人工湿地在重金属废水处理中的应用

The Application of Constructed Wetland for Heavy Metal Wastewater Treatment

文章论述了人工湿地处理技术处理重金属废水的机理和优点。人工湿地利用基质、植物、微生物这个复合生态系统的物理化学及微生物的作用,通过过滤、吸附、共沉淀、植物吸收、离子交换和微生物分解来实现对重金属废水的高效净化;人工湿地污水处理系统具有较高的净化效率和相对较低的基建投资与处理成本,该技术已被许多国家广泛应用。根据人工湿地在重金属污水处理中的研究和应用现状,指出了人工湿地处理重金属废水的前景及今后的研究方向。

The paper presents a review of the mechanisms and advantage of the constructed wetland for heavy metal treatment. The wetland as land - intensive biological treatment systems has been used in the purification of sewage by the means of substrate filtration, plant adsorption, pollutant sedimention, exchange and microbiology oxidation. And more, The wetland has wildly been used in many countries because of its efficiencies and relatively low capital investment. According to the study present state of constructed wetland for heavy metal wastewater treatment, feasibility of CW for heavy metal wastewater treatment and investigations in the future were discussed.