基于热脱附法的汞污染土壤修复研究进展

Research Progress on Remediation of Mercury-contaminated Soil Using Thermal Desorption Method

以汞为代表的重金属土壤污染已成为当前最受关注的环境议题之一。为去除土壤中的汞成分,使土壤满足工农业使用要求,人们已提出了多种技术手段,其中热脱附法以其诸多优点受到了大量关注。本文详细介绍了热脱附法的装置和工作原理,并根据已有研究和工程案例总结了该方法用于汞污染土壤修复应注意的问题,以及后续技术发展的方向。

Nowadays,the soil contamination from heavy metals,e.g.Hg,has become one of the most important environmental issues.In order to remove Hg from the soil and fulfill the requirements of industrial or agriculture use,numerous measures were proposed.Thermal desorption among them is paid much attention due to some unique advantages.The paper described the system layout and general working principle of thermal desorption.In addition,the key points when adopting this method for Hg-contaminated soil remediation,were summarized according to the existing scientific studies and engineering cases.Finally,the direction for future development of the technique was also pointed out.