巢湖营养化状况评价及水质恢复探讨

Study on the Eutrophication in Chaohu Lake and Its Remediation

巢湖水质的污染特征为营养盐浓度居高不下，局部水域藻类疯长，已属重富营养化。根据近１０ａ监测数据，总氮的点源污染负荷占５１％，非点源占４９％；总磷的点源污染负荷占６０％，非点源占４０％。笔者也探讨了ＣＯＤ、总氮、总磷的湖内空间分布及水质恢复对策。综合分析巢湖的环境特征、水质现状及流域环境经济状况，短期内巢湖的水质将很难明显改观。如各项规划中的措施到位，预计到２０１０年，巢湖的水质可望从富营养－极度富营养化向中富营养－富营养化转变。

Typical pollutants in Chaohu Lake are nutritious salts and cause extreme algae growth.The water quality in the lake has been in a heavy eutrophication state.According to the monitoring results over the past 10 years,51% of total N came from point sources and 49% from non point sources.60% of total P was from point sources and 40% from non point sources.The spatial distribution of COD,total N and total P concentrations within the lake and the remediation measures were also studied and discussed.