动电技术修复城市污泥中重金属的研究

Research on Removal of Heavy Metals from Municipal Sludge by Electrokinetic Technique

对动电技术的基本原理(包括电渗透、电迁移、扩散作用、电泳和电解反应)作了详细地介绍,分析了影响动电技术修复污泥中重金属的主要因素,包括电解液的组成和pH值、污泥性质、元素的化学性质和存在形态、电压、电流与电极等。探讨了动电技术修复污泥中重金属的可行性,并在此基础上对动电技术应用于修复污泥重金属的前景作出展望。

The basic principal of electrokinetic remediation was introduced in detail, including electroosmosis, electromigration, diffusion, electrophoresis and electrode reaction. The major influencing factors of eleetrokinetic technique for heavy metals in sludge were analyzed, including the composition of electrolyte and pH values, sludge properties, the chemistry properties and forms of element, voltage, current and electrode. The possibility of electrokinetic technique for heavy metals in sludge was discussed, and it looked forward to the prospect of the electrokinetic technique for heavy metals in sludge.