合流制管网溢流污染过程中溶解性有机污染物演替特征分析  

Characteristics of dissolved organic matter in combined sewer overflows

作　　者：佃柳 海永龙 梁玉帅 郁达伟[1,4,5] 刘吉宝 郑祥[2,5] 汤大伟[6] 李玉鹏[6] 潘延京 赵天昊 魏源送 DIAN Liu;HAI Yonglong;LIANG Yushuai;YU Dawei;LIU Jibao;ZHENG Xiang;TANG Dawei;LI Yupeng;PAN Yanjing;ZHAO Tianhao;WEI Yuansong(Laboratory of Water Pollution Control Technology,Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085;School of the Environment,Renmin University,Beijing 100872;CCCC Second Harbor Consultants Co.,Ltd.,Wuhan 430061;State Key Joint Laboratory of Environment and Pollution Control,Research Center for Eco-Environment Sciences,Chinese Academy of Science,Beijing 100085;Membrane Technology Research Center of Technology Innovation and Industrial Development,Renmin University,Beijing 100872;Water Bureau of Changping District,Beijing 102200)

机构地区：[1]中国科学院生态环境研究中心,水污染控制实验室,北京100085 [2]中国人民大学环境学院,北京100872 [3]中交第二航务工程勘察设计院有限公司,武汉430061 [4]中国科学院生态环境研究中心,环境模拟与污染控制国家重点联合实验室,北京100085 [5]中国人民大学膜技术创新与产业发展研究中心,北京100872 [6]北京市昌平区水务局,北京102200

出　　处：《环境科学学报》2022年第3期20-27,共8页Acta Scientiae Circumstantiae

基　　金：国家水体污染控制与治理科技重大专项(No.2017ZX07102,2017ZX07102-002-001)。

摘　　要：合流制管网溢流(Combined Sewer Overflows,CSOs)是我国城镇地表水环境日益突出的瞬时污染源,明确其重要污染物溶解性有机质(Dissolved Organic Matter,DOM)的组分和来源对CSOs污染控制具有导向性意义.本研究以北运河上游沙河水库流域为对象,连续采集CSOs过程的样品,通过峰值法、特征参数法和平行因子法等解析CSOs中DOM的三维荧光光谱特征,发现CSOs中DOM主要有类色氨酸(S、T)、类富里酸(A)和类酪氨酸(D),代表内源输入的类色氨酸(S、T)和类酪氨酸(D)占比超过4/5.特征参数法和平行因子法的结果均表明DOM的腐殖化程度较低,生物活性较强,主要为微生物降解生成的和沉积物自身在冲刷和水力输运作用下释放的内源污染,建议CSOs污染控制主要应从内源输入的角度进行,着重控制管道沉积物中污染物的释放.Combined sewer overflow(CSO)was considered a looming instantaneous pollution source for urban surface water.The composition characterization and source control of the dissolved organic matter(DOM)would pave the road for mitigating CSO pollutants.The Shahe Reservoir in upper Northern Canal was investigated and its DOM was characterized by peak information and Parallel Factor(PARAFAC)analysis based on Theredimensional excitation emission matrix(3D-EEM)result.Results identified tryptophan(S,T),fulvic acid(A)and tyrosine(D),and the proportion of tryptophan(S,T)and tyrosine(D)as primary components of the DOM.The index and PARAFAC analysis proposed that DOM have low humification and strong biological activity,mainly contributed by endogenous sources,i.e.,generated by microbial degradation and released by sediment under scouring and hydraulic transport.The results suggested that the pollution control of CSOs should be paid more attention to the endogenous source,with emphasis on sewer sediments management.

关 键 词：合流制管网溢流污染 溶解性有机质 三维荧光光谱 平行因子分析 

分 类 号：X52[环境科学与工程—环境工程]