globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2018.10.010
Scopus记录号: 2-s2.0-85055742963
论文题名:
N-nitrosomorpholine in potable reuse
作者: Glover C.M.; Verdugo E.M.; Trenholm R.A.; Dickenson E.R.V.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 148
起始页码: 306
结束页码: 313
语种: 英语
英文关键词: Advanced treatment ; Biological activated carbon ; Granular activated carbon ; N-nitrosomorpholine ; Ozonation ; Potable reuse ; Reverse osmosis ; UV photolysis
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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122205
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

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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