清涧河2018-2020年水质变化特征及污染评价  

Water Quality Change Characteristics and Pollution Assessment of Qingjian River form 2018 to 2020

作　　者：梁丽娥 刘美琪 Liang Li'e;Liu Meiqi(School of Civil Engineering,Yan'an University,Shaanxi,716000)

机构地区：[1]延安大学建筑工程学院,陕西716000

出　　处：《当代化工研究》2022年第16期92-94,共3页Modern Chemical Research

基　　金：2017年延安大学博士启动项目“红碱淖水环境演化及湿地生态响应研究”(项目编号:YDBK2017-19);2021年延安大学大学生创新创业训练计划项目“延安市清涧河水污染特征及水质评价”(项目编号:D2021048)。

摘　　要：为了弄清清涧河水质状况,分析2018—2020年水质指标变化特征,并运用综合污染指数法进行评价。结果表明:2018年、2019年为劣V类水质,2020年水质有所提升,达到Ⅲ类水质标准。2018—2020年各水质指标含量变化特征为枯水期高于丰水期。单因子评价法显示2018—2020年清涧河处于污染状态,主要污染物为TN。综合污染指数P的变化范围为0.86~7.13,平均值为2.28,总体呈现下降趋势,说明水质不断好转,但依然呈现污染状态。因此应加大治理措施,降低污染源输入,进一步提升水质。To explore the water quality of Qingjian River,this paper analyzed the characteristics of water quality indicators during 2018-2020 and employed integrated pollution index to assess the water quality.The results show that:in 2018 and 2019,the water quality was inferior V class,which was improved in 2020,reaching III class.During 2018-2020,the changes in the content of various water quality indicators were characterized that the changes in dry season were bigger than that in the wet season.From 2018 to 2020.The single factor evaluation method showed that Qingjian River was polluted from 2018 to 2020,and the main pollutant was TN.The change range of integrated pollution index P was 0.86~7.13 with the aver-age value being 2.28.The overall downward trend shows that the water quality continues to improve,but it is still polluted.Therefore,treatment mea-sures should be taken to reduce the sources of pollution and further improve the water quality.

关 键 词：水质指标 变化特征 单因子评价法 综合污染指数法 

分 类 号：X[环境科学与工程]