DOI: 10.1016/j.watres.2017.12.019
Scopus记录号: 2-s2.0-85038012021
论文题名: Effects of conventional ozonation and electro-peroxone pretreatment of surface water on disinfection by-product formation during subsequent chlorination
作者: Mao Y. ; Guo D. ; Yao W. ; Wang X. ; Yang H. ; Xie Y.F. ; Komarneni S. ; Yu G. ; Wang Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 322
结束页码: 332
语种: 英语
英文关键词: Bromate
; Chlorination
; Disinfection by-products
; Electrochemical advanced oxidation process
; HAAs
; THMs
Scopus关键词: Biological materials
; Byproducts
; Chlorination
; Disinfection
; Lead removal (water treatment)
; Organic carbon
; Ozone
; Ozonization
; Surface waters
; Bromate
; Disinfection by-product
; Electrochemical advanced oxidation process
; HAAs
; THMs
; Ozone water treatment
; acetic acid
; bromate
; bromide
; dissolved organic matter
; drinking water
; haloacetic acid
; hydrogen peroxide
; hydroxyl radical
; natural organic matter
; organic carbon
; ozone
; surface water
; trihalomethane
; unclassified drug
; water
; chlorination
; disinfection
; electrochemical method
; electrochemistry
; hydrogen peroxide
; oxidation
; surface water
; water treatment
; Article
; bromination
; chlorination
; controlled study
; decomposition
; disinfection
; electro peroxone process
; electrolysis
; oxidation
; ozonation
; priority journal
; radiation absorption
; reaction time
; species differentiation
; ultraviolet radiation
; analysis
; chemistry
; disinfection
; electrochemical analysis
; halogenation
; procedures
; water management
; water pollutant
; Bromates
; Bromides
; Disinfection
; Electrochemical Techniques
; Halogenation
; Hydrogen Peroxide
; Hydroxyl Radical
; Ozone
; Trihalomethanes
; Water Pollutants, Chemical
; Water Purification
英文摘要: The electro-peroxone (E-peroxone) process is an emerging ozone-based electrochemical advanced oxidation process that combines conventional ozonation with in-situ cathodic hydrogen peroxide (H2O2) production for oxidative water treatment. In this study, the effects of the E-peroxone pretreatment on disinfection by-product (DBP) formation from chlorination of a synthetic surface water were investigated and compared to conventional ozonation. Results show that due to the enhanced transformation of ozone (O3) to hydroxyl radicals ([rad]OH) by electro-generated H2O2, the E-peroxone process considerably enhanced dissolved organic carbon (DOC) abatement and significantly reduced bromate (BrO3 −) formation compared to conventional ozonation. However, natural organic matter (NOM) with high UV254 absorbance, which is the major precursors of chlorination DBPs, was less efficiently abated during the E-peroxone process than conventional ozonation. Consequently, while both conventional ozonation and the E-peroxone process substantially reduced the formation of DBPs (trihalomethanes and haloacetic acids) during post-chlorination, higher DBP concentrations were generally observed during chlorination of the E-peroxone pretreated waters than conventional ozonation treated. In addition, because of conventional ozonation or the E-peroxone treatment, DBPs formed during post-chlorination shifted to more brominated species. The overall yields of brominated DBPs exhibited strong correlations with the bromide concentrations in water. Therefore, while the E-peroxone process can effectively suppress bromide transformation to bromate, it may lead to higher formation of brominated DBPs during post-chlorination compared to conventional ozonation. These results suggest that the E-peroxone process can lead to different DBP formation and speciation during water treatment trains compared to conventional ozonation. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113036
Appears in Collections: 气候减缓与适应
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作者单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; Environmental Engineering Programs, The Pennsylvania State University, Middletown, PA 17057, United States; Department of Ecosystem Science and Management and Material Research Institute, The Pennsylvania State University, 205 MRL Building, University Park, PA 16802, United States
Recommended Citation:
Mao Y.,Guo D.,Yao W.,et al. Effects of conventional ozonation and electro-peroxone pretreatment of surface water on disinfection by-product formation during subsequent chlorination[J]. Water Research,2018-01-01,130