黄河流域支流金堤河汛期水质变化分析及治理对策研究

Study on Water Quality Variation in Flood Season of Jindi River,A Tributary of the Yellow River Basin and Control Countermeasures

2021年汛期,安阳市出现多次强降雨过程,其中滑县金堤河流域降水量是历年同期的3.2倍,导致金堤河汛期水质明显恶化。本文运用单因子评价、平均综合污染指数、水环境承载力评价等方法对金堤河汛期水质变化进行深入分析。结果表明:2021年金堤河河流承载力状态为超载状态;汛期强降水期间,水质出现持续性恶化;丰水期的高锰酸盐指数、生化需氧量、氨氮、总氮、总磷为三个水期的最高浓度值;污染物排放主要来自污水处理厂排污以及农业面源污染。文中着重探讨汛期强降水对金堤河水质的影响及解决办法,以期为安阳市进一步加强黄河流域水环境保护,做好区域水污染防治,解决金堤河水环境问题提供技术支撑。

In the flood season of 2021,Anyang City has many heavy rainfall processes,among which the precipitation of Jindi River basin in Hua County was 3.2 times that of the same period in previous years,resulting in significant deterioration of the water quality of Jindi River in the flood season.In this paper,single factor evaluation,average comprehensive pollution index,water environment carrying capacity evaluation and other methods were used to analyze the change of water quality in flood season in Jindi River.The results showed that the bearing capacity of Jindi River was overload in 2021.The water quality deteriorated continuously during heavy rainfall in flood season.The highest concentrations values of permanganate index,biochemical oxygen demand,ammonia nitrogen,total nitrogen and total phosphorus were found in the wet period.The pollutant discharge mainly comes from sewage treatment plant discharge and agricultural non-point source pollution.This paper focus on the influence of heavy rainfall on the water quality of Jindi River in flood season and the solutions,in order to provide technical support for Anyang City to further strengthen the protection of water environment in the Yellow River basin,do a good job in regional water pollution prevention and control,and solve the water environment problems of Jindi River.