北京市中心城典型水域污染来源定量解析  

Quantitative analysis of pollution sources in typical lwater area of Beijingcentral city

作　　者：战楠 于磊 徐欢林 跃朝 高小晨 杨兰琴 ZHAN Nan;YU Lei;XU Huan;LIN Yuechao;GAO Xiaochen;YANG Lanqin;无(Beijing Institute of Water Science and Technology,Beijing 100048,China;Beijing Key Laboratory of Watershed Water Environment and Ecological Technology,Beijing 100048,China;Hebei University of Engineering Handan 056021,China;Hohai University,Nanjing 210024,China)

机构地区：[1]北京市水科学技术研究院,北京100048 [2]流域水环境与生态技术北京市重点实验室,北京100048 [3]河北工程大学,河北邯郸056021 [4]河海大学,江苏南京210024

出　　处：《北京水务》2023年第4期38-44,共7页Beijing Water

摘　　要：针对位于首都功能核心区的典型水体存在的水质波动问题,通过对可能导致水环境问题和风险的污染源定量化分析,识别主要影响因素。结果表明,研究区水体在面源、内源综合影响下,TN、TP和COD_(Cr)年入湖污染总量分别约1 009.15、111.73~134.05和38 634.4~38 955.61 kg,地表径流中污染总量最高。采集样品三维荧光光谱共解析得到4组荧光物质,在水体中表现出空间差异性;受下垫面类型分布影响,上游近岸区域水体DOM受面源影响较大;下游水体与水生态系统中生物作用影响更为密切。研究成果量化解析了导致典型水域水环境风险的影响因子,为城市河湖水体精准治理提供支撑。This article focuses on the water quality fluctuations in typical water bodies located in the central area of Beijing.The main influencing factors were identified through quantitative analysis,which may lead to water environmental problems.The results show that the total amount of TN,TP and COD_(cr) entering the lake in a year is about 1009.15,111.73-134.05 and 38634.4-38955.61 kg respectively under the comprehensive influence of non-point and internal source,and surface runoff has the highest total amount of pollution.The three-dimensional fluorescence spectra of the samples were analyzed and 4 groups of fluorescence substances were obtained,which showed spatial difference in the water.Due to the distribution of underlying surface types,the upstream near-shore DOM of waters are more affected by non-point sources,and the downstream waters are more closely affected by biological processes in aquatic ecosystems.The research results have quantitatively analyzed the influencing factors that lead to water environmental risks in typical water areas,providing support for the accurate management of urban rivers and lakes.

关 键 词：污染负荷 面源污染 地表径流 底泥释放 三维荧光 

分 类 号：X522[环境科学与工程—环境工程]