Santa Rosa Featured in Press-Democrat for New High-Strength Organics Receiving Station

CodigestionThe City of Santa Rosa’s new high-strength receiving station received some rave reviews from their local newspaper, the Press-Democrat. Finally, some positive coverage for California sewer agencies!

The story highlights the new receiving station for grease and liquid food waste at Santa Rosa’s Laguna Wastewater Treatment Plant. The high-strength organic waste was being hauled from local breweries and food production facilities all the way to East Bay MUD in Oakland. The local Santa Rosa receiving station will save local companies hauling costs and allow the agency to turn the waste into biogas inside their digesters. The biogas is then moved to an engine to generate electricity via their on-site combined heat and power system.

“Projects like this help us keep rate increases as low as possible,” said Mike Prinz, Director of Subregional Operations for Santa Rosa Water and a CWEA member.

“It’s already achieving all of the project goals that we set out for it,” Adam Ross, PE told the newspaper.

Adam is a CWEA member and Senior Project Engineer for Brown and Caldwell, the project engineer for Santa Rosa’s new waste receiving facility.

The CWEA Redwood Empire Section hosted a tour and dinner meeting about the facility in May 2016. The receiving station will handle about 40,000 gallons per day and has four 12,000 gallon storage tanks with mixing and transfer capabilities, according to Adam.

“Grease is a high energy problem if it’s coming into the front door of the treatment plant, but it’s a high-benefit resource if it comes in via this side door,” Adam said during his dinner meeting presentation.

Adam also pointed to regulatory drivers for locating grease receiving stations at treatment plants: California regulations require the state to receive 33% of its power from renewable sources by 2020 and 50% by 2030.

Moreover, the State is requiring 75% of municipal solid waste get diverted away from landfills and one of the top priorities is to get food waste out of landfills and sent to composting facilities or pumped into digesters.

Read past co-digestions articles in the E-Bulletin…

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Alec Mackie

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