World Waternet transfers all activities around biodigester to SafiSana in Ghana


World Waternet transfers all activities around biodigester to SafiSana in Ghana

After an involvement of over 2 years, World Waternet has recently terminated its activities for the biodigester in Ashaiman. The employees of SafiSana in Ghana will operate and maintain the biodigester autonomously. 


The plant is up and running since October 2016. Organic waste from markets, abattoirs and septic tanks is mixed in the right volumes to produce the maximum volume of biogas. Electricity is produced out of the biogas and sold to the national electricity grid. The sludge is deposited at drying beds for a week or two, after which it is mixed with market waste and sawdust. Covered by plastic, the temperature rises to over 70 degrees after which it is sold as organic fertilizer. The revenue streams of the organic fertilizer and the electricity are expected to cover the operational costs in the months to come.


During the design phase, World Waternet delivered input on the setup of the plant, the digester and the layout of the compound. Soon after that, the technicians of Safi Sana were trained in the operation and maintenance of the plant. Also World Waternet designed and delivered equipment the laboratory. The lab-staff was trained on the use of the equipment and the necessary analyses for the plant to run effectively. For both the lab and the operations of the plant, we helped to write standard operating procedures. Finally, World Waternet spent time to optimize the operations of the plant.


The subsidy of the Sustainable Water Fund ended in October this year. The direct activities of World Waternet in this project have therefore come to an end. Our colleagues of Safi Sana are now able to operate and maintain the plant themselves. Also the Laboratory can function autonomously. World Waternet stays in contact with our colleagues and we are always available for further questions. In the meanwhile we continue to look for opportunities to replicate this innovative and sustainable waste-to-energy model.