Characterization of aquatic humic substances to DBPs formation in advanced treatment processes for conventionally treated water
Characterization of aquatic humic substances to DBPs formation in advanced treatment processes for conventionally treated water
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DOI：
10.1016/j.jhazmat.2006.09.063
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发表时间：
2007-05-08
影响因子：
13.6
通讯作者：
Yu, Myong-Jin
中科院分区：
文献类型：
--
作者：
Hyun-Chul, Kim;Yu, Myong-Jin
运行了由臭氧/颗粒活性炭工艺组成的先进水处理示范厂，以研究该工艺的可行性。通过物理化学分馏方法将示范厂原水和工艺沃茨中的天然有机物（NOM）分离为腐殖酸和非腐殖酸组分，以研究腐殖酸组分的特征（即，腐殖物质（HS）作为主要的卤仿反应物。臭氧没有显着氧化羧酸馏分（从39.1%至35.9%），而GAC去除了一些羧酸馏分（从35.9%至29%）。1%）。三卤甲烷（THMs）的形成潜力相比，卤乙酸的形成潜力（HAAFP）的高度HS的影响。高酚含量的HS氯化产生较高的THMs产率，通过水处理，HS中的酚含量从60.5%逐渐下降到15.8%。通过元素分析、傅里叶变换红外光谱（FT-IR）和核磁共振氢谱（H-1 NMR）分析，确定了HS的结构和功能变化，这些结果相互一致。通过使用A-21树脂获得的功能分布数据可用于支持从光谱分析获得的数据的解释。253 nm和203 nm处的紫外吸光度比值（A（253）/A（203））和DBPFPs/DOC的下降趋势一致，因此，A253/A203比值可能是消毒副产物形成潜力（DBPFPs）的良好指标。(C)2006 Elsevier B. V.保留所有权利。
An advanced water treatment demonstration plant consisted of ozone/granular activated carbon processes was operated to study feasibility of the processes. Natural organic matter (NOM) from raw and process waters at the demonstration plant was isolated into humic and non-humic fractions by physicochemical fractionation method to investigate characteristics of humic fraction (i.e., humic substances, HS) as a predominant haloform reactant. Ozone did not significantly oxidize the carboxylic fraction (from 39.1 to 35.9%), while GAC removed some of the carboxylic fraction (from 35.9 to 29. 1 %). Formation potential of trihalomethanes (THMs) as compared to haloacetic acids formation potential (HAAFP) was highly influenced by HS. Higher yields of THMs resulted from chlorination of HS with a higher phenolic content and phenolic fraction in the HS gradually decreased from 60.5% to 15.8% through the water treatment. The structural and functional changes of HS were identified by elemental, Fourier-transform infrared (FT-IR) and proton nuclear magnetic resonance (H-1 NMR) analyses, and these results were mutually consistent. The functional distribution data obtained by using A-21 resin could be used to support the interpretation of data obtained from the spectroscopic analyses. Decreases in ratio of UV absorbance at 253 nm and 203 nm (A(253)/A(203)) and DBPFPs/DOC showed consistent trends, therefore, A253/A203 ratio may be a good indicator for the disinfection by-product formation potentials (DBPFPs). (C) 2006 Elsevier B.V. All rights reserved.