RCEES OpenIR  > 环境水质学国家重点实验室
Competitive removal of DOM and bromide in raw waters by MIEX and iron coagulation
Xu, Zhizhen; Jiao, Ruyuan; Yan, Xiaomin; Wang, Dongsheng; Drikas, Mary; Morran, Jim; Wang, DS
2013
Source PublicationWATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
Volume13Issue:1Pages:123-129
AbstractDissolved organic matter (DOM) and bromide as principal precursors to halogenated disinfection byproducts (DBPs) have potential risks on the safety of drinking water after disinfection. Removal of DOM and bromide in raw water from two different waterworks using magnetic ion exchange resin (MIEX), ferric coagulation and their combination was investigated. Results showed that as MIEX dose increased, DOM and bromide coexisting in raw water could be removed effectively. DOM tended to be mainly removed by MIEX at low dose (<4 mL/L), regardless of the bromide concentration. Bromide could compete for exchange sites with DOM at high MIEX dosage (>4 mL/L). The fluorescence spectra and high performance size-exclusion chromatogram analysis indicated that at low MIEX dosage, bromide decreased the removal of low molecular weight (MW), soluble microbial byproduct-like and aromatic protein-like organic matters, which had lower affinity with MIEX in raw water. The removal of high MW humic acid, which presented greater affinity with MIEX, was not influenced at low MIEX dose but decreased at high MIEX dose with the addition of bromide. The combination of MIEX and ferric coagulation significantly enhanced the removal of DOM and reduced the requisite ferric dose by at least 67% compared to coagulation alone.
Department环境水质学国家重点实验室
Indexed BySCI
WOS IDWOS:000334242900013
Citation statistics
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/7394
Collection环境水质学国家重点实验室
Corresponding AuthorWang, DS
Recommended Citation
GB/T 7714
Xu, Zhizhen,Jiao, Ruyuan,Yan, Xiaomin,et al. Competitive removal of DOM and bromide in raw waters by MIEX and iron coagulation[J]. WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,2013,13(1):123-129.
APA Xu, Zhizhen.,Jiao, Ruyuan.,Yan, Xiaomin.,Wang, Dongsheng.,Drikas, Mary.,...&Wang, DS.(2013).Competitive removal of DOM and bromide in raw waters by MIEX and iron coagulation.WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY,13(1),123-129.
MLA Xu, Zhizhen,et al."Competitive removal of DOM and bromide in raw waters by MIEX and iron coagulation".WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY 13.1(2013):123-129.
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