宁夏排水沟污染单元研究  

Study about the Pollution Unit of Drainage Ditch in Ningxia

作　　者：田林锋[1] 罗桂林[2] 李娇[1] 马映雪[1] Tian Linfeng;Luo Guilin;Li Jiao;Ma Yingxue(Shizuishan City Environmental Monitoring,Ningxia,753000;Ningxia Polytechnic Institute,Ningxia,753000)

机构地区：[1]石嘴山市环境监测站,宁夏753000 [2]宁夏理工学院,宁夏753000

出　　处：《当代化工研究》2019年第17期71-73,共3页Modern Chemical Research

基　　金：宁夏回族自治区生态环境厅201709项目资助;宁夏回族自治区重点研发计划重大项目(2019BFG02020)

摘　　要：第三排水沟是宁夏石嘴山市境内最主要的入黄排水沟,对黄河宁夏出境断面水质影响较大。为研究第三排水沟水质污染现状及污染特征,利用SPSS (社会统计软件包)对第三排水沟主要污染物化学需氧量、总磷、总氮、氨氮、高锰酸盐指数进行研究。研究结果表明,影响第三排水沟水环境质量的主要污染物及污染程度依次为:总氮>氨氮>总磷>化学需氧量。针对三二支沟流域,氨氮污染主要出现在Site-4,该监测断面超标率为58.3%;化学需氧量污染主要出现在Site-3,该断面超标率达到66.7%;总磷污染主要出现在Site-3,该断面超标率达到58.3%;总氮污染主要出现在Site-4,该断面超标率达到100%。针对第三排水沟流域,氨氮污染主要出现在石嘴山境内(Site-6、Site-7、Site-8),该区段全年超标;化学需氧量污染主要出现在Site-6,超标率为85.7%;总磷污染主要出现在Site-6,超标率为71.4%;总氮污染出现在全流域,第三排水沟全流域5个监测断面总氮超标率均为100%。The third drainage ditch is the main drainage ditch into the Yellow River in Shizuishan City,Ningxia,which has a great impact on the water quality of the exit section of the Yellow River in Ningxia.In order to study the status and characteristics of water pollution in the third drainage ditch,the chemical oxygen demand,total phosphorus,total nitrogen,ammonia nitrogen and permanganate index of the main pollutants in the third drainage ditch were studied by SPSS.The results show that the main pollutants and pollution degree affecting the water environment quality of the third drainage ditch are:total nitrogen> ammonia nitrogen> total phosphorus> chemical oxygen demand.For the sanerzhigou watershed,ammonia nitrogen pollution mainly occurs in site-4,with the over standard rate of 58.3%;chemical oxygen demand pollution mainly occurs in site-3,with the over standard rate of 66.7%;total phosphorus pollution mainly occurs in site-3,with the over standard rate of 58.3%;total nitrogen pollution mainly occurs in site-4,with the over standard rate of 100%.For the third drainage basin,ammonia nitrogen pollution mainly occurs in Shizuishan(site-6,site-7,site-8),which exceeds the standard throughout the year;chemical oxygen demand pollution mainly occurs in site-6,which exceeds the standard rate of 85.7%;total phosphorus pollution mainly occurs in site-6,which exceeds the standard rate of 71.4%;total nitrogen pollution occurs in the whole drainage basin,which exceeds the standard rate of 100% in 5 monitoring sections of the third drainage basin.

关 键 词：SPSS 排水沟 污染 控制单元 研究 

分 类 号：X824[环境科学与工程—环境工程]