ごみ焼却施設の熱源を活用した汚泥の乾燥・炭化システムの設計と炭素隔離効果の評価

抄録

To achieve greenhouse gas (GHG) reduction in a night soil treatment plant (NSTP), this study proposes a sludge carbonization system to produce biochar and generate negative CO2 emission by sequestration of biogenic carbon. To dry dewatered sludge, it uses the heat source from a waste incineration plant (WIP). The purpose of this study was to build a sludge carbonization system and to evaluate carbon sequestration effect of biochar. First, I compiled population data to decide the treatment population. Next, I constructed a model to calculate GHG emission of the system targeted for NSTP and WIP. The result shows that a sludge carbonization system not only reduces GHG emissions from solo incineration, but also achieves net zero limited a dewatered sludge process.