Study on Water Quality of Yuncheng of Fen River Based on Different Evaluation Methods
The comprehensive evaluation of water pollution and its changing trend in Yuncheng Section of Fenhe River in recent years can provide the basis for water environment protection and treatment in Yuncheng and Shanxi Province.According to the automatic monitoring data of water quality in Yuncheng of Fenhe River Basin in 2021,the water quality of five sections of xinxiqu,yangzhaoqiao,chaicunqiao,xiliangqiao and miao-qianqiao were analyzed and evaluated by single factor evaluation method,comprehensive pollution index method,over standard evaluation method,rank correlation coefficient evaluation method and fuzzy comprehensive evalua-tion method.The results showed that the index of permanganate,ammonia nitrogen,total phosphorus,total ni-trogen and chemical oxygen demand of the five sections were mainly classified as V class and inferior V class,and the water quality was poor.The five sections mainly belong to moderate and heavy pollution in different months,and only a few sections belong to light pollution in time and space.Total nitrogen and chemical oxygen demand are the main pollutants,and the exceeding rate reaches 100％and 11％,respectively.In addition,the reduction of pollutant concentration in each section is not obvious,and the water condition needs to be improved.Overall,the environmental protection problems of Yuncheng section of Fenhe river have a long way to go.
single factor evaluationcomprehensive pollution indexover standard evaluationrank correla-tion coefficientfuzzy comprehensive evaluationYuncheng section of Fenhe river
NETL
NSTL
万方数据
