苯酚污染土壤的电动力学修复技术研究

电动力学技术是正在发展中的土壤修复技术，具有诸多优点，之一是不破坏原有自然环境。通过小型实验研究了土壤中苯酚在电动力学作用下的迁移特征以及添加表面活性剂LAS对苯酚去除效率的影响。结果表明：①电动力学作用可有效地促使苯酚解吸附和迁移，其迁移效果与土壤酸碱性质、污染物类型和表面活性剂浓度等密切相关，不同通电时间，迁移方向有所不同；②添加LAS能提高苯酚的去除效率，当LAS浓度为0．046mol／L时，苯酚的去除效果最佳，去除率达到91．16％。采用适当的电动力学工艺可修复受苯酚污染的土壤。

Research on Electrokinetic Remediation of Phenol-Contaminated Soil

Electrokinetics is a soil remediation technology under development. One of its advantages is that it does not disturb the natural environment during remediation. The mobilization of phenol in soil by electrokinetics and the affection of surfactant to the removal efficiency of phenol were tested through bench -scale experiments. The results showed that electrokinetic transport process could promote effectively desorption and migration of phenol, and the migration effect was related closely to the soil acid-b...