Breaking Down the Co-digestion Question: Lessons Learned at Encina
The schedule and timing of individual presentations within a session is subject to change based on the actual length of each presentation. Contact hours are awarded for attendance at the session and will be given for the actual length of the session.
Vice President Bachtel Wastewater Engineers Moreno Valley
Co-digestion can help utilities achieve energy independence and bring in new revenue—while also diverting organics from landfills. To succeed, they must consider the regulatory, technical, and business challenges they may face. A recent study conducted by CASA and others has emphasized that the co-digestion of food wastes requires a case-by case evaluation for feasibility. By examining the Encina Wastewater Authority’s experience operating their Alternative Fuels Receiving Facility since 2015, this session will identify important lessons learned for utilities considering co-digestion.
Identify key risks associated with operating a co-digestion system--particularly when other projects at the facility impact redundancy--and evaluate strategies to mitigate the risks that have succeeded elsewhere.
Understand digester health metrics (including the volatile acids to alkalinity ratio, methane production, and pH) and how a co-digestion program can impact them.
Evaluate the benefits of increased digester gas production and tipping fees revenue against the operating challenges of a co-digestion program.