挥发及半挥发性有机物污染场地异位修复技术的二次污染及其防治  

SECONDARY POLLUTION AND ITS PREVENTION OF VOC/SVOC-CONTAMINATED SITES WITH EX SITU REMEDIATION TECHNOLOGIES

作　　者：马妍[1] 董彬彬[1] 杜晓明[2] 张大定[1,3] 门著铭 黄锦楼[4] 蒋成杰[5] 李发生[2] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012 [3]北京生态岛科技有限责任公司,北京102402 [4]中国科学院生态环境研究中心,北京100085 [5]南京工业大学环境学院,南京211800

出　　处：《环境工程》2017年第4期174-178,共5页Environmental Engineering

基　　金：2014年环保公益项目(201409047);中央高校基本科研业务费专项基金(2016QH02)

摘　　要：欧洲和美国的污染场地修复实践表明:60%~90%的被污染场地存在有机物污染问题,其中挥发与半挥发性有机物(VOC/SVOC)是常见的土壤污染物。针对VOC/SVOC污染场地,采用异位修复技术符合现阶段的中国国情,但污染场地修复工程实践中可能存在二次污染问题。主要介绍了土壤气提、土壤机械通风、热脱附、土壤淋洗、生物堆和水泥窑协同处置6种污染土壤异位修复技术的原理,重点讨论了异位修复技术过程中共通的土壤挖掘、清运、堆放等中间环节产生的以及不同技术自身可能存在的二次污染问题,并给出了相应的防治措施,以期能够为中国和其他发展中国家的VOC/SVOC污染场地修复提供参考和建议。The contaminated site remediation practice in Europe and America showed that organic pollutants were discovered in60% ~ 90% contaminated sites,in which volatile organic compounds（ VOC） and semivolatile organic compounds（ SVOC）were the common contaminants in soil. Ex-situ remediation technologies conformed to current situation in China for VOC/SVOC contaminated sites,but the secondary pollution was necessary to pay attention in remediation engineering practice. In this paper,the principles of soil vapor extraction,mechanical soil aeration,thermal desorption,soil washing,biopiles and cement kiln were introduced. The common secondary pollution in the process of ex-situ remediation technologies were extensively discussed, including excavation, removal, and stacking. Meanwhile, the secondary pollution of different technologies in repair process were also discussed,and the corresponding prevention methods were provided. This paper provided references for remediation of VOC/SVOC-contaminated sites in China and other developing countries.

关 键 词：挥发性有机物 半挥发性有机物 污染场地 异位修复 二次污染防治 

分 类 号：X53[环境科学与工程—环境工程]