原位淋洗技术修复石油类污染土壤的研究进展

Advances in Rehabilitation of Petroleum Polluted Soil through In Situ Leaching

随着石油的大量开采使用,污染土壤问题也越来越严重,如何修复石油污染土壤成为了人们研究的重点也是难点之一。原位淋洗修复方法不需要对污染土壤进行挖掘,能适用于大面积修复。但是,由于天然场地地质条件的复杂性和现今技术水平的限制,该方法还没有广泛的应用于实际修复之中。文章对原位淋洗修复技术的作用机理、适用范围和国内外研究现状做了介绍,探讨了天然含水层的非均质性对该技术修复效果的影响,介绍了3种原位淋洗修复强化技术,并对原位淋洗技术的未来进行了展望。

Along with extensive exploitation and utilization of petroleum,the issue of oil spilled soil pollution is progressively worse.Thus how to rehabilitate the polluted soil has become one of focuses and nuts in studies.The in situ leaching is a method need not to excavate polluted soil and adaptable in large area rehabilitation.But,because of limitations in complicated site geological condition and present technical level,the method has not been widely used in practical rehabilitations.The paper has introduced the action mechanism of the method,application scope,and research status at home and abroad;discussed impacts from anisotropy of natural aquifers on rehabilitation effect;introduced 3 techniques to strengthen the method;finally looked forward the future of in situ leaching technology.