Control of Bromate and THM Precursors Using Ozonation Combined System

作     者：SHU-GUANG XIE DONG-WEN SHI DONG-HUI WEN RUI WANG DAN-LI XI 

作者机构：Department of Environmental Sciences College of Environmental Sciences Peking University Beijing 100871 China School of Environmental Sciences and Engineering Donghua University Shanghai 200051 China Zhenzhou Water Supply Corp. Zhengzhou 450013 Henan China 

出 版 物：《Biomedical and Environmental Sciences》 (生物医学与环境科学（英文版）)

年 卷 期：2007年第20卷第3期

页      面：217-225页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：This research was supported by National Natural Science Foundation of China (No. 50408006) 

主　　题：Bromate Ozonation Disinfection by-products Activated carbon 

摘      要：Objective To investigate the feasibility of reducing THM precursors and controlling bromate taste and odor in drinking water taken from the Yellow River by an ozonation combined system. Methods The appropriate ozone dosage was determined, and then the changes of TOC, UV254 and THM formation potential （THMFP） in the combined system were evaluated. Results One mg/L ozone could effectively remove taste and odor and meet the maximum allowable bromate level in drinking water. The pre-ozonation increased THMFP, but the conventional treatment system could effectively reduce the odor. The bio-ceramic filter could partly reduce CHC13FP, but sometimes might increase CHCl2BrFP and CHClBr2FP. The biological activated carbon （BAC） filter could effectively reduce CHC13FP and CHCl2BrFP, but increase CHClBr2FP. Compared with other filters, the fresh activated carbon （FAC） filter performed better in reducing THMFP and even reduced CHClBr2FP. Conclusion The combined system can effectively reduce taste, odor, CHC13FP, and CHCl2BrFP and also bring bromate under control.