基于污染指数法的太湖流域水污染治理效果分析

Study on Water Pollution Governance Effect of Taihu Basin: Based on Pollution Index Analysis

太湖流域水污染治理对我国水环境改善和生态文明建设具有重要的示范作用。为有效掌握太湖流域的水污染情况，以高锰酸盐、氨氮、总磷、总氮等为指标，对2005～ 2012年太湖流域水质变化趋势及变化原因进行了分析，并通过构建污染指数法对太湖流域水质的污染情况进行了评价。研究结果表明：经过治理，太湖流域水质确实得到改善，但仍然处于重污染范畴，而且水质改善速度缓慢。最后，针对太湖流域水污染现状，提出了相应的污染防治建议。

Water pollution governance of Taihu Basin plays an important exemplary role on improving water environment and building up ecological civilization of China. In order to effectively acknowledge the situation of Taihu Basin water pollution, potassium permanganate, ammonia nitrogen, total phosphorus, extraction of total nitrogen are selected as indices to find out the reasons for the trends and changes of water quality in Taihu Basin from 2005 to 2012, and a evaluation would be given by building up pollution index analysis focusing on Taihu Basin water pollution. The results show that： the water quality of Taihu Lake has improved after governance, but still under the category of heavy pollution and the speed of improvement has slows down. According to the present situation of water pollution in Taihu Basin, the corresponding pollution prevention advicewould be put forward.