ASSESSMENT OF LIFE CYCLE CO2 ON SEWAGE SLUDGE TREATMENT SYSTEM

초록

Life cycle assessment (LCA) on total sewage sludge treatment system including thickening, anaerobic digestion, dewatering, and incineration/melting was performed to estimate a global warming impact as carbon dioxide(CO2)emission. As representative processes for estimating, the most typical and widely used processes were selected. Generally, the life cycle of actual treatment facilities is consisted of three stages, construction, operation and dismantlement. In this study, the amount of CO2 produced from the life steps of currently used unit sludge treatment processes, was calculated by inventory analysis of input materials.