DOI: | 10.1016/j.watres.2018.10.010
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Scopus记录号: | 2-s2.0-85055742963
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论文题名: | N-nitrosomorpholine in potable reuse |
作者: | Glover C.M.; Verdugo E.M.; Trenholm R.A.; Dickenson E.R.V.
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刊名: | Water Research
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ISSN: | 431354
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出版年: | 2019
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卷: | 148 | 起始页码: | 306
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结束页码: | 313
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语种: | 英语
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英文关键词: | Advanced treatment
; Biological activated carbon
; Granular activated carbon
; N-nitrosomorpholine
; Ozonation
; Potable reuse
; Reverse osmosis
; UV photolysis
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Scopus关键词: | Activated carbon
; Biofilters
; Biofiltration
; Disinfection
; Effluents
; Granular materials
; Oxidation
; Ozone
; Ozone water treatment
; Ozonization
; Photolysis
; Pilot plants
; Reverse osmosis
; Surface waters
; Water pollution control
; Advanced treatment
; Biological activated carbon
; Granular activated carbons
; Potable reuse
; UV photolysis
; Activated carbon treatment
; activated carbon
; granular activated carbon
; hydrogen peroxide
; nitrosomorpholine
; storm water
; surface water
; unclassified drug
; activated carbon
; byproduct
; chemical compound
; comparative study
; experimental study
; guideline
; health impact
; oxidation
; ozonation
; pollutant removal
; recycling
; reverse osmosis
; wastewater treatment
; Article
; biofiltration
; chlorination
; controlled study
; disinfection
; effluent
; oxidation
; ozonation
; photochemical degradation
; photochemistry
; photodegradation
; priority journal
; radiation dose
; reverse osmosis
; ultraviolet radiation
; United States
; waste component removal
; waste water
; waste water management
; waste water recycling
; waste water treatment plant
; water sampling
; United States
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英文摘要: | As potable reuse guidelines and regulations continue to develop, the presence of N-nitrosamines is a primary concern because of their associated health concerns. In this study, bench-, pilot-, and full-scale tests were conducted to focus on the occurrence and treatment of N-nitrosomorpholine (NMOR) in United States (U.S.) potable reuse systems. Out of twelve U.S. wastewater effluents collected, ambient NMOR was detected in eleven (average = 20 ± 18 ng/L); in contrast, only two of the thirteen surface water and stormwater samples had NMOR. Across all of these samples maximum formation potential by chloramination produced an average increase of 3.6 ± 1.8 ng/L. This result underscores the need to understand the sources of NMOR as it is not likely a disinfection byproduct and it is not known to be commercially produced within the U.S. At the pilot-scale, three potable reuse systems were evaluated for ambient NMOR with oxidation (i.e., chlorination and ozonation), biofiltration, and granular activated carbon (GAC). Both pre-oxidation and biofiltration were ineffective at mitigating NMOR during long-term pilot plant operation (at least eight-months). GAC adsorbers were the only pilot-scale treatment to remove NMOR; however, complete breakthrough occurred rapidly from <2000 to 10,000 bed volumes. For comparison, a full-scale reverse osmosis (RO) potable reuse system was monitored for a year and confirmed that RO effectively removes NMOR. Systematic bench-scale UV-advanced oxidation experiments were undertaken to assess the mitigation potential for NMOR. At a fluence dose of 325 ± 10 mJ/cm2 UV alone degraded 90% of the NMOR present. The addition of 5 mg/L hydrogen peroxide did not significantly decrease the UV dose required for one-log removal. These data illustrate that efficient NMOR removal from potable reuse systems is limited to RO or UV treatment. © 2018 The Authors |
Citation statistics: |
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资源类型: | 期刊论文
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标识符: | http://119.78.100.158/handle/2HF3EXSE/122205
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Appears in Collections: | 气候变化事实与影响
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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
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Recommended Citation: |
Glover C.M.,Verdugo E.M.,Trenholm R.A.,et al. N-nitrosomorpholine in potable reuse[J]. Water Research,2019-01-01,148
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