DOI: 10.1016/j.watres.2017.10.034
Scopus记录号: 2-s2.0-85032680857
论文题名: Direct potable reuse microbial risk assessment methodology: Sensitivity analysis and application to State log credit allocations
作者: Soller J.A. ; Eftim S.E. ; Nappier S.P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 128 起始页码: 286
结束页码: 292
语种: 英语
英文关键词: Advanced water treatment
; Direct potable reuse
; Log credit allocations
; Quantitative microbial risk assessment
; Reclaimed water
; Recycled water
Scopus关键词: Health risks
; Pathogens
; Potable water
; Risk perception
; Sensitivity analysis
; Viruses
; Wastewater reclamation
; Wastewater treatment
; Water conservation
; Water treatment
; Credit allocations
; Potable reuse
; Quantitative microbial risk assessment
; Re-claimed water
; Recycled water
; Risk assessment
; benchmarking
; infectivity
; microorganism
; pathogen
; public health
; quantitative analysis
; recycling
; risk assessment
; sensitivity analysis
; virus
; wastewater
; water treatment
; Article
; benchmarking
; Campylobacter
; Cryptosporidium
; Giardia
; methodology
; nonhuman
; Norovirus
; priority journal
; risk assessment
; Salmonella
; sensitivity analysis
; United States
; waste water management
; waste water recycling
; water treatment
; evaluation study
; human
; microbiology
; procedures
; sewage
; standards
; uncertainty
; virus
; waste water
; water management
; United States
; Norovirus
; Benchmarking
; Humans
; Norovirus
; Risk Assessment
; Sewage
; Uncertainty
; Viruses
; Waste Water
; Water Purification
英文摘要: Understanding pathogen risks is a critically important consideration in the design of water treatment, particularly for potable reuse projects. As an extension to our published microbial risk assessment methodology to estimate infection risks associated with Direct Potable Reuse (DPR) treatment train unit process combinations, herein, we (1) provide an updated compilation of pathogen density data in raw wastewater and dose-response models; (2) conduct a series of sensitivity analyses to consider potential risk implications using updated data; (3) evaluate the risks associated with log credit allocations in the United States; and (4) identify reference pathogen reductions needed to consistently meet currently applied benchmark risk levels. Sensitivity analyses illustrated changes in cumulative annual risks estimates, the significance of which depends on the pathogen group driving the risk for a given treatment train. For example, updates to norovirus (NoV) raw wastewater values and use of a NoV dose-response approach, capturing the full range of uncertainty, increased risks associated with one of the treatment trains evaluated, but not the other. Additionally, compared to traditional log-credit allocation approaches, our results indicate that the risk methodology provides more nuanced information about how consistently public health benchmarks are achieved. Our results indicate that viruses need to be reduced by 14 logs or more to consistently achieve currently applied benchmark levels of protection associated with DPR. The refined methodology, updated model inputs, and log credit allocation comparisons will be useful to regulators considering DPR projects and design engineers as they consider which unit treatment processes should be employed for particular projects. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113150
Appears in Collections: 气候减缓与适应
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作者单位: Soller Environmental, LLC, 3022 King St, Berkeley, CA 94703, United States; ICF, LLC, 9300 Lee Highway, Fairfax, VA 22031, United States; U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology, 1200 Pennsylvania Avenue, Washington, DC, NW 20460, United States
Recommended Citation:
Soller J.A.,Eftim S.E.,Nappier S.P.. Direct potable reuse microbial risk assessment methodology: Sensitivity analysis and application to State log credit allocations[J]. Water Research,2018-01-01,128