绵竹市典型河流水污染特征及水质评价研究  

Pollution Characterization and Water Quality Assessment of Typical Rivers of Mianzhu City

作　　者：常越亚 谢圆 Chang Yueya;Xie Yuan(Pony Testing International Group, Shanghai 200233, China;Pony Testing International Group, Chengdu 610041, China)

机构地区：[1]谱尼测试集团上海有限公司,上海200233 [2]谱尼测试集团四川有限公司,四川成都610041

出　　处：《环境科学与管理》2020年第3期184-189,共6页Environmental Science and Management

基　　金：绵竹市全域旅游一期PPP项目资助。

摘　　要：2017年3月、8月和11月对绵竹市两条典型河流(绵远河与马尾河)5个监测断面表层水样采集,并采用单因子评价法、综合污染指数法和主成分分析法对水质进行评价。河流水体呈弱碱性。单因子评价法表明,总磷(TP)为两条河流水质的主要限制因子。综合污染指数法表明,除马尾河中间断面外,其它水质状况均为轻度污染,且枯水期水质最差。主要污染因子为氨氮(NH3-N)、TP和高锰酸盐指数(CODMn)。主成分分析表明,断面水质主要受砷(As)、溶解氧(DO)、CODMn、氟离子(F-1)、TP和NH3-N等影响,出境断面水质优于中间断面。定性和定量评价的结论不一致,但应用多种方法评价水质具有重要意义。Water samples were collected in two typical rivers(Mianyuan River and Mawei River)of Mianzhu city in March,August,November of 2017 respectively.Factor characteristics analysis were performed using pH,dissolved oxygen(DO),ammonia nitrogen(NH3-N),total phosphorus(TP),permanganate index(CODMn),Arsenic(As),oil(TPH)and fluorine ions(F-1)as the physicochemical factors.Single-factor assessment method,comprehensive pollution index method and principal component analysis method were applied to evaluate the water quality of the rivers.The water body presented weak alkalinity.The single-factor assessment indicated that the first restrictive factors of water quality was TP.The results of comprehensive pollution index assessment showed that the water quality was in a mild pollution condition except for one sample section of Mawei River,with worse water quality in dry season period than in other two periods.NH3-N,TP and CODMn were the main pollution factors.The principal component analysis method showed that indexes such as As,DO,CODMn,F-1,TP and NH3-N greatly influenced the water quality of the rivers.The outbound section water quality was better than intermediate section.The three methods were a combination of qualitative and quantitative evaluation.The results of each method were not identical with each other.It is very important to work on water quality assessment using various methods.

关 键 词：绵竹市 典型河流 水质评价 单因子评价法 综合污染指数法 主成分分析法 

分 类 号：X824[环境科学与工程—环境工程]