摘要:In this study,taking the SP-1848 plot of the Tai-yuan Coal Gasification Plant Area as an example, through the analysis of the site's organic pollution characteristics and soil properties and combining it with the actual conditions of the site, six remediation technologies for cement kiln co-processing, mechan-ical ventilation, ectopic thermal desorption remedia-tion, ectopic gas phase extraction, ectopic chemical oxidation remediation and microbial remediation were preliminarily screened out. Also, eight indica-tors were selected as the remediation technology screening index system from four aspects, including economic factors, environmental factors, technical factors and social factors.using a combination of the AHP and TOPSIS methods for the sorting of six re-mediation technologies. The results show that the re-mediation technologies of ectopic chemical oxida-tion (lightly polluted soil),ectopic thermal desorp-tion(moderately polluted soll),and cement kiln co-processing(heavily polluted soil) should be adopted in the remediation of the contaminated site. After the remediation was completed, the remediation effect was evaluated on the site, and the test results of all samples were lower than the remediation target value, which met the requirements of remediation and man-agement, and there was no need for further remedia-tion. This study may be used as a reference for the remediation of similarly contaminated sites.