Research on comparison and selection of remediation schemes of contaminated soil in a certain organic contaminated land
At present,with the continuous development of urbanization in China,many industrial enterprises in the suburbs have been relocated or stopped production,leaving a lot of polluted land.At present,there are many technologies applied to the remediation of pol-luted sites both domestically and internationally.It is particularly important to use scientific methods to select economical,efficient,and technically feasible remediation technologies.Taking an organic polluted land in southern Jiangsu Province as the research object,the TOPSIS method was used to evaluate and determine the optimal remediation plan based on factors such as pollutant characteristics,re-mediation goals,and the current status of the contaminated plot,combined with previous experience in similar remediation projects.The results indicate that low temperature desorption has the highest relative closeness to the optimal remediation technique.It is recommen-ded to use in-situ chemical oxidation technology for mildly polluted soil,and low temperature desorption improvement pretreatment fol-lowed by thermal desorption treatment for heavily polluted soil.This study not only provides a basis for subsequent remediation manage-ment of land parcels,but also serves as a reference for the development of remediation plans for similar types of polluted land parcels as an engineering case.
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