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Title: Quantitative microbial risk assessment of wastewater and faecal sludge reuse in Ghana
Authors: Seidu, Razak
Drechsel, Pay
Amoah, Philip
Lofman, Owe
Heistad, Arve
Fodge, Madeleine
Jenssen, Petter
Stenstrom, Thor-Axel
Issue Date: 2008
Publisher: © WEDC, Loughborough University
Citation: 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.
Abstract: The 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.
Description: This is a conference paper.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/30637
Appears in Collections:WEDC 33rd International Conference

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