Method for reducing volatile organic contaminant residue in soil in mechanical ventilation repair process

Abstract

The invention discloses a method for reducing volatile organic contaminant residue in the soil in a mechanical ventilation repair process. The method comprises the steps of firstly disturbing volatile organic contaminated soil to enable a volatile organic contaminant in the volatile organic contaminated soil to fully volatilize; when the volatile organic contaminated soil enters the repair trailing period, detecting the concentration of the volatile organic contaminant in the volatile organic contaminated soil; if the concentration of the volatile organic contaminant exceeds a repair target value, feeding quick lime into the volatile organic contaminated soil, continuously disturbing the volatile organic contaminated soil and carrying out intensive repair treatment; and if the concentration of the volatile organic contaminant reaches or is lower than the repair target value, finishing the repair work. By using the method, not only is the smearing of the contaminant in the soil obviously relieved or eliminated, the repair period shortened and further the residue concentration of the contaminant in the soil reduced, but also the amount of the fed quick lime is obviously reduced, so that the cost of the intensive treatment can be saved.

Description

technical field [0001] The invention relates to a method for repairing polluted soil, in particular to a method for reducing the residue of volatile organic pollutants in soil in a mechanical ventilation repair process. Background technique [0002] Mechanical Soil Aeration is a soil remediation technology with simple operation, good effect and low cost. It is especially suitable for soil remediation of large-scale VOC-contaminated sites. It is especially worth noting that this technology is very economical and especially suitable for It is popularized and applied to developing countries where the high cost of soil remediation is unacceptable. [0003] This process utilizes mechanical disturbance of polluted soil in a closed remediation greenhouse, and through means such as forced convection ventilation, to strengthen the escape of volatile organic compounds in the soil, and achieve the purpose of remediating volatile organic contaminated soil through the collection and trea...

AI Technical Summary

Problems solved by technology

This process has the advantages of low energy consumption and simple operation, but the range of pollutants treated by this process is small, limited to components that are volatile at room temperature

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