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Modeling bromide effects on the speciation of trihalomethanes formation in chlorinated drinking water
K.M. MOK1; H. WONG2; X.J. FAN2
2005
Source PublicationGlobal NEST Journal
ISSN1790-7632
Volume7Issue:1Pages:1-16
Abstract

Speciation behavior of trihalomethanes formation in chlorinated waters due to the effects of bromide is mathematically modeled by a three-tier scheme. Equations for the mole fractions of the mono-, di-, and trihalo-intermediates at each tier level in terms of the initial bromide to chlorine molar ratio are derived and verified by comparison with results of other theoretical studies based on an assumption of constant bromination to chlorination reaction reactivity ratio. It is identified that the usage of applied chlorine concentration or available chlorine concentration for calculation of the relative initial bromide to chlorine concentration would yield different reactivity ratio and should be used consistently. The model equations are also tested by laboratory experiments done with source water at a local plant. It is found that equations with an overall bromination to chlorination rate constant ratio of 18.66 can capture the THM speciation behavior of all four tested incubation periods well.

KeywordTrihalomethanes Drinking Water Speciation Bromide Effects Kinetic Model
DOIhttps://doi.org/10.30955/gnj.000334
URLView the original
Language英语
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Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorK.M. MOK
Affiliation1.Department of Civil and Environmental Engineering University of Macau, Av. Padre Tomás Pereira S.J., Taipa Macau
2.The Macau Water Supply Co. Ltd. 718, Avenida do Conselheir Borja, Macau
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
K.M. MOK,H. WONG,X.J. FAN. Modeling bromide effects on the speciation of trihalomethanes formation in chlorinated drinking water[J]. Global NEST Journal,2005,7(1):1-16.
APA K.M. MOK,H. WONG,&X.J. FAN.(2005).Modeling bromide effects on the speciation of trihalomethanes formation in chlorinated drinking water.Global NEST Journal,7(1),1-16.
MLA K.M. MOK,et al."Modeling bromide effects on the speciation of trihalomethanes formation in chlorinated drinking water".Global NEST Journal 7.1(2005):1-16.
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