ESTIMATING ENERGY AND MATERIAL FLOW OF SEWAGE SLUDGE FUELIZATION SYSTEM UTILIZATING CEMENT PRODUCTION INFRASTRUCTURE

Abstract

 In this research, we estimated the potential of demand and supply in sewage sludge fuelization system utilizing a cement production infrastructure in Hyogo coastal region between 2010 and 2040. We also estimated GHG emissions through the introduction of this system. From the analysis, we reached the following conclusions; 1) In all scenarios for economic growth of cement industry (high, low and medium growth scenario) based on the prediction in the previous research, the cement production infrastructure could accept carbonized sewage sludge from 5 sewage sludge treatment facilities at a co-firing ratio of 10% (carbonized sewage sludge/coal). 2) In high economic growth scenario, the co-firing ratio of 10% could make cement production infrastructure accept carbonized sewage sludge produced at 6 sewage sludge treatment facilities. 3) The sewage sludge carbonization system in collaboration with the cement production infrastructure could reduce GHG emissions by up to 125.4% between 2015 and 2040.