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首页> 外文期刊>Water >Characteristics of DOM and Removal of DBPs Precursors across O3-BAC Integrated Treatment for the Micro-Polluted Raw Water of the Huangpu River
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Characteristics of DOM and Removal of DBPs Precursors across O3-BAC Integrated Treatment for the Micro-Polluted Raw Water of the Huangpu River

机译：黄浦江微污染原水O 3 -BAC综合处理中DOM的特征和DBPs的去除

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The aim of this study is to determine the impact upon dissolved organic matter (DOM) and removal of disinfection by-product (DBP) precursors of adding an ozone-biological activated carbon (O3-BAC) process after the conventional treatment process (CTP) using water from the Huangpu River in Shanghai, east China. Several metrics, including size fractionation, dissolved organic carbon (DOC) and trihalomethane formation potential (THMFP), were employed to accomplish this goal. In the raw water collected from the Huangpu River, the low molecular weight (MW) molecules (MW 3 kDa) were absolutely dominant in DOM, accounting for more than 55% of total DOC, and the DOM resulted in a high THMFP level of 472.91 ± 4.63 µg/L after an excessive chlorination. The CTP reduced high MW molecules (MW 10 kDa) by 61% and the low MW molecules (MW 3 kDa) by only 8%. The O3-BAC presented an accumulated DOC removal efficiency of approximately 50%, in particular, showing a high degree of the removal effectiveness of low MW molecules. Samplings from the CTP, ozone and BAC were subjected to excessive chlorination to determine the THMFP, and the measured concentrations were 211.89 ± 4.58 µg/L, 169.52 ± 4.55 µg/L, and 124.42 ± 4.27 µg/L, respectively. Therefore, coupled with the THMFP removal rate of 74%, the addition of the O3-BAC process after an existing CTP improved the water quality of the effluent, particularly, in terms of the improved reduction in the precursors of DBPs.
机译：这项研究的目的是确定加入臭氧生物活性炭（O 3 -BAC）工艺对溶解性有机物（DOM）的影响以及消毒副产物（DBP）前驱物的去除经过使用华东上海黄浦江的水进行常规处理后（CTP）。几个指标，包括粒度分级，溶解有机碳（DOC）和三卤甲烷形成潜力（THMFP），被用来实现这一目标。在黄浦江收集的原水中，低分子量（MW）分子（MW <3 kDa）在DOM中绝对占主导地位，占总DOC的55％以上，而DOM导致THMFP水平较高。过量氯化后为472.91±4.63 µg / L。 CTP将高分子量分子（MW> 10 kDa）降低了61％，而低分子量分子（MW <3 kDa）仅降低了8％。 O 3 -BAC的累积DOC去除效率约为50％，特别是低分子量分子的去除效率很高。对CTP，臭氧和BAC的样品进行了过量的氯化，以确定THMFP，测得的浓度分别为211.89±4.58 µg / L，169.52±4.55 µg / L和124.42±4.27 µg / L。因此，再加上THMFP去除率为74％，在现有的CTP之后添加O 3 -BAC工艺可以改善废水的水质，特别是在减少废水排放方面， DBP的前身。

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