应用模糊综合评判法评价浑河干流水质

为了解浑河干流水质状况,基于2010年浑河干流水质监测数据,选用化学需氧量、氨氮、生化需氧量、高锰酸盐指数、挥发酚、总磷和石油类等7项监测项目,采取模糊综合评价法,对浑河干流水质进行评价。结果表明,浑河干流阿及堡、戈布桥和东陵大桥断面水质较好,满足水功能区水质目标,七间房、砂山、七台子和于家房断面水质较差,不能满足水功能区水质目标。根据各断面评价因子权重分析,七间房断面主要影响因子为氨氮;砂山断面主要影响因子为氨氮,总磷和高锰酸盐指数次之;七台子断面和于家房断面的主要影响因子均为氨氮和总磷。从浑河干流整体考虑,氨氮超标为河流部分水质断面超标的最主要原因。

Fuzzy Comprehensive Evaluation on Water Quality of Mainstream of Hun River

In order to understand the water quality in the mainstream of Hun River,chemical demand oxygen,ammonia nitrogen,biochemical oxygen demand,potassium permanganate index,volatile phenol,total phosphorus and petroleum these seven monitoring indices were measured and then the water quality was evaluated using fuzzy comprehensive assessment method and based on 2010 Hun river mainstream water quality monitoring data.The results showed that the water quality of Ajipu,Gebuqiao and Donglingdaqiao sections was good and can fit the quality goal of the water function;however,the water quality of Qijianfang,Shashan,Qitaizi and Yujiafang sections was bad and cannot fit the quality goal of the water function.According to the analysis of the weight of evaluation factors,the main influence factors of Qijianfang section was ammonia nitrogen;the main influence factors of Shashan section was ammonia nitrogen,total phosphorus and Potassium permanganate index;the main influence factors of Qitaizi and Yujiafang section was ammonia nitrogen and total phosphorus.Considering the whole mainstream of Hun River,the over-standard of ammonia nitrogen is the main reason of the water quality substandard.