化工学报2025，Vol.76Issue(3)：1297-1304,8.DOI:10.11949/0438-1157.20240860
有机污染场地土壤催化氧化修复技术研究
Study on catalytic oxidation remediation technology of organic polluted site soil
摘要
Abstract
A multi-component catalytic oxidation system was developed for organic contaminated sites soil in this study.In the system,sodium persulfate and hydrogen peroxide were used as the oxidant,Fe2+and Cu2+were used as transition metal catalyst,meanwhile,ascorbic acid was used as the complexing agent,forming the homogeneous liquid catalytic oxidation repair reagent.The developed remediation regent was performed in UV light treatment under 50℃to constitute a three-component activation system including UV light,transition metal ion and thermal activation.The addition of Cu2+effectively promoted the reduction from Fe3+to Fe2+.And the addition of ascorbic acid effectively regulate the continuous activation of Fe2+.In this oxidation system,the degradation of organic pollutants mainly relies on active free radicals SO·4-and HO·.The developed technology was applied to the soil remediation of high-concentration organic contaminated plots.After 30 days of remediation,the removal rates of OPs,PAHs,and BTEX in the soil were 85.0%,60.5%,and 73.0%,respectively.The efficient removal of organic pollutants in the soil was achieved,providing the basis for the safety development of complex contaminated sites and the improvement of land resources in our country.关键词
有机污染场地土壤/氧化/多元活化/修复/自由基Key words
organic contaminated site soil/oxidation/multi-component activation/remediation/free radicals分类
资源环境引用本文复制引用
高越,李丁,高玉苗..有机污染场地土壤催化氧化修复技术研究[J].化工学报,2025,76(3):1297-1304,8.基金项目
国家重点研发计划项目(2022YFC3702405) （2022YFC3702405）
