融贯三步法甄别再生水优先控制污染物  

Integrated Three-steps Method for Identifying Priority Pollutants in Reclaimed Water

作　　者：王飞鹏 彭霜 桂源 安麒文 赵晓宇 魏东斌[1,2] 杜宇国 WANG Fei-peng;PENG Shuang;GUI Yuan;AN Qi-wen;ZHAO Xiao-yu;WEI Dong-bin;DU Yu-guo(State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 237016,China)

机构地区：[1]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085 [2]中国科学院大学,北京100049 [3]山西大学化学化工学院,太原237016

出　　处：《环境科学》2024年第11期6565-6573,共9页Environmental Science

基　　金：国家自然科学基金重大项目(52293444)。

摘　　要：再生水中残留的痕量有机污染物(TrOCs)为数较多,可能导致再生水长期利用过程中的潜在生态健康风险,目前尚缺乏TrOCs相关的控制标准.为防控再生水利用中TrOCs引起的潜在风险,提出了融贯三步法(EHL)以甄别再生水优先控制有机污染物.该法遵循3个步骤:首先,结合Meta分析对再生水中TrOCs进行暴露评估,建立再生水TrOCs暴露数据库(E);然后,基于共识机制从E数据库中筛选出关注程度较高的危害污染物,建立高关注TrOCs数据集(H);最后,计算H数据集中候选物的风险商,并根据风险商排序结果推荐需优先控制的高风险TrOCs清单(L).为说明EHL法的流程,基于近30 a的文献数据甄别了我国再生水优先控制污染物,筛选并列举了我国再生水中的32种高关注污染物,并从中推荐甲醛、邻苯二甲酸二(2-乙基己基)酯、17β-雌二醇、红霉素、磺胺甲噁唑和布洛芬等6种最高风险的TrOCs作为再生水优先控制污染物执行清单.EHL法可准确且高效甄别再生水优先控制污染物,进而支持水质安全评价与管理.Trace organic contaminants(TrOCs)in reclaimed water can pose potential ecological and health risks during long-term reuse,but the current water quality standards have not restricted their limits.For preventing and controlling the potential risks from TrOCs,an integrated method EHL for identifying priority pollutants in reclaimed water was proposed.This method followed three steps:First,a meta-analysis was performed to assess the exposure of TrOCs in reclaimed water,and a database of TrOCs exposure(E)was established.Then,those hazardous pollutants of particular concern were selected from the E database based on the consensus mechanism,and a dataset of hazardous TrOCs(H)in reclaimed water was established.Finally,the risk quotient of candidates in the H dataset was calculated,and according to the risk-based prioritizing,a final list of priority TrOCs(L)in reclaimed water was recommended.To determine the procedure of EHL,the priority pollutants for reclaimed water in China were identified.Based on literature data from the past 30 years,a total of 32 TrOCs of high concern were selected.Six TrOCs with the highest risk were recommended as an executive priority list for reclaimed water management,including formaldehyde,bis(2-ethylhexyl)phthalate(DEHP),17β-estradiol,erythromycin,sulfamethoxazole,and ibuprofen.The EHL method could effectively identify the priority pollutants in reclaimed water and other water environments,and it is expected to play a crucial role in water quality safety evaluation and management.

关 键 词：再生水 痕量有机污染物(TrOCs) 生态健康风险 优先控制污染物 风险商 

分 类 号：X52[环境科学与工程—环境工程]