The variation of DOM during long distance water transport by the China South to North Water Diversion Scheme and impact on drinking water treatment  

作　　者：Hankun Yang Yujuan Li Hongyu Liu Nigel J.D.Graham Xue Wu Jiawei Hou Mengjie Liu Wenyu Wang Wenzheng Yu 

机构地区：[1]State Key Laboratory of Environmental Aquatic Chemistry,Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China [2]School of Environment and Municipal Engineering,Qingdao Technological University,Qingdao,266033,China [3]Colleges of Forestry,Northeast Forestry University,Harbin,150006,China [4]Department of Civil and Environmental Engineering,Imperial College London,South Kensington Campus,London,SW7 2AZ,UK [5]School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing,100081,China [6]State Key Laboratory of Separation Membrane Processes,School of Environment Science and Engineering,Tiangong University,Tianjin,300387,China

出　　处：《Frontiers of Environmental Science & Engineering》2024年第5期85-100,共16页环境科学与工程前沿（英文）

基　　金：funded by the Beijing Natural Science Foundation(China)(No.JQ21032);the National Natural Science Foundation of China(Nos.52200026 and 52200027).

摘　　要：In this study,samples were taken from three locations,upstream to downstream,along the central route project of the China South to North Water Diversion(SNWD)scheme in summer and winter.These were used to reveal the variations of dissolved organic matter(DOM)during the water transfer process,and the effects of these variations on drinking water treatment and disinfection by-products formation potential(DBPs-FP).The results showed that polysaccharides accumulate in summer and reduce in winter with flow distance,which has an important effect on the overall properties of DOM,as well as on the performance of coagulation,ultrafiltration,and the formation of DBPs.Humic substances,and their hydrophilic content,also increased in summer and decreased in winter with flow distance.In contrast,the concentration of small organic substances(MW≤1000 Da)increased in both summer and winter with flow distance,which affected both nanofiltration(NF)membrane fouling and DBPs-FP.The results provide a useful case study of spatial and temporal changes in raw water DOM during long distance water transfer and their impact on the treatment and quality of drinking water from the SNWD.

关 键 词：Long-distance water transfer The China South to North Water Diversion Scheme COAGULATION Membrane filtration Disinfection by-products 

分 类 号：F323[经济管理—产业经济] X322[环境科学与工程—环境工程]