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Characterization of faecal sludge during dry and rainy seasons in Ouagadougou, Burkina Faso

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posted on 2018-02-12, 15:10 authored by Magalie Bassan, Tetouehaki Tchonda, L. Yiougo, H. Zoellig, I. Mahamane, M. Mbeguere, Linda Strande
Faecal sludge (FS) management is a challenging problem in low-income countries where large parts of the urban population rely on onsite sanitation systems. The design of treatment plants relies on accurate knowledge of FS characteristics, but this information is lacking. The goal of this study, conducted between December 2010 and September 2011, was to determine physical and chemical characteristics of raw FS from collection and transport trucks in 5 discharge sites in Ouagadougou. Over 100 samples directly collected during truck discharge were analysed. Analyses included suspended solids, volatile suspended solids, total solids, total volatile solids, sludge volume index, chemical oxygen demand, biological oxygen demand, and heavy metals. The FS characteristics were highly variable, but had similar characteristics for FS collected during the dry and rainy seasons and at different discharge sites. The type of onsite system had an influence on FS characteristics.



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BASSAN, M. ... et al, 2013. Characterization of faecal sludge during dry and rainy seasons in Ouagadougou, Burkina Faso. IN: Shaw, R.J. (ed). Delivering water, sanitation and hygiene services in an uncertain environment: Proceedings of the 36th WEDC International Conference, Nakuru, Kenya, 1-5 July 2013, 6pp.


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