adopted, a remediation greenhouse has the height limit of 14m, the soil is divided into 3 layers, the soil with the depth of 0-4m is a first layer, the soil with the depth of 4-8m is a second layer, and the soil with the depth of 8-14m is a third layer, wherein the soil with the depth of 0-4m adopts an ex-situ chemical oxidation remediation technology and is transported to a region outside the greenhouse after being remedied, the soil of a region with the depth of 4-8m is excavated one by one every 10m along the remediation greenhouse from inside to outside in the vertical direction and is transported to other regions in the greenhouse for rapid ex-situ chemical oxidation remediation, and meanwhile, the excavation region with the depth of 8-14m is subjected to in-situ chemical oxidation remediation. The remediation technology for the organic contaminated soil has the advantages that the layered stepped type back excavation construction treatment is adopted, and therefore the technology cannot be limited by equipment and can be safer, and the treatment effect can be better.

Description

technical field [0001] The invention relates to the technical field of environmental protection technology, in particular to a repairing technology of organic matter polluted soil. Background technique [0002] At present, the commonly used in-situ mixing equipment that can enter the restoration greenhouse cannot reach a mixing depth of 14m, and a series of problems such as the 14m of ex-situ excavation cannot be reached due to stratum reasons. It is simply divided into shallow 0-4m and deep 4-14m. The height of the greenhouse is limited (the highest point is 14m), which leads to the limitation of in-situ mixing equipment; the geological conditions are poor, and there are potential safety hazards in the deep foundation pit. Contents of the invention [0003] In order to solve the above problems, the present invention provides a remediation process for organic matter-contaminated soil that adopts layered and step-by-step excavation construction and disposal, which is not li...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used in-situ mixing equipment that can enter the restoration greenhouse cannot reach a mixing depth of 14m, and a series of problems such as the 14m of ex-situ excavation cannot be reached due to stratum reasons. It is simply divided into shallow 0-4m and deep 4-14m. The height of the greenhouse is limited (the highest point is 14m), which leads to the limitation of in-situ mixing equipment; the geological conditions are poor, and there are potential safety hazards in deep foundation pits

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