DOI: 10.1016/j.watres.2018.07.018
Scopus记录号: 2-s2.0-85050649787
论文题名: Removal of perfluoroalkyl and polyfluoroalkyl substances in potable reuse systems
作者: Glover C.M. ; Quiñones O. ; Dickenson E.R.V.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 454
结束页码: 461
语种: 英语
英文关键词: Advanced treatment trains
; Perfluoroalkyl acid precursors
; Perfluoroalkyl and polyfluoroalkyl substances (PFASs)
; Potable reuse
; Total oxidizable precursor assay
Scopus关键词: Activated carbon
; Chains
; Effluent treatment
; Effluents
; Microfiltration
; Potable water
; Advanced oxidation
; Advanced treatment
; Aquatic environments
; Biological activated carbon filtration
; Granular activated carbons
; Perfluoroalkyl acids
; Polyfluoroalkyl substances
; Potable reuse
; Activated carbon treatment
; activated carbon
; alkyl group
; drinking water
; hydroxyl radical
; ozone
; perfluoroalkyl and polyfluoroalkyl substance
; unclassified drug
; assay
; drinking water
; effluent
; fluorocarbon
; hydroxyl radical
; oxidation
; persistent organic pollutant
; pollutant removal
; recycling
; reverse osmosis
; wastewater treatment
; wastewater treatment plant
; Article
; effluent
; filtration
; oxidation
; priority journal
; reverse osmosis
; ultraviolet radiation
; waste water recycling
英文摘要: Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are a group of persistent contaminants that have been identified throughout the aquatic environment. In this study, ten targeted perfluoroalkyl acids (PFAAs), three targeted PFAA precursors, and non-targeted PFAA precursors were monitored in four full- and pilot-scale potable reuse plants at each stage of advanced treatment. Non-targeted PFAA precursors were quantified by applying a total oxidizable precursor assay in which PFAA precursors are oxidized by hydroxyl radicals to targeted PFAAs. Two of the potable reuse systems had membrane-based treatments with reverse osmosis and UV-advanced oxidation (RO-UV/AOP) and two used ozone, biological activated carbon filtration and granular activated carbon adsorption (O3-BAC-GAC). The total targeted PFAAs in the four tertiary effluents, the influent sources for the potable reuse systems, ranged from 52 to 227 ng/L with non-targeted PFAA precursors accounting for 30–67% of total PFASs on a molar basis. The RO-UV/AOP treatment trains reduced PFAAs and PFAA precursors to below their method reporting limits through the barrier provided by RO. The O3-BAC-GAC based treatment trains reduced, but did not completely remove PFAAs or PFAA precursors and the PFASs present in the product water were primarily shorter-chain PFAAs, some of which lack human health guidance values for drinking water. The relative fraction of targeted shorter-chain PFAAs increased after each treatment step indicating that there was preferential removal of the PFAA precursors and longer-chain PFAAs. This study provides new insight on the concentrations and treatment of PFAA precursors through potable reuse treatment systems. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112519
Appears in Collections: 气候减缓与适应
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作者单位: Water Quality Research and Development Division, Southern Nevada Water Authority, P.O. Box 99954, Las Vegas, NV 89193-9954, United States
Recommended Citation:
Glover C.M.,Quiñones O.,Dickenson E.R.V.. Removal of perfluoroalkyl and polyfluoroalkyl substances in potable reuse systems[J]. Water Research,2018-01-01,144