热强化多相抽提在氯代烃污染场地的中试研究

Research on the Pilot Scale in-situ Remediation on Chlorinated Hydrocarbons Contaminated Site with Thermal Enhanced Multi-phase Extraction

氯代烃是地下水中的常见污染之一,也容易形成非水相的污染物,常用的多相抽提修复技术,对于收集自由相污染物有较好的效果,但实现完全达标还有一定的难度。本研究以某氯代烃污染场地为例,开展热强化的原位多相抽提修复,修复监测结果表明,加热一方面可以提高污染物的迁移能力,一方面可以促进污染物转化为气相而去除,能有效去除地下水中的氯代烃污染物。

Chlorinated hydrocarbons are one of the common pollutions in groundwater,and are always identified as non-aqueous pollutants.The multi-phase extraction remediation technology has a good effect on the collection of free-phase pollutants.In this study,a chlorinated hydrocarbon contaminated site was carried out thermally enhanced in-situ multiphase extraction,and the remediation results showed that on the one hand,heating can improve the migration ability of pollutants,and on the other hand,it can promote the conversion of pollutants into the gas phase,and can be effectively removed in groundwater.