重金属废水处理及回收的研究

Research to Heavy Metal Wastewater Treatment and Retrieval

重金属废水危害大、毒性强、难降解,不仅严重污染环境,而且威胁着人类的健康,是目前环境保护工作者需要解决的热点问题之一。文章综述了化学沉淀法、吸附法、离子交换法等处理方法,对以上各种方法的机理、优缺点进行了分析。着重介绍了几种组合工艺,并展望了重金属废水的发展前景。

Heavy metal wastewater is harmful to the environment and the human health clue to its strong poisonousness and non-degradation. This paper reviews the achievements of heavy metal wastewater treatment from the chemical precipitation, adsorption, and ion exchange. The mechanisms, advantages：and disadvantages of the above treatment techniflues are introduced. Some new combinational processes are also presented. Moreover, the future development on heavy metal wastewater treatment is prospected.