某废弃工业场地土壤修复研究

A Study on Soil Remediation of an Abandoned Industrial Site

摘要: 上海某废弃工业场地因早期环境保护意识的缺失，场地内表层土受到了4种多环芳烃污染，包括苯并(a)蒽、苯并(b)荧蒽、苯并(a)芘、二苯并(a, h)蒽。结合场地的工程条件与环境状况，采取浅层土壤开挖硫酸钠药剂原地异位氧化修复技术。土壤污染区域开挖清理后，坑底和坑壁土壤验收样品的目标污染物浓度达到修复目标值要求。污染土壤经氧化处理后，目标污染物浓度达到的修复目标值要求。本次工程应用表明，对于土壤的多环芳烃污染，氧化修复技术高效可行。

Abstract: Due to the lack of environmental protection awareness in the early days, the topsoil of an abandoned industrial site in Shanghai was polluted by 4 kinds of polycyclic aromatic hydrocarbons, including benzo(a)anthracene, benzo(b)fluoranthene, benzo(a)pyrene and dibenzo(a, h)anthracene. Taking into consideration of engineering and environmental conditions, ex-situ chemical oxidation (ESCO) technology was applied using a sodium sulfate agent. After the excavation and cleaning of the contaminated area, the target pollutant concentration in the pit bottom and pit wall soil is lower than the remediation target value. After oxidation treatment of contaminated soil, the concentration of target pollutants is lower than the corresponding remediation target value. The engineering application shows that the oxidation remediation technology is efficient and feasible for soil polycyclic aromatic hydrocarbon pollution.