石油污染土壤热脱附修复的应用研究进展

Application research progress of thermal desorption remediation for petroleum contaminated soil

热脱附技术由于适用范围广、处理时间短、处理效率高、污染物可回收,成为石油污染土壤修复领域的研究热点。为此,在剖析石油污染土壤热脱附机理的基础上,系统阐述了三种原位热脱附技术(电阻热脱附、蒸汽热脱附和热传导热脱附)和两种异位热脱附技术(直接热脱附和间接热脱附)在石油污染修复中的应用现状,最后指出石油污染土壤热脱附技术存在的问题和攻关方向,可为石油污染土壤热脱附技术的进一步推广应用提供支撑。

Thermal desorption technology has become a research hotspot in the field of petroleum contaminated soil remediation due to its wide application range,short treatment time,high treatment efficiency and recyclable pollutants.Therefore,the thermal desorption mechanism of petroleum contaminated soil was analyzed.The application status of three in-situ thermal desorption technologies(electrical resistance heating,steam enhanced extraction,thermal conductive heating)and two ex-situ thermal desorption technologies(direct thermal desorption and indirect thermal desorption)were systematically described.Finally,the existing problems and research directions of thermal desorption technology of petroleum contaminated soil were pointed out.This paper can provide suggestions for the further application of thermal desorption technology of petroleum contaminated soil.