Disinfection byproduct formation from algal organic matters after ozonation or ozone combined with activated carbon treatment with subsequent chlorination  

作　　者：Qiufeng Lin Feilong Dong Cong Li Junkui Cui 

机构地区：[1]School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai,200433,China [2]Department of Earth and Environmental Studies,Montclair State University,Montclair,New Jersey 07043,United States [3]College of Environment,Zhejiang University of Technology,Hangzhou,310032,China

出　　处：《Journal of Environmental Sciences》2021年第6期233-241,共9页环境科学学报（英文版）

基　　金：supported by the Shanghai Natural Science Foundation(No.20ZR1438200);the National Natural Science Foundation of China(No.51778565);the National Major Projects for Water Pollution Control and Treatment(No.2017ZX07201003)。

摘　　要：Algal organic matter(AOM),including extracellular organic matter(EOM)and intracellular organic matter(IOM)from algal blooms,is widely accepted as essential precursors of disinfection byproducts(DBPs).This study evaluated the effect of ozonation or ozone combined with activated carbon(O_(3)-AC)treatment on characteristic alternation and DBP formation with subsequent chlorination of Chlorella sp..The effects of p H and bromide concentration on DBP formation by ozonation or O_(3)-AC treatment were also investigated.Results showed that the potential formation of DBPs might be attributed to ozonation,but these DBP precursors could be further removed by activated carbon(AC)treatment.Moreover,the formation of target DBPs was controlled at acidic pH by alleviating the reactions between chlorine and AOM.Besides,the bromide substitution factor(BSF)value of trihalomethanes(THMs)from EOM and IOM remained constant after AC treatment.However,THM precursors could be significantly decreased by AC treatment.The above results indicated that O_(3)-AC was a feasible treatment method for algal-impacted water.

关 键 词：Ozone combined with activated carbon treatment Chlorella sp. Disinfection byproducts PH Bromide substitution factor 

分 类 号：TU991.25[建筑科学—市政工程]