Singapore Aims to Co-Digest Food Waste with Water Sludge to Produce Biogas
June 24, 2015http://www.waste-management-world.com/articles/2015/06/singapore-co-digests-40-tph-food-waste-with-sludge-to-yield-more-biogas.html
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Singapore's Public Utilities Board, the national water agency, has started the nation's first project to produce biogas through co-digesting used water sludge and food waste.
Water sludge from the Ulu Pandan Water Reclamation Plant (WRP) will be mixed with food waste collected from the Clementi district and treated in a co-digestion demonstration facility. Due to the "higher calorific value in food waste", this new combined treatment has the potential to produce more biogas.
The plant can treat up to 40 tons of combined food waste and used water sludge. It will adopt the OmnivoreTM process of the energy company Anaergia, which uses anaerobic digestion to produce biogas. The plant is set to be completed by September 2015.
If successful, the process could potentially be implemented at the future Tuas Water Reclamation Plant and the National Environment Agency's Integrated Waste Management Facility.
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