Relating freshwater organic matter fluorescence to organic carbon removal efficiency in drinking water treatment
Relating freshwater organic matter fluorescence to organic carbon removal efficiency in drinking water treatment
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DOI：
10.1016/j.scitotenv.2008.11.013
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发表时间：
2009-02-15
影响因子：
9.8
通讯作者：
Bridgeman, John
中科院分区：
文献类型：
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作者：
Bieroza, Magdalena;Baker, Andy;Bridgeman, John
每月为英国16个地表水处理厂采集原水和澄清水样本。采用荧光激发发射矩阵（EEM）技术评价了总有机碳（TOC）去除率和有机物（OM）表征。分析了水中藻类存在对TOC去除率的影响及其与荧光的关系。荧光峰C强度是测定OM含量的一种灵敏可靠的方法。发现荧光峰C发射波长和峰T强度（分别反映疏水程度和微生物组分）表征OM；两者对TOC去除效率的影响都很明显。OM荧光性质被证明可以预测TOC的去除，并确定空间和时间变化。前人的研究表明，可以通过原水TOC浓度预测处理水的三卤甲烷（THM）浓度。简单、灵敏、分析速度快、成本低，再加上与在线监测系统相结合的潜力，意味着荧光光谱提供了一种强大的分析技术，可以与其他方法一起使用，或者代替其他方法来表征OM和THM形成预测。(C) 2008 Elsevier B.V.版权所有
Monthly raw and clarified water samples were obtained for 16 UK surface water treatment works. The fluorescence excitation-emission matrix (EEM) technique was used for the assessment of total organic carbon (TOC) removal and organic matter (OM) characterisation. The impact of algae presence in water on TOC removal, and its relationship with fluorescence, was analysed. Fluorescence peak C intensity was found to be a sensitive and reliable measure of OM content. Fluorescence peak C emission wavelength and peak T intensity (reflecting the degree of hydrophobicity and the microbial fraction, respectively) were found to characterize the OM; the impact of both on TOC removal efficiency was apparent. OM fluorescence properties were shown to predict TOC removal, and identify spatial and temporal variations. Previous work indicates that the trihalomethane (THM) concentration of treated water can be predicted from the raw water TOC concentration. The simplicity, sensitivity, speed of analysis and low cost, combined with potential for incorporation into on-line monitoring systems, mean that fluorescence spectroscopy offers a robust analytical technique to be used in conjunction with, or in place of, other approaches to OM characterisation and THM formation prediction. (C) 2008 Elsevier B.V. All rights reserved.