芦苇湿地去除印染污水铬离子的研究

Study of Removal of Hexavalent Chromium in Textile Wastewater of Phragmites Australis Wetland

研究了芦苇人工湿地对印染污水中铬离子的去除和吸附作用,采用了意大利城市普拉托用芦苇人工湿地对印染工业废水处理厂排出的废水进行后处理的净化过程的近10年的研究数据,结果表明:六价铬离子和三价铬离子的去除率分别达到72%和26%,这是一个投入实际使用并且可持续发展方案。

This article studies the removal of chromium ions in textile wastewater in a wetland and analyzes in details based on the data collected from a ten-year study in a full-scale subsurface horizontal flow constructed wetland planted with Phragmites australis in the city of Prato （Italy）. The results show that the removal rate of hexavalent and trivalent chromium reach 72 % and 26% ,respectively,which prove that it is a applicable and sustainable method.