我国典型水源地N-DBPs生成势及生态风险评价  

Formation Potential of N-DBPs and Assessment of Ecological Risks in Typical Water Sources at Home

作　　者：袁炘玥 肖玉冰 欧子旋 冯骞[1,2] YUAN Xinyue;XIAO Yubing;OU Zixuan;FENG Qian(Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China;The First Construction Management Agency,Nanjing 210003,China)

机构地区：[1]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098 [2]河海大学环境学院,江苏南京210098 [3]第一工程代建管理办公室,江苏南京210003

出　　处：《净水技术》2024年第2期7-16,125,共11页Water Purification Technology

基　　金：国家自然科学基金(51978238)。

摘　　要：随着含氮消毒副产物(N-DBPs)的基因毒性和细胞毒性受到重视,饮用水中的N-DBPs产生和生态风险的研究成为近年的关注热点。文章基于前人研究分析,研究了我国典型水源地中N-DBPs生成势的空间分布特征,采用风险熵值法,对我国典型水源地N-DBPs的潜在生成生态风险进行了评估,还关注了有机物指标与N-DBPs生成势之间的关系。结果表明:DON与N-DBPs生成势的分布特点均存在地域差异,总体表现为在东部沿海城市呈现南北高、中部低、东部地区高于其他地区、经济发达地区高于其他地区、珠三角地区高于其他地区的特点。结合生态风险的评价方法,利用现有数据进行初步估计,发现部分城市水源地生态风险呈现低风险,水库水源N-DBPs的生态风险一般高于河流水源。UV_(254)与N-DBPs生成势相关性较好,可以作为N-DBPs生成势的替代性指标。研究结果将为做好我国水源地的修复与保护、保障居民饮水安全提供重要的支撑。With paying more attention to the genotoxicity and cytotoxicity of nitrogen-containing disinfection by-products(N-DBPs),the research on the ecological risk of the generation and control of N-DBPs in drinking water has become a hot spot of concern in recent years.Based on the analysis of previous research,the spatial distribution characteristics of N-DBPs in typical water sources is studied at home,and evaluate the potential ecological risk of N-DBPs in typical water sources at home by using the method of risk quotient,and also focus on the relationship between organic index and N-DBPs.The results show that there were regional differences in the distribution characteristics of DON and N-DBPs,which are generally characterized by high in the north and south,low central,higher in the eastern region,higher in the economically developed region and higher in the Pearl River Delta region in the eastern coastal cities.Combined with the evaluation method of ecological risk,using the existing data to make a preliminary estimation,it is found that the ecological risk of some urban water sources presents low risk,and the ecological risk of reservoir water source N-DBPs is generally higher than that of river water source.UV_(254) had a good correlation with the potential of N-DBPs,and can be used as an alternative index of the potential of N-DBPs.The research results can provide important support for the good restoration and protection of water sources at home and ensure the safety of drinking water.

关 键 词：含氮消毒副产物(N-DBPs) 水源地 含氮有机物 空间分布 UV_(254) 

分 类 号：X52[环境科学与工程—环境工程]