Biogas production from the sludge of the municipal wastewater treatment plant of Adrar city (southwest of Algeria)

• Published in: Biomass & bioenergy Vol. 35; no. 7; pp. 2554 - 2560
• Main Authors: Kalloum, S., Bouabdessalem, H., Touzi, A., Iddou, A., Ouali, M.S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.07.2011; Elsevier
• Subjects: Algeria; Alternative fuels. Production and utilization; Applied sciences; Biogas; Crack opening displacement; Digestion; Energy; Escherichia coli; Exact sciences and technology; Fuels; Miscellaneous; Municipal wastewater treatment plant; Organic matter; Other wastewaters; Plants (organisms); Pollution; Sludge; Southwest; Wastewater treatment; Wastewaters; Water treatment and pollution; Algeria, Adrar; Algeria; Municipal wastewater treatment plant; Organic matter; Biogas; Digestion; Energy; Sludge; Municipal wastewater treatment; plant
• ISSN: 0961-9534; 1873-2909
• DOI: 10.1016/j.biombioe.2011.02.012

This study deals with the treatment and valorization of sludge issued from the municipal wastewater treatment plant of Adrar city (southwest of Algeria). The sludge considered was a complex mixture of substances, essentially organic matters with a rate of 54%. An acute biological activity of the crude substrate was noted (1.67 10 6 germs/1 ml). The diluted sludge with a content of 16 g/l of total solids (TS) was fermented in a digester of one litter capacity under anaerobic conditions during 33 days. The quantity of biogas produced was 280.31 Nml with a yield of 30 Nml of biogas/mg of COD removed. The COD, BOD and TS reduction yields were 88, 90 and 81% respectively, followed by a complete destruction of the pathogenic flora particularly Escherichia coli. This study presented an important energetic opportunity by producing 30,950 KWh. ► The valorization of the sludge in order to protect the environment. ► Production of high value added substances such as biogas. ► Production of very riche fertilizers. ► This work highlights the contribution to the sustainable development in the Saharan zones.