Abstract
Saga City was certified as a biomass industry city in 2014 (Heisei 26). The future vision it aims for is to establish a town where waste circulates while creating value as energy and resources. Saga City Sewage Purification Centre provides such services as: power generation from digestion gas, fertilizer production from sludge, discharge of treated water with adjusted nitrogen content, separation and recovery of carbon dioxide from fermented biogas. Saga City Waste Incineration Plant conducts such operations as: utilization of waste heat from incineration, power generation by steam turbine, fuel refining from waste cooking oil, separation and recovery of carbon dioxide from exhaust gas. By treating the waste discharged from each facility as a resource, we carry out what is called “Saga City Whole Resource Recycling”, which focuses on the promotion of a recycling society in which the economy and the environment are compatible in a non-wasteful, more natural manner.