表面活性剂在土壤污染治理中的应用

环境问题日益严重,污染土壤修复的要求便越来越迫切,应用表面活性剂治理污染土壤也得以广泛研究。对于以淋洗为主的表面活性剂治理土壤污染法,表面活性剂的吸脱附行为、增溶能力和毒性是淋洗工艺取得优良效果的关键。文中重点阐述了离子型、非离子型、复配表面活性剂体系和生物表面活性剂在土壤重金属污染、有机污染和土壤-重金属复合污染治理中的应用。概述了影响表面活性剂治理效果的因素,讨论了此类方法的缺陷并从污染物的迁移转化和降解规律、治理工艺与组合治理技术3方面对未来的工作进行了展望。

Application of Surface Active Agent in Soil Pollution Control

Accompanying with the increasingly serious environmental problems, the demand for remediation of contaminated soil becomes more and more urgent, and the application of surface active agent to treat contaminated soil has been widely studied. The adsorption and desorption behavior, solubilization ability and toxicity of surfactants are the key factors for the treatment of soil pollution. In this paper, application of ionic, non-ionic, compound surfactant system and biosurfactant in the treatment of soil heavy metal pollution, organic pollution and soil heavy metal compound pollution have been introduced. The factors affecting the treatment effect of surface active agent have been summarized, and the defects of these methods have been discussed. Pollution control has been introduced from three aspects, they are migration, transformation and degradation of pollutants, treatment process and combined treatment technologies.