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External seminar with Jim Smart and Syezlin Hasan

1μDALY upgrading of Water Treatment Plants Cost-Benefit Analysis.

01.03.2018 | Christel Bettina Ege-Johansen

Dato ons 07 mar
Tid 11:00 12:00
Sted K1.36, in the East Wing of Campus Roskilde, AU, Frederiksborgvej 399, 4000 Roskilde


 In the period from 1st of March to 22nd of March, Associate Professor Jim Smart and Researcher Syezlin Hasan from Australian River Institute and Griffith University, Brisbane, Australia, will visit ENVS (Line Block Hansen and Berit Hasler).  They are both environmental economists, and they visit ENVS to cooperate on research related to the BONUS GO4BALTIC project as well as the SGA on integrated and spatial modelling.

Wednesday 7th of March they will give a presentation to the Department of Environmental Science on  “1μDALY upgrading of Water Treatment Plants Cost-Benefit Analysis” in K1.36 from 11:00 to 12:00.

A safe and reliable drinking water supply for the general public is a critical step in achieving water, sanitation and health (WASH) objectives in water resource management. The health risks associated with drinking water are directly affected by the quality of the raw water input and the level of water treatment provided by water utilities. This presentation describes recently completed work on cost benefit analyses for upgrading water treatment plants (WTPs) in South East Queensland, Australia. The WTP upgrades involve installation of UV disinfection to reduce concentrations of Cryptosporidium and Campylobacter spp. pathogens in drinking water to below the health-based target of 1µDALY per person per year. The primary objective is to produce monetary valuations of the improvements in public health which result from these WTP upgrades, and then to compare the monetary benefits of these health improvements with the costs of constructing and operating the upgraded treatment systems. These comparisons are undertaken within a cost benefit framework. Improvements in public health for residents of South East Queensland are quantified as reductions in the population disease burdens associated with Cryptosporidium and Campylobacter spp. given source water pathogen concentrations under ‘standard’ and ‘event’ flow conditions. Variability in source water pathogen concentrations within and between years is addressed through stochastic simulation. Results from stochastic simulations suggest that upgrading of the larger WTPs in the region should deliver high public benefit to cost ratios. Stochastic simulations also suggest that upgrading the WTPs to include UV disinfection should reduce population disease burdens from Cryptosporidium and Campylobacter spp. to well below the 1μDALY health-based target

Hosts: Head of Section, Senior Scientist Berit Hasler bh@envs.au.dk 
Postdoc Line Block Hansen, SAMI (Environmental social science) lbc@envs.au.dk 

External guests interested in attending the presentation should email Christel Ege-Johansen, cej@envs.au.dk 



Institut for Miljøvidenskab, Medarbejdere, Offentligheden / Pressen