One particular circular economy solution is anaerobic digestion. Municipal wastewater facilities process large amounts of water, making them ideal candidates for the technology. Adding food waste can produce significant amounts of additional natural gas. At some facilities, for instance, fats, oils and greases are trucked to the plants from local food service establishments. The biogas produced can be used to supply onsite boilers, generate electricity, or sold to the pipelines. Excess energy can be fed back into the local electrical grid providing a source of revenue for the municipality. More>>
