人工湿地污水处理系统填料及其净化机理研究进展

Research progress on filler application and purification mechanisms in constructed wetland wastewater treatment system

填料是人工湿地污水处理系统的基本要素,将发生在系统内部的所有反应连接为统一的整体,在污染物去除过程中起到至关重要的作用。本文综述了国内外在人工湿地污水处理系统中填料方面的研究进展,介绍了国内外用于人工湿地污水处理系统的天然矿物、工业副产物、人造产品等填料的特性、去污能力及其代表性材料的应用优势和限制,讨论了填料在人工湿地污水处理系统中的去污机理、工程应用,分析了存在的问题与解决措施,目的是为现阶段多样化的湿地系统填料的选择和组合配置的研究与实践提供参考。

As an essential component of constructed wetland system, filler combines all reactions into a coherent whole and plays an important role in removal of various pollutants in the wastewater treatment process. This paper reviews the progress of research on filler applications in constructed wetlands. The major types of wetland fillers are natural minerals, industrial by-pro- ducts and modified media. The characteristics, pollutant removal capacity and mechanism, appli- cation feasibility and limitation of the major filler types were compared. The problems observed in engineering application examples and relevant countermeasures for improving the filler application efficiency were discussed. The purpose of this review is to provide reference for screening and in- tegrated use of fillers in construction of wetland systems for treatment of various types of wastewaters.