剩余污泥重金属污染现状及其治理技术

概述了城市污水处理厂剩余污泥中重金属的污染现状,并总结分析了剩余污泥中重金属的治理技术,介绍了污泥重金属的稳定化技术(钝化作用、固化作用、微波固定化作用)以及重金属污染物的去除技术(化学方法、电动修复技术、生物浸滤、植物修复法)。对这些技术的原理以及研究情况进行了综述,并对其技术的特点进行分析,可为污泥重金属污染治理提供理论依据。

This article provides an overview of the pollution status of heavy metals in the excess activated sludge from municipal sewage treatment plant, and summarizes its treatment technologies. It introduces heavy metal pollution control technologies （passivation, solidification,microwave immobilization）and heavy metals pollutant removal technologies （chemical methods, electrokimtic remediation, bio-leaching, phytoremediation）.The principles and research actuality of these technologies are reviewed. Moreover, technical characteristics of these technologies are analyzed to provide theories for the treatment of heavy metals existing in sludge.