人工湿地对污水的除磷效果研究

Study on the Effect of Constructed Wetlands for Wastewater on Phosphorus Removal

近年来,我国的水体污染和富营养化现象越来越严重,已经严重制约了国民经济的发展。人工湿地除磷,是近几年发展起来的一种廉价有效的除磷新技术,越来越受到各国的普遍重视和关注。该文介绍了人工湿地除磷的工作原理,详细叙述了人工湿地除磷技术的发展及其应用前景。为了研究不同基质人工湿地对磷的去除效果,选用沸石、炉渣和土壤为基质,以黄昌蒲、美人蕉、水葱等为植被构建人工湿地处理生活污水。3种基质的人工湿地对磷的去除效果都很好,但除磷效率则不同。通过参数对比,得出各因素对污水中磷的去除效率。

In recent years,the problem of water pollution and lake eutraphication becomes more and more serious,which influence the development of our country. Constructed wetland is a low-cost technique to remove phosphorus,which gets and more concern in most countries in recent years,In this paper,the principle and new development of phosphorus removal by constructed wetland are reviewed. In greenhouse,three different constructed wetlands were established with slag,zeolite and paddy soil,as substrate,and with Acorus gramineus Soland,Canna chineresitic and Calla Aspidistra,respectively,as vegetation. The slag,zeolite and paddy soil -bed wetlands all displayed high efficiency in removing TP. Different plants had different ability to saaimilate phosphorus. Through the passage,we can know the efficiency of different factors in removing phos-phorus.