化学淋洗—H2O2-O3-UV复合催化氧化技术修复硝基甲苯一氯、二氯代物污染土壤工程实例

针对某退役化工企业地块的关注污染物硝基甲苯一氯、二氯代物的历史形成、污染状况和土质特点,在小试技术验证的基础上,采用化学淋洗—H₂O₂-O₃-UV复合催化氧化技术进行受污染土壤异位修复的工程实践。结果表明,该技术能较好地适用于关注污染物的土壤修复工程,修复后指标明显优于目标值,且造价和运行费用较低,具有显著的社会效益、经济效益和环境效益,有一定的推广价值。

Remediation of monochloro and dichloro nitrotoluene contaminated soil by combined technique of chemical washing and H2O2-O3-UV composite catalytic oxidation

According to the historical formation，pollution status and soil characteristics of the land contaminated by monochloro and dichloro nitrotoluene in a decommissioned chemical enterprise，on the basis of technological verification by laboratory-scale test，the ex-situ remediation by chemical washing-H₂O2_{-O3-UV composite catalytic oxidation was applied in engineering practice. The results showed that this technique could be well applied to soil remediation projects with the contaminants of concern with the indices after the remediation being obviously better than the target values and the cost and operation cost being low，and had significant social，economic and environmental benefits，and certain extension value.}