2009—2019年温榆河指示微生物时空演变特征研究  

Spatio-temporal evolution of indicator microorganisms in Wenyu River during 2009—2019

作　　者：陈奕童 王东尔 李海燕 曹效鑫 郑祥[1,3] 程荣 CHEN Yitong;WANG Donger;LI Haiyan;CAO Xiaoxin;ZHENG Xiang;CHENG Rong(School of Environment and Natural Resources,Renmin University of China,Beijing 100872;SDIC Xinkai Water Environment Investment Co.,Ltd.,Beijing 101101;Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control,Beijing 100044)

机构地区：[1]中国人民大学环境学院,北京100872 [2]国投信开水环境投资有限公司,北京101101 [3]北京市可持续城市排水系统构建与风险控制工程技术研究中心,北京100044

出　　处：《环境科学学报》2022年第3期51-64,共14页Acta Scientiae Circumstantiae

基　　金：国家水体污染控制与治理科技重大专项项目(No.2017ZX07102-002);国家自然科学基金(No.52070192,51778618)。

摘　　要：温榆河是北京市城区主要的防洪和排水河道,具有以非常规水源补给为主的特点.选取FC、EC、ENT和SC等指示微生物指标和COD、氨氮等水质指标,系统分析2009—2019年温榆河流域指示微生物浓度时空变化与汛期对指示微生物浓度的影响及其影响因素.研究结果表明10年间温榆河流域在经过一系列治理措施后水环境质量明显改善,COD和氨氮的平均浓度分别削减约25%和65%,FC基本达到《地表水环境质量标准》(GB 3838-2002)Ⅳ~Ⅴ类水标准,EC和ENT大部分流域接近或符合USEPA阈值,SC平均浓度下降约44%,温榆河微生物污染得到一定程度的改善,但仍未能全部达到水功能区划目标,尤其是温榆河上游沙河水库区域近年来微生物污染较为严重.汛期会引起FC、EC和ENT浓度的明显上升,加剧微生物污染.Wenyu River is the main flood control and drainage channel in the urban area of Beijing,which is mainly replenished by unconventional water sources.In this study,indicators such as FC,EC,ENT and SC and water quality indicators such as COD and ammonia nitrogen were selected to systematically analyze the temporal and spatial variation of indicator microbial concentration and the influence of flood season on the indicator microbial concentration and its influencing factors in Wenyu River Basin from 2009 to 2019.The results show that after a series of treatment,the water environmental quality of Wenyu River basin has been improved significantly in the past ten years.The average concentration of COD and ammonia nitrogen has been reduced by about 25%and 65%.The concentration of FC has basically reached gradeⅣ~Ⅴwater quality standard of Surface Water Environmental Quality Standard(GB 3838-2002)and EC and ENT are close to or meet the USEPA threshold in most of the basins.The average concentration of SC has decreased by about 44%.The microbial pollution in Wenyu River has been improved to a certain extent,but it still fails to reach all the targets of water functional zone,especially in shahe reservoir area in the upper reaches of Wenyu River.In flood season,the concentration of FC,EC and ENT increased significantly,and the microbial pollution was intensified.

关 键 词：指示微生物 微生物污染 汛期 

分 类 号：X522[环境科学与工程—环境工程] X172