Natural organic matter and formation of trihalomethanes in two water treatment processes
H. Wong1; K.M. Mok2; X.J. Fan1
2007-06-10
Conference Name9th Environmental Science and Technology Symposium
Source PublicationDesalination
Volume210
Issue1-3
Pages44-51
Conference DateSeptember 1–3, 2005
Conference PlaceRhodes, Greece
PublisherUNIV AEGEAN, VOULGAROKTONOU 30, ATHENS 114 72, GREECE
Abstract

The investigation involved the study of performance of two local plants’ slightly different treatment processes for the removal of natural organic matter (NOM) which comprises trihalomethane (THM) precursors. Ultrafiltration separated the contained NOM into various apparent molecular weight (AMW) fractions to reveal the two processes NOM removal efficiencies, in terms of dissolved organic carbon (DOC), UV absorbance (UV254) and THM formation potential (THMFP). DOC and UV254 levels of source water at both plants tested low and they concentrated in the portion with AMW less than 3,000 Daltons. The combined expression of UV254 with DOC as specific ultraviolet light absorbance (SUVA) indicated that the source water of Macau had a value less than 3 L/mg-m. Therefore the main DOC content was fulvic in character, which is difficult to remove and favors the formation of brominated THMs. Low DOC removal percentages recorded in both processes confirm this observation. However, both processes showed similar removal efficiency of around 50% on humic substances and THM precursors quantified by measurements of UV254 and THMFP, respectively

KeywordNatural Organic Matter Humic Substance Trihalomethanes Water Treatment Process Chlorination
DOIhttps://doi.org/10.1016/j.desal.2006.05.031
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000237753600254
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Affiliation1.The Macau Water Supply Co. Ltd., 718, Avenida do Conselheiro Borja, Macau SAR, China
2.University of Macau, Faculty of Science and Technology, Department of Civil and Environmental Engineering, Av. Padre Tomás Pereira S.J., Taipa, Macau SAR, China
Recommended Citation
GB/T 7714
H. Wong,K.M. Mok,X.J. Fan. Natural organic matter and formation of trihalomethanes in two water treatment processes[C]:UNIV AEGEAN, VOULGAROKTONOU 30, ATHENS 114 72, GREECE,2007:44-51.
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