南京新增太湖流域水环境现状分析

Analysis on Status of Water Environment of Taihu Basin in Nanjing

根据秦淮河水质参数的实测结果,应用水质标识指数法,对秦淮河9个点位水环境现状分别进行单因子评价和综合评价,并提出了相应的保护对策和治理措施。结果表明,氨氮、总磷及总氮在9个监测点位中均表现为主要污染因子,其中秦淮河上游江宁段水质最好。污染物入河量及环境容量分析结果表明,河流中污染物主要来源于生活污染,COD、氨氮、TN和TP分别占81.94%、77.86%、73.12%和41.83%,其次是工业污染及农业污染。其中,COD排放量占环境容量的97.48%,氨氮排放量超过环境容量51.10%。

This study was carried out to evaluate the water quality of Qinhuai River with the method of single factor and comprehensive water quality identification index based on the data collected from nine sites. The corresponding protective measures and treatment measures were put forward. The results indicated that in nine sites the main pollutants were NH＋4-N、TP and TN,and the water quality of Jiangning section was best than the other sites. According to the results of amount of pollutants into the river and the environmental capacity,pollutants in river mainly come from life,followed by industrial pollution and agriculture pollution. which the COD,NH＋4-N,TN and TP accounted for81. 94%,77. 86%,73. 12% and 41. 83% respectively in life pollution. Emissions account for 97. 48% of the environmental capacity of COD and NH＋4-N emissions more than environmental capacity by 51. 10%.