株洲市港水污染特征研究

根据株洲市1991～1997年5条主要河港的水质监测结果,对市区港水污染特征进行了分析.由于河港周围污染源的种类和数量不同、港水的污染程度和主要污染物种类也不尽相同.各港水综合污染指数(P)表明霞湾港污染最重,其次是铜塘港.再次为建宁港和白石港.枫溪港污染最轻.枫溪、建宁和白石港周围的工厂较少,但接纳了市区大部分生活污水.因此.有机污染物和富营养化物质是港水中的主要污染物;铜塘港和霞湾港中几乎全部为工业区的废水,因此,其污染物成分复杂,主要污染物为有机物和重金属离子.

Pollution Characteristics of the Harbour Water in Zhuzhou City

From the contaminant contents in the water of 5 habours monitored from 1991 to 1997, we studied the pollution charateristics of the harbour water in Zhuzhou city. Each harbour had its own pollution features different from the others, because both the quantity and the nature of pollution sources around them were distinct. The calculation of Multiple polluting Index( P ) of the harbour water showed that, Xiawan Harbour( P =265.58) was polluted most seriously; next were Tongtang Harbour( P =75.47), Jianning Harbour( P =24.12), Baishi Harbour( P =22.61) and Fengxi Harbour( P =8.32). In addition, Jianning Harbour, Baishi Harbour and Fengxi Harbour had fewer factories around them and mainly absorbed the domestic sewage of urban district, therefore, they had the main kinds of contaminants including organic pollutants(CODcr, BOD 5 and oil) and chemicals causing eutrophication(T P and NH 4 N); while, in Tongtang Harbour and Xiawan Harbour, both organic substances and heavy metals were among the complicated contaminants because of absorbing large quantities of wastewater discharged by many factories.