Waste & Recycling
Summary
Anaergia Inc. is supplying equipment to Monterey One Water, the wastewater utility of northern Monterey County, California, to make renewable energy from food waste and wastewater.
The project will significantly expand anaerobic digestion capacity at Monterey One Water’s Regional Treatment Plant (RTP) in Marina, California, and provide organic waste receiving and pre-processing equipment. This will allow the utility to receive and co-digest food waste in existing digesters currently used to process wastewater biosolids. When anaerobically digested, the waste produces renewable biogas, which is then used to generate electricity and heat at the Monterey One plant.
The project will return a mothballed anaerobic digester to service and provide digestion tank mixing technology to process food waste with biosolids without impacting critical wastewater operations. The new technology will simultaneously improve performance and save energy. Along with the ability to co-digest food waste with biosolids, Monterey One will benefit from a significant expansion of digester capacity to provide operational flexibility.
The project will increase biogas production from the plant’s four digesters by more than 150%, which will be used to make up to 1.6 MW of renewable electricity via on-site combined heat and power (CHP) engines. The increased energy production will provide more than 100% of the plant’s power needs, significantly reducing operating costs, supporting revenue generation, and increasing resiliency and reliability.
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