DOI: 10.1016/j.watres.2017.12.054
Scopus记录号: 2-s2.0-85040059290
论文题名: Risk-based cost-benefit analysis for evaluating microbial risk mitigation in a drinking water system
作者: Bergion V. ; Lindhe A. ; Sokolova E. ; Rosén L.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 111
结束页码: 123
语种: 英语
英文关键词: Cost-benefit analysis (CBA)
; Decision support
; Drinking water
; Quality adjusted life year (QALY)
; Quantitative microbial risk assessment (QMRA)
; Water quality modelling
Scopus关键词: Catchments
; Costs
; Decision support systems
; Health
; Health risks
; Potable water
; Quality control
; Reclamation
; Risk assessment
; Risk management
; Risk perception
; Wastewater treatment
; Water quality
; Water treatment
; Water treatment plants
; Waterworks
; Decision supports
; Municipal wastewater treatment plants
; On-site wastewater treatment systems
; Probabilistic Risk Assessment
; Quality adjusted life years
; Quantitative microbial risk assessment
; Quantitative microbial risk assessment (QMRA)
; Water quality modelling
; Cost benefit analysis
; drinking water
; drinking water
; cost-benefit analysis
; decision support system
; disinfection
; drinking water
; holistic approach
; infectious disease
; microbial activity
; mitigation
; quality of life
; risk assessment
; wastewater treatment
; wastewater treatment plant
; water quality
; World Health Organization
; Article
; catchment
; cost benefit analysis
; disinfection
; lake
; priority journal
; quality adjusted life year
; risk assessment
; Sweden
; ultraviolet radiation
; waste water management
; waste water treatment plant
; water supply
; cost benefit analysis
; decision support system
; economics
; human
; microbiology
; risk assessment
; sewage
; waste water
; water management
; Sweden
; Animalia
; Cost-Benefit Analysis
; Decision Support Techniques
; Disinfection
; Drinking Water
; Humans
; Risk Assessment
; Sweden
; Ultraviolet Rays
; Waste Disposal, Fluid
; Waste Water
; Water Purification
英文摘要: Waterborne outbreaks of gastrointestinal diseases can cause large costs to society. Risk management needs to be holistic and transparent in order to reduce these risks in an effective manner. Microbial risk mitigation measures in a drinking water system were investigated using a novel approach combining probabilistic risk assessment and cost-benefit analysis. Lake Vomb in Sweden was used to exemplify and illustrate the risk-based decision model. Four mitigation alternatives were compared, where the first three alternatives, A1-A3, represented connecting 25, 50 and 75%, respectively, of on-site wastewater treatment systems in the catchment to the municipal wastewater treatment plant. The fourth alternative, A4, represented installing a UV-disinfection unit in the drinking water treatment plant. Quantitative microbial risk assessment was used to estimate the positive health effects in terms of quality adjusted life years (QALYs), resulting from the four mitigation alternatives. The health benefits were monetised using a unit cost per QALY. For each mitigation alternative, the net present value of health and environmental benefits and investment, maintenance and running costs was calculated. The results showed that only A4 can reduce the risk (probability of infection) below the World Health Organization guidelines of 10−4 infections per person per year (looking at the 95th percentile). Furthermore, all alternatives resulted in a negative net present value. However, the net present value would be positive (looking at the 50th percentile using a 1% discount rate) if non-monetised benefits (e.g. increased property value divided evenly over the studied time horizon and reduced microbial risks posed to animals), estimated at 800–1200 SEK (€100–150) per connected on-site wastewater treatment system per year, were included. This risk-based decision model creates a robust and transparent decision support tool. It is flexible enough to be tailored and applied to local settings of drinking water systems. The model provides a clear and holistic structure for decisions related to microbial risk mitigation. To improve the decision model, we suggest to further develop the valuation and monetisation of health effects and to refine the propagation of uncertainties and variabilities between the included methods. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112975
Appears in Collections: 气候减缓与适应
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作者单位: Chalmers University of Technology, Department of Architecture and Civil Engineering, Gothenburg, SE-41296, Sweden
Recommended Citation:
Bergion V.,Lindhe A.,Sokolova E.,et al. Risk-based cost-benefit analysis for evaluating microbial risk mitigation in a drinking water system[J]. Water Research,2018-01-01,132