Napa’s Next Phase: Anaerobic Digestion Joins a Mature Composting System
The City of Napa is adding a high-solids anaerobic digester to its existing composting facility, creating one of the more technically integrated organics management systems in the United States. At the center of the project is Zero Waste Energy’s SMARTFERM plug flow technology, designed to process high-solids organic waste streams and convert them into renewable natural gas (RNG) for use in Napa’s collection fleet. The facility is operated by Napa Recycling, and owned by the City of Napa.