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Food Waste Co-Digestion in California – The Role of WRRFs and Investment Needs to Maximize Co-Digestion in Support of SB 1383 (Free)

September 9, 2020
Contact Hours:
Description:

In 2016, California adopted Senate Bill 1383 (SB 1383) to reduce short-lived climate pollutants like methane released from decomposing organic material in landfills. SB 1383 establishes specific targets to achieve: a 50 percent reduction in the level of statewide disposal of organic waste at landfills by 2020, and a 75 percent reduction by 2025. Municipal wastewater treatment plants (WWTPs) offer one avenue for the targeted organics diversion by accepting food waste diverted from landfills and co-digesting it with municipal solids. Through co-digestion of diverted food waste in anaerobic digesters, municipal WWTPs can help achieve SB 1383 goals while producing and making beneficial use of biogas, which is a renewable energy source. P - The California State Water Resources Control Board received a multi-purpose grant from the United States Environmental Protection Agency (EPA) to analyze co-digestion capacity at municipal WWTPs in California and selected Carollo Engineers, Inc. (Carollo) to complete the study. This webinar will summarize the major results of this comprehensive study of co-digestion capacity at WWTPs throughout California. While results are specific to this state, the evaluation methodologies, costs, lessons learned, regulatory considerations, and potential greenhouse gas emissions will be valuable to any facility, state, or regulatory body considering implementation of organics waste diversion through co-digestion. Learning Objectives - After participating in this session, attendees will be able to: Identify the key processes that must be in place to co-digest food waste slurry. Understand the differences in food waste availability and co-digestion capacity in various regions of the state. Understand which processes require investments and the relative scale of those investments. Understand the relative differences in potential costs/benefits for various biogas utilization alternatives. Identify barriers, incentives, and certain regulations that must be considered during feasibility analyses or planning studies. No contact hours are awarded for this webinar.

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