New!!! EDEA Design Wins 2013 APWA Northern California Project of the Year

Fats, Oils, and Grease Receiving Station for Napa Sanitation District

The District's new FOG facility, designed by EDEA, represents an innovative, state-of-the-art technology that is only present in a few wastewater treatment plants. The treatment process allows unwanted and hazardous FOG to be converted to renewable energy.

The District's new FOG facility provides the District with a new source of sustainable energy. Bacteria eat FOG and produce methane gas, which is collected and burned to generate electricity used to power the District's wastewater treatment plant operations. By feeding FOG to bugs, the District could potentially meet 40% of its energy demand from alternative sources.

After labor, energy cost is the single largest operating expense at Napa Sanitation District's New FOG Facility the Soscol Water Reclamation Plant. The District will be able to cut its $750,000 annual energy bill by $100,000 with the new FOG facility -- This represents a 13% reduction in annual energy cost to the District.

MGSD Grease Recieving and Cogeneration Facility

EDEA designed the grease recieving cogeneration facilities for the Minden Gardnerville Sanitation District. The project recieved ARRP funding as an innovative and green project in Nevada. Grease is recieved from individual rease hauling trucks, screened and transferred to the 15,000 gallon grease recieving tank. From the grease recieving tank, grease is metered into the plant's anaerobic digesters where it produces methane gas. The gas, in turn, is conditioned to remove hydrogen sulfide and siloxane, and then utilized in an engine generator to produce electrical energy. The project easily pays for itself in grease tipping fees and reduced electrical costs.

Digester Gas Conditioning Skid

Grease Recieving Station

 Grease Strainers

Grease Hauler Unloading