Formation control of bromate and trihalomethanes during ozonation of bromide-containing water with chemical addition: Hydrogen peroxide or ammonia?

作     者：Zhengdi Wu Yubin Tang Weiwei Li Zhimin Qiang Huiyu Dong Zhengdi Wu;Yubin Tang;Weiwei Li;Zhimin Qiang;Huiyu Dong

作者机构：Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiang 212100China Engineering Design InstituteThe Sixth Engineering Bure CrecBeijing 100036China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2021年第33卷第12期

页      面：111-118页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51878648,52070184) the National Key Research and Development Program of China(No.2019YFD1100100) 

主　　题：Bromate Trihalomethanes Ozone Hydrogen peroxide Ammonia Water treatment 

摘      要：To ensure the safety of drinking water,ozone (O3) has been extensively applied in drinking water treatment plants to further remove natural organic matter (NOM).However,the surface water and groundwater near the coastal areas often contain high concentrations of bromide ion (Br-).Considering the risk of bromate (Br O3-) formation in ozonation of the sand-filtered water,the inhibitory efficiencies of hydrogen peroxide (H2O2) and ammonia(NH3) on Br O3-formation during ozonation process were *** addition of H2O2effectively inhibited Br O3-formation at an initial Br-concentration amended to 350μg/*** inhibition efficiencies reached 59.6 and 100%when the mass ratio of H2O2/O3was 0.25and0.5,*** UV254and total organic carbon (TOC) also decreased after adding H2O2,while the formation potential of trihalomethanes (THMs FP) increased especially in subsequent chlorination process at a low dose of *** control the formation of both Br O3-and THMs,a relatively large dose of O3and a high ratio of H2O2/O3were generally ***3addition inhibited Br O3-formation when the background ammonia nitrogen(NH3–N) concentration was *** was no significant correlation between Br O3-inhibition efficiency and NH3dose,and a small amount of NH3–N (0.2 mg/L) could obviously inhibit Br *** oxidation of NOM seemed unaffected by NH3addition,and the structure of NOM reflected by synchronous fluorescence (SF) scanning remained almost unchanged before and after adding *** the formation of Br O3-and THMs,the optimal dose of NH3was suggested to be 0.5 mg/L.