北方沿海某市供水系统中23项代表性新污染物特征分布及风险评价  

Distribution and Risk Assessment of 23 Representative Emerging Pollutants in Water Supply System in a Coastal City of Northern China

作　　者：孙扬 王春虎 韩宛汝 顾瑞环 聂德祯 刘晓阳 SUN Yang;WANG Chunhu;HAN Wanru;GU Ruihuan;NIE Dezhen;LIU Xiaoyang(Qingdao Monitoring Station of National Urban Water Quality Monitoring Network,Qingdao 266034,China;Qingdao Haicheng Water Quality Monitoring Technology Co.,Ltd.,Qingdao 266034,China;Qingdao Water Group Co.,Ltd.,Qingdao 266071,China;Qingdao Hairun Water Group Co.,Ltd.,Qingdao 266071,China)

机构地区：[1]国家城市供水水质监测网青岛监测站,山东青岛266034 [2]青岛海诚水质监测技术有限公司,山东青岛266034 [3]青岛水务集团有限公司,山东青岛266071 [4]青岛市海润自来水集团有限公司,山东青岛266071

出　　处：《净水技术》2024年第8期124-134,共11页Water Purification Technology

基　　金：国家重点研发计划项目(2022YFF0609104)。

摘　　要：近年来,随着我国经济社会发展,社会大众对新污染物的关注程度日益升高,新污染物治理已上升为国家战略。但目前国内关于新污染物分布特征的研究主要集中在南方地区的河道、水产养殖区、污水处理厂等水环境中。文章以我国北方沿海典型资源性缺水某市的供水全流程为研究对象,选取包括本地径流水、引黄及南水北调水、本地水库水及应急海水淡化水4个主要水源,其对应的4座主水厂和2个代表性管网取样点,采用气相色谱法、气相色谱-串联质谱法、液相色谱-串联质谱法等开展23项代表性新污染物检测并研究其分布特征,并引入人体健康风险评价对水中新污染物风险进行评价。检测结果表明,主要水源为本地径流水、引黄及南水北调水的2个取样点分别含有4种和2种抗生素类新污染物,其质量浓度为18~56 ng/L,其人体健康风险商为7.7×10^(-4)~5.4×10^(-3),该地区水源新污染物风险处于低风险水平。水厂出水和管网水中均未检出代表性新污染物,表明臭氧活性炭深度处理工艺和膜处理工艺可有效去除上述检出抗生素类新污染物,降低了饮用水新污染物风险。In recent years,with the economic and social development in our country,the attention of the public to emerging pollutants has been increasing,and the emerging pollutants treatment has been elevated to the national strategy level.However,the research on the distribution characteristics of emerging pollutants in China are mainly concentrated in the river,aquaculture areas,and wastewater treatment plants of southern region.In this paper,the entire water supply process of a typical resource-based water shortage coastal city in northern China was selected as the research object.Four main sources including local runoff water,Yellow River water,and the South to North Project water,emergency seawater desalination water were selected,four main water treatment plants and two representative pipe network sampling points were selected,and 23 representative emerging pollutants were detected by using gas chromatography,gas chromatography-mass spectrometry,and liquid chromatography-mass spectrometry,and studied the distribution characteristics.The human health risk assessment was introduced to evaluate the risk of emerging pollutants in water.The detection results showed that two sampling points located at the two sources of local runoff water and Yellow River water mixed with South to North Project water respectively contained 4 and 2 antibiotic-type emerging pollutants,with concentrations ranging from 18 ng/L to 56 ng/L,and the human health risk quotient was 7.7×10^(-4)to 5.4×10^(-3),which was at a low risk level.No representative emerging pollutants were detected in the treatment plants effluent water and pipe network water,indicating that the ozone-activated carbon deep treatment process and membrane treatment process can effectively remove the detected antibiotic-type emerging pollutants and reduce the risk of emerging pollutants in drinking water.

关 键 词：供水全流程 新污染物 抗生素 分布特征 人体健康风险评价 

分 类 号：TU991[建筑科学—市政工程]