Assessment of Water Pollution in a Heavily Polluted Area of the Taihu Lake Basin

The water quality and eutrophication status of Taihu Lake in recent years are presented and the pollution trends are analyzed. Meiliang Bay, Zhushan Bay, and the upstream catchment area of the Taihu Lake Basin cover the major upstream rivers flowing into a heavily polluted area in the lake. Water pollution were found in the heavily polluted area, including unreasonable industrial structure and layout, high percentage of secondary industry, especially, excessive pollutants containing nitrogen and phosphorus are being discharged. high percentage of ammonia nitrogen in the major rivers going to the lake, serious pollution in the river branches, and poor quality of lake water. Result from this study provides a scientific basis for the comprehensive treatment of water environment in a heavily polluted area in the Taihu Lake basin and for the effective control of eutrophication in Taihu Lake.