Control of bromate and THM precursors using ozonation combined system.

Biomedical and environmental sciences : BES Pub Date : 2007-06-01

Shu-Guang Xie, Dong-Wen Shi, Dong-Hui Wen, Rui Wang, Dan-Li Xi

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Abstract

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 CHCl3FP, but sometimes might increase CHCl2BrFP and CHClBr2FP. The biological activated carbon (BAC) filter could effectively reduce CHCl3FP 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, CHCl3FP, and CHCl2BrFP and also bring bromate under control.

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臭氧化联合系统控制溴酸盐和四氢大麻酚前体。

目的:探讨臭氧氧化联合系统在黄河饮用水中还原四氢大麻酚前体、控制溴酸盐味道和气味的可行性。方法:确定适宜的臭氧用量，评价复合体系中TOC、UV254和THM生成势(THMFP)的变化。结果:1 mg/L的臭氧能有效去除水中的味道和气味，达到饮用水中溴酸盐的最大允许含量。预臭氧化处理能提高THMFP，而常规处理能有效降低异味。生物陶瓷滤料可以部分降低CHCl3FP，但有时会增加CHCl2BrFP和CHClBr2FP。生物活性炭(BAC)滤池能有效降低CHCl3FP和CHCl2BrFP，但增加CHClBr2FP。与其他过滤器相比，新鲜活性炭(FAC)过滤器对THMFP的还原效果更好，甚至对CHClBr2FP的还原效果更好。结论:复合体系能有效降低味道、气味、CHCl3FP和CHCl2BrFP，并能控制溴酸盐。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biomedical and environmental sciences : BES

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