基于不同评价方法的汾河运城段水质研究  

Study on Water Quality of Yuncheng of Fen River Based on Different Evaluation Methods

作　　者：李彦平 LI Yanping(Yuncheng Ecological Enironment Monitoring Center,Yuncheng 044000,Shanxi,China)

机构地区：[1]山西省运城生态环境监测中心,山西运城044000

出　　处：《山西师范大学学报（自然科学版）》2024年第1期100-111,共12页Journal of Shanxi Normal University(Natural Science Edition)

摘　　要：综合评价汾河运城段在近期内的水质污染和变化趋势,可以为运城市及山西省河流的水环境保护和治理提供依据.因此根据2021年汾河流域运城段的水质自动监测数据,采用单因子评价法、综合污染指数法、超标评价法、秩相关系数评价法和模糊综合评价法对新西曲、杨赵桥、柴村桥、西梁桥和庙前5个断面的水质进行分析评价.结果表明:五个断面的高锰酸盐指数、氨氮、总磷、总氮和化学需氧量主要为V类和劣V类,水质较差;五个断面在不同月份主要属于中度污染和重污染,只有少部分断面时空属于轻度污染;总氮和化学需氧量是主要的污染物,超标率分别达到100%和11%;每个断面的污染物浓度降低不明显,水体情况还有待改善,汾河运城段的水质改善问题任重而道远.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 miaoqianqiao 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 evaluation method.The results showed that the index of permanganate,ammonia nitrogen,total phosphorus,total nitrogen 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.

关 键 词：单因子评价 综合污染指数 超标评价 秩相关系数 模糊综合评价法 汾河运城段 

分 类 号：X82[环境科学与工程—环境工程]