应用表面活性剂治理包气带石油污染的研究

为了探讨地下水石油污染的治理方法，应用灌注表面活性剂溶液法去除地下不系统中包气带石油类物质污染的实验研究。从市售９种非离子型表面活性剂中优选出ＡＥＯ－９和ＳＡ－２０２种脂肪醇聚氧乙烯醚类表面活性剂，确定了实验条件下的最佳去油浓度，１次改造清洗效率最高达９４％，土柱淋洗与块状石灰岩柱淋洗也取得较满意的结果。

The Application of Surfactants on Treatment of Petroleum-contaminated in Unsaturated Zone

The paper focused on the application of aqueous surfactant washing for cleaning up petroleum contamination in unsaturated zone.Regional geographical features and contamination characteristics have been investigated. Nine commercial nonionic surfactants were analyzed and tested.Their critical micelle concentrations were measured and their effects on emulsification and solubilization of oil and benzene as well as on soil dispersion were compared.The results showed that the best surfactants are AEO-9 and SA-20,i.e.,alcohol polyethoxylated ethers.Their optimum concentrations were also determimed.In batch-washing tests the highest removal efficiency can be as high as 94%. Results of leaching tests for soil columns and lime stone columns were satisfactory as well.From this study,it is clear that the application of surfactants can be included in field experimental research for the treatment of contaminated unsaturated zone of groundwater.