Wastewater Management in Third World Cities: Case Study of Cotonou, Benin

Abstract

Poor wastewater management coupled with lack of sanitation facilities has aggravated the sanitation challenges in developing countries. This study was aimed at providing information on the current state of sanitation in Cotonou City through surveys. The most common sanitation facilities in the city were septic tanks, latrines and soakaway pits. Mechanical desulging was mainly used (94%) for desludging latrines and septic tanks with a frequency of less than once a year for 73% of the houses; manual desludging was most common for soakaway pits. 84% of sullage generated is disposed without treatment. The only existing stabilization pond plant, managed by a private company SIBEAU, is overloaded; the effluent is poor (up to 2250mg/l BOD5) and does not meet any quality standards. 96% of survey respondents recognise that the sanitation situation in the city is not good; it has to be improved by providing an appropriate and sustainable sanitation management system.

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Hounkpe, S. , Adjovi, E. , Crapper, M. and Awuah, E. (2014) Wastewater Management in Third World Cities: Case Study of Cotonou, Benin. Journal of Environmental Protection, 5, 387-399. doi: 10.4236/jep.2014.55042.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Organization, W.H. (2010) Water, Sanitation and Hygiene Links to Health Facts and Figures-Updated November 2004. WHO, Geneva.
[2] Montgomery, M.A. and M. Elimelech (2007) Water and Sanitation in Developing Countries: Including Health in the Equation. Environmental Science & Technology, 41, 17-24.
http://dx.doi.org/10.1021/es072435t
[3] OMS (2010) Evaluation annuelle mondiale de L’onu-eau sur l’assainissement et l’eau potable. Organisation Mondiale de la sante (OMS).
[4] WHO and UNICEF (2012) Progress on Sanitation and Drinking-Water—2012 Update. World Health Organization, Geneva.
[5] UNION, I.P. (2008) The Millennium Development Goals Report 2008.
[6] KOANDA, H. (2006) Vers un assainissement urbain durable en Afrique subsaharienne: Approche innovante de planification de la gestion des boues de vidange in Faculte Environnement Naturel, Architectural et Construit 2006, Ecole Polytechnique Federale de Lausanne.
[7] Morella, E., Foster, V. and Banerjee, S.G. (2008) Climbing the Ladder: The State of Sanitation in Sub-Saharan Africa. Background Paper, 13.
[8] Mbeguere, M., Gning, J., Dodane, P. and Kone, D. (2010) Socio-Economic Profile and Profitability of Faecal Sludge Emptying Companies. Resources, Conservation and Recycling, 54, 1288-1295.
http://dx.doi.org/10.1016/j.resconrec.2010.04.008
[9] Cotonou, L.M.D. (2011) La ville de Cotonou, La Mairie de Cotonou. www.mairiedecotonou.com
[10] ASCECNA (2008) Donnees pluviometriques de Cotonou: Station de l’Aeroport de Cotonou 2008, ASECNA.
[11] INSAE-BENIN (2002) Recensement General de l’Habitat et la Population 2002, INSAE-BENIN.
[12] Collignon, B. (2002) Les entreprises de vidange mecanique des systemes d’assainissement autonome dans les grandes villes africaines. Chateauneuf de Gadagne, Hydroconseil.
[13] SEIDL, M., J.M. MOUCHEL, U. EIER, and C. Aquadev (2003) Valorisation des eaux usees par lagunage dans les pays en voie de developpement. Centre dEenseignement et de recherche Eau Ville Environnement, centre conjoint de lEENGREF, de lEENPC et de lEUPVM.
[14] Bolomey, S., D. Kone, and M. Strauss (2003) Amelioration de la gestion des boues de vidange par le renforcement du secteur prive local: Etudes et Outils Cas de la Commune VI du District de Bamako. 2003, Eawag/Sandec, 48 p.
http://www.sandec.ch/FaecalSludge/Documents/Renforcement_secteur_prive.pdf

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