Abstract
In this study, we categorized nine designated areas for regional waste management in Gunma prefecture into two types: area applied to boiler-turbin generator in a waste incineration plant (WIP), and area applied to dry digestion in a WIP. We selected Ohta-Tatebayashi as the former area, and did Agatsuma as the latter area. In Ohta-Tatebayashi, dewatered sludge is dried by useable portion of the steam heat, and then dried sludge is combusted in WIPs under the collaborative plan. In Agatsuma, several sludges, food waste and waste paper are digested in a WIP or a sewerage treatment plant under the collaborative plan. The results showed that GHG emissions were reduced by 13% in Ohta-Tatebayashi and 15% in Agatsuma by introducing the collaborative plan in comparison with the individual non-collaborative plan for each.
