Tunnel Composting to Turn General Waste into Solid Recovered Fuel

Abstract

The Biomass Recycling Center Mitoyo in Mitoyo City, Kagawa Prefecture, is the first in Japan to process waste by tunnel composting. It uses microorganisms to ferment and dry burnable waste produced by general households and separates and recycles paper and plastics as a solid recovered fuel material. This material is made into a product at a solid recovered fuel material plant and finally, sold as a coal alternative.

　This report first introduces the history, processing flow, and characteristics of tunnel composting. It then summarizes the decarbonization effect of turning general waste into solid recovered fuel and lastly, presents a vision for the future.