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Introducing co-composting to fecal sludge treatment plants in Benin and Burkina Faso: a logistical and financial assessment

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Title Introducing co-composting to fecal sludge treatment plants in Benin and Burkina Faso: a logistical and financial assessment
 
Creator Nikiema, Josiane
Tanoh-Nguessan, R.
Abiola, F.
Cofie, Olufunke O.
 
Subject resource recovery
resource management
reuse
faecal sludge
waste treatment
solid wastes
treatment plants
composting
logistics
economic analysis
waste management
waste collection
sewerage
recycling
waste disposal
sludge dewatering
anaerobic treatment
septic tanks
sanitation
technology
maintenance
public-private partnerships
investment
business models
cost recovery
production costs
operating costs
marketing
cost benefit analysis
land use
urban areas
households
 
Description Based on primary data from fecal sludge (FS) treatment plants in three West African urban regions (Ouagadougou in Burkina Faso, Greater Accra in Ghana, and Grand Nokoué in Benin), FS collection and treatment patterns were analyzed to identify possible scenarios for resource recovery (RR) through FS co-composting. FS collection was analyzed for up to 7 years, in part per day, month and season, as well as FS characteristics to understand peak flows, FS qualities and related variations to plan for appropriate RR technology and capacities.

Overall, the FS volumes collected by vacuum trucks were not significantly affected by the calendar days, months or seasons. Commonly assumed increases during rainy months were, for example, only recorded in Ouagadougou. FS composition appeared highly variable with a pronounced difference in total solids between FS collected from households versus institutional sources, likely indicating that institutions are served more frequently.

The analyzed treatment plants appear to be exploited beyond their capacity. RR for reuse can turn sludge disposal from a cost into a source of revenue with co-benefits for farmers and the environment, thereby reducing the pressure on tipping fees. The probability of the added co-compost production being financially viable on its own was estimated for all the study sites, indicating an earliest breakeven point after 5 to 8 years.
 
Date 2020-07-20
2020-07-20T15:02:18Z
2020-07-20T15:02:18Z
 
Type Report
 
Identifier Nikiema, Josiane; Tanoh-Nguessan, R.; Abiola, F.; Cofie, Olufunke O. 2020. Introducing co-composting to fecal sludge treatment plants in Benin and Burkina Faso: a logistical and financial assessment. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Research Program on Water, Land and Ecosystems (WLE). 50p. (Resource Recovery and Reuse Series 17) [doi: 10.5337/2020.206]
978-92-9090-901-9
2478-0510
2478-0529
https://hdl.handle.net/10568/108822
https://www.iwmi.cgiar.org/Publications/wle/rrr/resource_recovery_and_reuse-series_17.pdf
https://doi.org/10.5337/2020.206
H049802
 
Language en
 
Relation Resource Recovery and Reuse Series
 
Rights Copyrighted; all rights reserved
Open Access
 
Format 50p.
 
Publisher CGIAR Research Program on Water, Land and Ecosystems