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Quantitative microbial risk assessment of wastewater and faecal sludge reuse in Ghana
conference contribution
posted on 2018-02-12, 15:10 authored by Razak Seidu, Pay Drechsel, Philip Amoah, Owe Lofman, Arve Heistad, Madeleine Fodge, Petter Jenssen, Thor-Axel StenstromThe probabilistic health risks of rotavirus and Ascaris infections associated with different scenarios of
diluted wastewater and faecal sludge agricultural reuse in Ghana were estimated based on the Quantitative
Microbial Risk Assessment (QMRA) approach. The annual risks of rotavirus and Ascaris infections
associated with diluted wastewater reuse scenarios were 10-2 and 10-3 to 10-4 respectively compared with
the WHO tolerable health risk of 10-4 per person per year. The risk of Ascaris infection for the different
scenarios of faecal sludge reuse ranged from 10-4 to 10-2 while it was <10-14 to 10-1 for rotavirus infections
per single exposure. The treatment of faecal sludge significantly reduced the risk of rotavirus infections but
had less effect on the reduction of Ascaris infections. It is stressed that the estimated risks of infection need
to be validated against follow-up data obtained from epidemiological investigations coupled with studies
on different health risk barriers.
History
School
- Architecture, Building and Civil Engineering
Research Unit
- Water, Engineering and Development Centre (WEDC)
Published in
WEDC ConferenceCitation
SEIDU, R. ... et al, 2008. Quantitative microbial risk assessment of wastewater and faecal sludge reuse in Ghana. IN: Jones, H. (ed). Access to sanitation and safe water - Global partnerships and local actions: Proceedings of the 33rd WEDC International Conference, Accra, Ghana, 7-11 April 2008, pp. 121-127.Publisher
© WEDC, Loughborough UniversityVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2008Notes
This is a conference paper.Other identifier
WEDC_ID:13404Language
- en
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