DOI: 10.1016/j.watres.2017.11.052
Scopus记录号: 2-s2.0-85035772867
论文题名: Effective removal of bromate in nitrate-reducing anoxic zones during managed aquifer recharge for drinking water treatment: Laboratory-scale simulations
作者: Wang F. ; van Halem D. ; Ding L. ; Bai Y. ; Lekkerkerker-Teunissen K. ; van der Hoek J.P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 88
结束页码: 97
语种: 英语
英文关键词: Bromate
; Denitrifying bacteria
; Managed aquifer recharge
; Nitrate
; Ozonation
Scopus关键词: Aquifers
; Bacteria
; Batch reactors
; Biodegradation
; Denitrification
; Nitrates
; Organic carbon
; Ozone
; Ozone water treatment
; Ozonization
; Potable water
; Recharging (underground waters)
; Assimilable organic carbon
; Bromate
; Column experiments
; Denitrifying bacteria
; Effective removals
; Electron acceptor
; Managed aquifer recharges
; Microbial activities
; Nitrogen removal
; bromate
; drinking water
; nitrate
; organic carbon
; bromate
; ground water
; nitric acid derivative
; ozone
; anion
; anoxic conditions
; aquifer
; bacterium
; biodegradation
; bioreactor
; denitrification
; drinking water
; electron
; laboratory method
; microbial activity
; nitrate
; organic carbon
; ozonation
; pollutant removal
; recharge
; simulation
; total organic carbon
; water treatment
; aquifer
; Article
; biodegradation
; controlled study
; denitrifying bacterium
; electron
; managed aquifer recharge
; microbial activity
; nitrate reducer
; ozonation
; priority journal
; retention time
; simulation
; water treatment
; analysis
; bioremediation
; chemistry
; procedures
; water management
; water pollutant
; Biodegradation, Environmental
; Bromates
; Drinking Water
; Groundwater
; Nitrates
; Ozone
; Water Pollutants, Chemical
; Water Purification
英文摘要: The removal of bromate (BrO3 −) as a by-product of ozonation in subsequent managed aquifer recharge (MAR) systems, specifically in anoxic nitrate (NO3 −)-reducing zones, has so far gained little attention. In this study, batch reactors and columns were used to explore the influence of NO3 − and increased assimilable organic carbon (AOC) due to ozonation pre-treatment on BrO3 − removal in MAR systems. 8 m column experiments were carried out for 10 months to investigate BrO3 − behavior in anoxic NO3 −-reducing zones of MAR systems. Anoxic batch experiments showed that an increase of AOC promoted microbial activity and corresponding BrO3 − removal. A drastic increase of BrO3 − biodegradation was observed in the sudden absence of NO3 − in both batch reactors and columns, indicating that BrO3 − and NO3 − competed for biodegradation by denitrifying bacteria and NO3 − was preferred as an electron acceptor under the simultaneous presence of NO3 − and BrO3 −. However, within 75 days’ absence of NO3 − in the anoxic column, BrO3 − removal gradually decreased, indicating that the presence of NO3 − is a precondition for denitrifying bacteria to reduce BrO3 − in NO3 −-reducing anoxic zones. In the 8 m anoxic column set-up (retention time 6 days), the BrO3 − removal achieved levels as low as 1.3 μg/L, starting at 60 μg/L (98% removal). Taken together, BrO3 − removal is likely to occur in vicinity of NO3 −-reducing anoxic zones, so MAR systems following ozonation are potentially effective to remove BrO3 −. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113043
Appears in Collections: 气候减缓与适应
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作者单位: Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, PO Box 5048, Delft, 2600 GA, Netherlands; School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, 243000, China; School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China; Dunea, PO 756, Zoetermeer, 2700 AT, Netherlands; Strategic Centre, Waternet, Korte Ouderkerkerdijk 7, Amsterdam, 1096 AC, Netherlands
Recommended Citation:
Wang F.,van Halem D.,Ding L.,et al. Effective removal of bromate in nitrate-reducing anoxic zones during managed aquifer recharge for drinking water treatment: Laboratory-scale simulations[J]. Water Research,2018-01-01,130