玉溪大河河道污水富营养化的时空变化特征  

Time-space Variation Characteristics of Waters Eutrophication in Malodorous Yuxi River

作　　者：鲁冬梅 任永其 史云东[2] 张翠萍[2] 李淑英[2] 朱春蓉[2] 周元清[2] 

机构地区：[1]云南省玉溪市红塔区环境监测站,云南玉溪653100 [2]玉溪师范学院污染控制与生态修复研究中心,云南玉溪653100

出　　处：《环境科学与技术》2015年第12期129-134,共6页Environmental Science & Technology

基　　金：国家自然科学基金(31460144);云南省教育厅重点项目(2014Z148)

摘　　要：通过对2014年2月(枯水期)和10月(丰水期)玉溪大河(曲江-红塔区段)河道水体中总磷(TP)、总氮(TN)、氨氮(NH_3-N)、化学需氧量(COD)、生化需氧量(BOD_5)含量的分析,并运用综合营养指数法对水体富营养化级别进行评价,试图阐明玉溪大河城市河道水体富营养化指标的时空动态规律。研究结果表明:玉溪大河河道水体已处于严重的富营养化状态,属Ⅴ类或劣Ⅴ类水;TP、TN、COD、NH_3-N和BOD_5具有明显的季节性差异,且枯水期高于丰水期;水质沿程的总体变化趋势为先升高后降低。研究认为,玉溪大河污染主要来源于农业污水、生活污水、工业污水、雨水径流、管道及下渗污水。The time-space variation characteristics of waters eutrophication in Yuxi River were investigated with the evaluating comprehensive eutrophication state index of total phosphorus（TP）,total nitrogen（TN）,ammonia nitrogen（NH_3-N）,chemical oxygen demand（COD）,biochemical oxygen demand（BOD_5）of February（dry season）and October（rain season）in 2014. Results showed that Yuxi River was in serious eutrophic state,which was at Grade Ⅴ or interior to Grade Ⅴ. TP,TN,COD,BOD_5 and NH_3-N had obvious seasonal difference;their concentrations in dry season were higher than in rain season. Changes along the river of water quality declined after rising. The study suggested that pollutants such as agricultural wastewater,sewage and industrial wastewater,rain water runoff,pipeline and infiltration water all make for quite a toxic river.

关 键 词：玉溪大河 城市河道 富营养化指标 时空变化特征 

分 类 号：X502[环境科学与工程—环境工程]