微乳液法处理含油污染土壤

Treatment of Oily Contaminated Soil by Microemulsion

通过比较不同洗液对含油污染土壤的淋洗效果,进一步研究了以脂肪醇聚氧乙烯醚硫酸钠(AES)为核心的微乳液对土壤中石油类污染物的去除作用,对比发现:经不同洗液处理后,土壤中剩余残油率按高低顺序依次为去离子水>十二烷基磺酸钠(SDS)>洗洁精>洗衣粉>微乳液,其中微乳液淋洗后的土壤中含油率由26%下降至2.44%。通过微乳液淋洗时间优化实验表明:土壤中总石油烃含量随洗脱时间的延长逐渐降低,当洗脱4 h后,残余石油含量低于2%,含油率变化趋于平缓。

By comparing the effect of different lotion on oily soil in this paper,further study the removal of petroleum pollutants from soil by microemulsion with fatty alcohol polyoxyethylene ether sodium sulfate(AES)as the core,comparative findings:after different lotion treatments,the residual oil rate in soil in order of high and low was deionized water>sodium dodecylsulphate(SDS)>detergent>detergent powder>microemulsion,the oil content in the soil after microemulsion leaching decreased from 26%to 2.44%.The experiments of microemulsion elution time optimization show that:the total petroleum hydrocarbon content in soil decreased gradually with the time of elution,after 4 h of elution,residual oil was below 2%,the change of oil content tend to be flat.