Water Pollution Impact Analysis in the Dry Season and the Rainy Season of Taihu Lake Region

Non-point source pollution is one of the main causes of eutrophication in Taihu Lake region. The goal of this study was to identify, analyze and compare different factors that impacted water pollution in the rainy and dry season of Taihu Lake .The results showed that concentration of total phosphorus, total nitrogen, ammonium was at serious level. Total nitrogen content in the rainy season was greater than that in dry season and average total phosphorus content in xinzhuang was significantly higher than in Wangzhuang and Yixing. The phosphorus pollution in Taihu Lake region was at serious level than irrigation water and urban water. The significant factors of surface water were nitrogen, phosphorus and CODMn while most influential factor of ground water was ammonium nitrogen.