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CLC number: TU991.2; X5

On-line Access: 2010-08-02

Received: 2010-04-16

Revision Accepted: 2010-06-22

Crosschecked: 2010-07-12

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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.8 P.606-612

http://doi.org/10.1631/jzus.A1000100


Factors affecting the formation of trihalomethanes in the presence of bromide during chloramination


Author(s):  Yong-ji Zhang, Ling-ling Zhou, Guo Zeng, Zheng-guo Song, Gui-bai Li

Affiliation(s):  Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

Corresponding email(s):   zhangyongji@tongji.edu.cn

Key Words:  Trihalomethanes (THMs), Humic acid (HA), Bromide, Monochloramine


Yong-ji Zhang, Ling-ling Zhou, Guo Zeng, Zheng-guo Song, Gui-bai Li. Factors affecting the formation of trihalomethanes in the presence of bromide during chloramination[J]. Journal of Zhejiang University Science A, 2010, 11(8): 606-612.

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author="Yong-ji Zhang, Ling-ling Zhou, Guo Zeng, Zheng-guo Song, Gui-bai Li",
journal="Journal of Zhejiang University Science A",
volume="11",
number="8",
pages="606-612",
year="2010",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1000100"
}

%0 Journal Article
%T Factors affecting the formation of trihalomethanes in the presence of bromide during chloramination
%A Yong-ji Zhang
%A Ling-ling Zhou
%A Guo Zeng
%A Zheng-guo Song
%A Gui-bai Li
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 8
%P 606-612
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000100

TY - JOUR
T1 - Factors affecting the formation of trihalomethanes in the presence of bromide during chloramination
A1 - Yong-ji Zhang
A1 - Ling-ling Zhou
A1 - Guo Zeng
A1 - Zheng-guo Song
A1 - Gui-bai Li
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 8
SP - 606
EP - 612
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000100


Abstract: 
The effects of the concentration of dissolved total organic carbon (TOC), the TOC/Br ratio, bromide ion levels, the chlorine to ammonia-N ratio (Cl:N), the monochloramine dose and the chlorine dose on the formation of trihalomethanes (THMs) (including chloroform, bromodichloromethane, chlorodibromomethane, and bromoform) from chlorination were investigated using aqueous humic acid (HA) solutions. The profile of the chloramine decay was also studied under various bromide ion concentrations. monochloramine decayed in the presence of organic material and bromide ions. The percentage of chloroform and brominated THMs varied according to the TOC/Br ratio. Total THMs (TTHMs) formation increased from 112 to 190 μg/L with the increase concentrations of bromide ions from 0.67 to 6.72 mg/L, but the chlorine-substituted THMs were replaced by bromine-substituted THMs. A strong linear correlation was obtained between the monochloramine dose and the formation of THMs for Cl:N ratios of 3:1 and 5:1. These ratios had a distinct effect on the formation of chloroform but had little impact on the formation of bromodichloromethane or chlorodibromomethane. The presence of bromide ions increased the rate of monochloramine decay.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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