DOI: 10.1016/j.watres.2018.09.054
Scopus记录号: 2-s2.0-85054434302
论文题名: Prioritization of unregulated disinfection by-products in drinking water distribution systems for human health risk mitigation: A critical review
作者: Mian H.R. ; Hu G. ; Hewage K. ; Rodriguez M.J. ; Sadiq R.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 147 起始页码: 112
结束页码: 131
语种: 英语
英文关键词: Concentration level
; Drinking water distribution systems
; Prioritization
; Reported frequency
; Toxicity
; Unregulated disinfection by-products
英文摘要: Water disinfection involves the use of different types of disinfectants, which are oxidizing agents that react with natural organic matter (NOM) to form disinfection by-products (DBPs). The United States Environmental Protection Agency (USEPA) has established threshold limits on some DBPs, which are known as regulated DBPs (R-DBPs). The human health risks associated with R-DBPs in drinking water distribution systems (DWDSs) and application of stricter regulations have led water utilities to switch from conventional disinfectant (i.e., chlorination) to alternative disinfectants. However, the use of alternative disinfectants causes formation of a new suit of DBPs known as unregulated DBPs (UR-DBPs), which in many cases can be more toxic. There is a growing concern of UR-DBPs formation in drinking water. This review prioritizes some commonly occurring UR-DBP groups and species in DWDSs based on their concentration level, reported frequency, and toxicity using an indexing method. There are nine UR-DBPs group and 36 species that have been identified based on recent published peer-reviewed articles. Haloacetonitriles (HANs) and haloacetaldehydes (HALs) are identified as important UR-DBP groups. Dichloroacetonitrile (DCAN) and trichloroacetaldehye (TCAL) are identified as critical UR-DBPs species. The outcomes of this review can help water regulators to identify the most critical UR-DBPs species in the context of drinking water safety and provide them with useful information to develop guidelines or threshold limits for UR-DBPs. The outcomes can also help water utilities in selecting water treatment processes for the mitigation of human health risk posed by UR-DBPs through drinking water. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112356
Appears in Collections: 气候减缓与适应
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作者单位: School of Engineering, The University of British Columbia, Okanagan, 3333 University Way, Kelowna, BC V1V 1V7, Canada; École Supérieure D'aménagement du Territoire et Développement Régional (ESAD), 2325, allée des Bibliothèque Université Laval, Québec City, QC G1V 0A6, Canada
Recommended Citation:
Mian H.R.,Hu G.,Hewage K.,et al. Prioritization of unregulated disinfection by-products in drinking water distribution systems for human health risk mitigation: A critical review[J]. Water Research,2018-01-01,147