Anaerobic digestion is the natural process in which microorganisms break down organic matter in the absence of air (an anaerobic environment). Anaerobic digestion creates usable products such as biogas and digested material. 1

An anaerobic digester is simply a vessel or structure that allows the anaerobic digestion to take place in a controlled environment. SROM’s VS Digester uses the most advanced anaerobic digester system available. CH Four Biogas designs and engineers a custom mesophilic digester for each project. This custom system collects methane biogas under a membrane roof. The biogas is then cleaned and shipped for injection into the natural gas pipeline.

According to UC Davis Professor Frank Mitloehner, California’s dairy industry has substantially decreased the release of methane due to the capture and upcycling of methane gas and other projects that reduce the release of methane. 2 SROM’s system captures dairy methane once destined for the atmosphere and reuses it for vehicle fuel, heating, and electricity.

Yes. Research indicates that there is a growing demand for Biogas in applications, such as cooking gas, electricity, vehicle fuel, and heat.

Using biogas decreases the need to use fossil-based fuels.

1 – United States Environmental Protection Agency (EPA), “What is anaerobic digestion?”, https://www.epa.gov/anaerobic-digestion/frequent-questions-about-anaerobic-digestion#effectCC? 2 – University of California, Davis, “Methane, Cows, and Climate Change: California Dairy's Path to Climate Neutrality”, published by the Clear Center on September 2, 2020. https://clear.ucdavis.edu/news/methane-cows-and-climate-change-california-dairys-path-climate-neutrality

Lower cost bedding generation from their anaerobically digested manure Low nutrient water for use as flush water in their barns Clean water for land irrigation Odor reduction