中文摘要：

以某化工厂排污沟渠中受六氯苯（hexachlorobenzene,HCB）、锌和镍复合污染的实际沉积物为对象,研究非离子表面活性剂OP-10对沉积物中污染物的增溶解吸效果和电动力学修复污染物的强化迁移效果。解吸实验结果表明：OP-10对HCB增溶解吸效果较好,对重金属离子的解吸有一定的促进作用。电动力学修复发现,随电渗析流进入沉积物中的OP-10很快的吸附在靠近阳极沉积物上,从而阻碍了助剂的输送并影响HCB的迁移,而靠近阴极区域沉积物中的有机质迁移会促进HCB的去除。沉积物pH变化引起的重金属沉淀是制约锌迁移的主要因素。镍的整体迁移效果不明显。

英文摘要：

The desorption and enhanced electrokinetic （EK） remedy of hexachlornhenzene （HCB）, zinc and nickel from a real contaminated sediment with nonionic surfactant OP-10 were investigated. The real sediment contaminated with multiple pollutants for decades were sampled from the ditch of a chemical plant. From the desorption experiment, it was demonstrated that HCB was effectively removed from the sediment and the desorption of heavy metals was also enhanced by OP-10. At the end of electrokinetic process, it was observed that the remedy of HCB was halted with the result of the adsorption of OP-10 on sediments, but was assisted by the migration of sediment organic content. The electromigration of zinc was dependent on the distribution of sediment pH. It was found that the migration of nickel was not obvious in sediments.