人工湿地基质对污水中污染物净化研究进展

近年来,人工湿地作为一种生态和经济两方面兼顾的污水处理技术已经得到广泛应用,基质是人工湿地系统中重要组成部分之一。综述了基质在人工湿地系统中净化污染物方面的研究进展,详细阐述了基质含有的Fe,Mn和Al元素可显著提高COD去除率的机理,基质孔隙度造成的湿地系统堵塞对COD去除的影响;黄铁矿和生物炭在反硝化反应中的优势及改性脱氮基质的性能;总结了影响基质去除磷的湿地环境因素和改性除磷基质的研究范围,以期为人工湿地基质的应用和研究提供参考。

In recent years,artificial wetland has been widely applied as a wastewater treatment technology that takes both ecological and economic factors into consideration.Among them,substrate is an important component of the artificial wetland wastewater treatment system,playing a crucial role.The research progress on the removal of pollutants in constructed wetland system by matrix is reviewed,and the mechanism that the removal efficiency of COD can be significantly improved by Fe,Mn and Al contained in matrix is expounded in detail,the effects of substrate porosity on COD removal,the advantages of pyrite and biochar in denitrification and the performance of modified nitrogen removal substrates.The wetland environmental factors affecting phosphorus removal and the research scope of modified phosphorus removal substrate were summarized.The paper is expected to provide reference for the application and research of artificial wetland substrate.