土壤电阻加热技术原位修复有机污染土壤的关键问题与展望

为解决我国近年来重污染企业搬迁遗留的有机污染土壤问题，土壤电阻加热修复技术(electrical resistance heating，ERH)等热处置技术日益受到重视。ERH是目前修复挥发性、半挥发性有机污染土壤最具有潜力的原位热修复技术之一，其污染物去除率及土壤性质变化是用以评估该土壤修复技术的核心指标。在查阅文献的基础上，系统分析了热处置及电阻加热技术相关原理与适用范围，并对ERH处置过程中土壤性质可能发生的变化进行了深入讨论，以期为我国有机污染土壤原位热修复技术的推广和应用提供参考。

Key issue and expectation of soil electrical resistance heating remediation technology

In order to solve the problem of organic polluted soil left over from the relocation of heavy polluting enterprises in recent years, thermal remediation technologies such as electrical resistance heating (ERH), etc. have attracted an increasing attentions. ERH is one of the most potential in-situ thermal remediation technologies for the remediation of volatile and semi-volatile organics-contaminated soil. Pollutant removal efficiency and changes of soil property are the core indicators of soil remediation technology. In this review, the relevant principles and application scope of thermal disposal and ERH were systematically analyzed base on summarizing and analyzing of existing literatures. The possible changes in soil properties during ERH disposal were further discussed. It is expected that the results will provide reference for the popularization and application of in-situ thermal disposal technology in organics-contaminated soil remediation.