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A Study on Formation Pattern of DBPs by Disinfection of Drinking Raw Water II
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2004, v.17 no.1, pp.69-81
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(2004). A Study on Formation Pattern of DBPs by Disinfection of Drinking Raw Water II. Analytical Science and Technology, 17(1), 69-81.
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Abstract
The formation pattern of DBPs (disinfection by-products) in raw water treated with hypochlorite, chlorine disinfectant was studied. TOC (total organic carbon), residual chlorine, turbidity and 14 DBPs in raw water from Han-river and Nakdong river during 1 ～ 14 days were determined. Total DBPs in Han river was 101.3 ng/mL (789.6 nM) after 7days and THMs (trihalomethanes) are the dominant portion of 68%. HAAs (haloacetic acids) and chloral hydrate were determined 19% and 10% respectively. In Nakdong river total DBPs was 98.4 ng/mL (678.6 nM) and dominant class was HAAs. (55.8 ng/mL, 57%) THMs(34%) and N-compounds like HANs (haloacetonitriles, 5%) and chloropicrin were increased. It may be explained that high concentration of NH4-N in Nakdong river react with chlorine produced chloramine and this formed different pattern of DBPs. As a result, total DBPs formation pattern depends on raw water and disinfectant and in generally the initial concentration of acidic HAAs was high and THMs was increased gradually.
- keywords
- chlorinated disinfection byproducts, THMs, HAAs, HANs
Reference
1
(1991) Ozone in Water treatment, Lewis Publishers
2
(1976) National Cancer Institute Report on Carcinogenesis Bioassay of Chloroform Division of Cancer Cause and Prevention,
3
환경부, 수질보전국 수질정책과 2002년도 하천수 수질현황 (한강수계) 공개자료.,
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