供水管道中金属污染物富集与释放研究进展  

Research Progress on Enrichment and Release of Metal Pollutants in Water Supply Pipelines

作　　者：何楠 郭浩 刘菁 褚献献 贾世超 田一梅[1] HE Nan;GUO Hao;LIU Jing;CHU Xian-xian;JIA Shi-chao;TIAN Yi-mei(School of Environmental Science and Engineering,Tianjin University,Tianjin 300350,China;The Institute of Seawater Desalination and Multipurpose Utilization,MNR,Tianjin 300192,China)

机构地区：[1]天津大学环境科学与工程学院,天津300350 [2]自然资源部天津海水淡化与综合利用研究所,天津300192

出　　处：《中国给水排水》2022年第2期21-29,共9页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51778409);国家自然科学基金青年科学基金资助项目(51808158)。

摘　　要：在一系列物理、化学和生物作用下,金属管道腐蚀产生金属污染物,同时出厂水中的微量金属污染物在管网输配中可能沉积到管壁。当管道水的环境条件发生变化时,金属污染物则从沉积物中直接释放或随其他金属氧化物一同释放至水中,对饮水安全构成潜在危害。归纳了管道腐蚀沉积物中金属污染物在沿程及管壁方向上的分布及存在形式等特征,阐述了水质、水力、微生物和消毒剂对金属污染物富集与释放过程的影响,梳理了沉积物富集与释放金属污染物的机理;最后基于研究现状展望未来的研究方向,以期为保障饮水安全、完善相关研究提供参考和帮助。Under a series of physical,chemical,and biological actions,metal pollutants were generated during the corrosion of metal pipes.Meanwhile,trace metal pollutants in the finished water may deposit on the pipe wall during the distribution of drinking water.When the environmental conditions of water in pipelines change,the metal pollutants were directly released from the deposits or released into the water by other metal oxides,which poses a potential threat to drinking water safety.The characteristics of metal pollutants in the deposits of pipeline corrosion is reviewed,which may exist in the pipeline and/or on the pipeline wall,and their forms are summarized.The effects of water quality,hydraulic,microorganisms and disinfectants on the enrichment and release process of metal pollutant are explored,and the mechanisms of enrichment and release of metal pollutants from the deposits are discussed.Finally,based on the research status,the future research direction is proposed to provide reference and help to ensure water safety and improve related research.

关 键 词：供水管道 腐蚀沉积物 金属污染物 

分 类 号：TU991[建筑科学—市政工程]