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典型文献
Insight into the formation of iodinated trihalomethanes during chlorination,monochloramination,and dichloramination of iodide-containing water
文献摘要:
In this study,the formation of iodinated trihalomethanes(I-THMs)was systematically eval-uated and compared for three treatment processes-(ⅰ)chlorination,(ⅱ)monochloramine,and(ⅲ)dichloramination-under different pH conditions.The results demonstrated that I-THM formation decreased in the order of monochloramination>dichloramination>chlori-nation in acidic and neutral pH.However,the generation of I-THMs increased in the dichlo-ramination<chlorination<monochloramination order in alkaline condition.Specifically,the formation of I-THMs increased as pH increased from 5 to 9 during chlorination and monochloramination processes,while the maximum I-THM formation occurred at pH 7 dur-ing dichloramination.The discrepancy could be mainly related to the stability of the three chlor(am)ine disinfectants at different pH conditions.Moreover,in order to gain a thor-ough insight into the mechanisms of I-THM formation during dichloramination,further investigation was conducted on the influencing factors of DOC concentration and Br-/I-molar ratio.I-THM formation exhibited an increasing and then decreasing trend as the con-centration of DOC increased from 1 to 7 mg-C/L,while the yield of I-THMs increased with increasing Br-/I-molar ratio from 5:0 to 5:10.During the three processes mentioned above,similar I-THM formation results were also obtained in real water,which indicates that the excessive generation of I-THMs should be paid special attention during the disinfection of iodide-containing water.
文献关键词:
作者姓名:
Shuang Zhang;Yi-Li Lin;Tian-Yang Zhang;Chen-Yan Hu;Zhi Liu;Zheng-Yu Dong;Meng-Yuan Xu;Bin Xu
作者机构:
State Key Laboratory of Pollution Control and Resource Reuse,Key Laboratory of Yangtze Water Environment,Ministry of Education,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China;Department of Safety,Health and Environmental Engineering,"National"Kaohsiung University of Science and Technology,Kaohsiung 824,Chinese Taipei;College of Environmental and Chemical Engineering,Shanghai University of Electric Power,Shanghai 200090,China
引用格式:
[1]Shuang Zhang;Yi-Li Lin;Tian-Yang Zhang;Chen-Yan Hu;Zhi Liu;Zheng-Yu Dong;Meng-Yuan Xu;Bin Xu-.Insight into the formation of iodinated trihalomethanes during chlorination,monochloramination,and dichloramination of iodide-containing water)[J].环境科学学报(英文版),2022(07):285-294
A类:
iodinated,monochloramination,dichloramination,monochloramine,chlori,dichlo,ramination,thor
B类:
Insight,into,formation,trihalomethanes,during,chlorination,iodide,containing,water,this,study,THMs,was,systematically,eval,uated,compared,three,treatment,processes,under,different,conditions,results,demonstrated,that,decreased,order,acidic,neutral,However,generation,increased,alkaline,Specifically,from,while,maximum,occurred,discrepancy,could,be,mainly,related,stability,disinfectants,Moreover,gain,ough,insight,mechanisms,further,investigation,conducted,influencing,factors,DOC,concentration,Br,molar,exhibited,increasing,then,decreasing,trend,yield,During,mentioned,above,similar,were,also,obtained,real,which,indicates,excessive,should,paid,special,attention,disinfection
AB值:
0.382137
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