基于DOM荧光光谱分析的初期雨水径流污染物溯源  

Source Tracing of Initial Rainwater Runoff Pollutants Based on DOM Fluorescence Spectrum Analysis

作　　者：钟江丽 沈捷 高华 沈大利 周永潮[4] ZHONG Jiang-li;SHEN Jie;GAO Hua;SHEN Da-li;ZHOU Yong-chao(PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,China;Huadong Eco-Environmental Engineering Research Institute of Zhejiang Province,Hangzhou 311122,China;The Design Institute of Landscape&Architecture China Academy of Art Co.Ltd.,Hangzhou 310012,China;Institute of Municipal Engineering,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江省华东生态环境工程研究院,浙江杭州311122 [3]中国美术学院风景建筑设计研究总院有限公司,浙江杭州310012 [4]浙江大学市政工程研究所,浙江杭州310058

出　　处：《中国给水排水》2023年第7期133-138,共6页China Water & Wastewater

基　　金：中国电建集团华东勘测设计研究院资助项目(HDY-CG19-2019118)。

摘　　要：初期雨水污染物质的输入逐渐成为城市地表水体污染的重要来源,对其进行溯源可为源头控制和精细化管理提供依据。为此,考察了HZ市某区域雨水径流中氮、磷、有机碳浓度的变化规律,采用初期冲刷比值FFn分析了其初期效应,结合可溶性有机物(DOM)的荧光光谱平行因子分析(EEM-PARAFAC)与主成分分析(PCA),探究初期雨水污染的主要来源,并利用绝对主成分线性回归法(APCS-MLR)分配来源比例。结果表明,前30%的降雨径流中携带了超过50%的污染负荷(FF_(30)=1.7),径流存在一定的初期效应。初期雨水径流中的磷和有机碳污染主要来自城市绿地(74%和85%),少部分来自居民区(19%和6%);氮污染也主要来自城市绿地(52%),但有少部分来自生活污水(28%),其中氨氮主要来自生活污水(69%)。The input of initial rainwater pollutants has gradually become an important source of urban surface water pollution.Tracing the source can provide a basis for source control and management.Therefore,this paper investigated the variation law of nitrogen,phosphorus and organic carbon concentrations in rainwater runoff in a region of HZ city,and analyzed the initial effect by using first flushing ratio(FF_(n)).The main sources of initial rainwater pollution were identified by combining the excitation-emission matrix parallel factor analysis(EEM-PARAFAC)and principal component analysis(PCA)of dissolved organic matter(DOM),and the contribution rate of different sources was distributed by using absolute principal components score and multivariate linear regression(APCS-MLR).The first 30% of rainfall runoff carried more than 50% of the first flush load(FF_(30)of 1.7),and the runoff had a certain first flush effect.The phosphorus and organic carbon pollution in initial rainwater runoff mainly came from urban green space(74% and 85%),and a small part came from residential areas(19% and 6%).The nitrogen pollution also mainly came from the urban green space(52%),and a small part came from domestic sewage(28%),of which ammonia nitrogen mainly came from domestic sewage(69%).

关 键 词：初期雨水 污染溯源 可溶性有机物 荧光光谱 平行因子分析 

分 类 号：TU992[建筑科学—市政工程]