Biogas Production from Codigestion of Sanitary and Kitchen Solid Waste

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(Waste Generated From Condominium House)

Addis Ababa is one of the fastest growing cities where high urbanization becomes a challenge.

Consequently housing shortage is a big problem of the city.

The municipality has launched a huge Condominium Housing Programme in response to the housing problems.

However, sanitary wastewater and solid waste management’s are the critical problems to those houses.

Thus, sanitary wastewater and kitchen organic solid wastes generated from condominium residences were collected and evaluated for its biogas production and fertilizer potential in order to solve the foreseen waste management problems.

The physicochemical characteristics of the collected wastes were determined.

A laboratory scale batch anaerobic co-digestion of both wastes with different mix ratio of 100% SWW: 0%KSW , 75%SWW: 25%KSW, 50%SSW: 50%KSW, 25%SWW: 75%KSW and 0%SWW: 100%KSW were carried out at ambient temperature for 30 days.

Experimental results shows that the different metal ions and heavy metals expected in condominium house sanitary wastewater are within tolerable limits for anaerobic microorganisms.

The highest total biogas yields were obtained from 25%SWW:75%KSW which is 65.6liter.

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