The Board of Directors approved a resolution on December 9, 2010 awarding a contract to Robert F. Enz Construction, Inc. in the amount of $251,700 for the Grease Receiving Facility Project. This project is slated for completion in 2011.
Waste grease can be accepted from restaurant grease traps and fed directly into digesters to increase digester gas production. It is readily and almost completely biologically converted to digester gas. The gas production can be increased significantly if there is sufficient excess digestion capacity and available grease. CAWD’s primary digester is lightly loaded with wastewater bisolids and has the capacity for a large amount of grease digestion. The increase in digester gas production from about 1,500 gpd of grease would be sufficient to fully fuel the microturbines and provide sufficient digester gas to fuel the sludge heater.