LCA 기법을 활용한 생활폐기물 자동집하시설의 전과정 온실가스 배출 특성 분석 및 저감 방안 연구

초록

This study applied Life Cycle Assessment (LCA) to evaluate greenhouse gas (GHG) emissions of an automated waste collection system (AWCS) installed in a residential complex in Korea. The functional unit was defined as the treatment of 1 ton of municipal solid waste, and the analysis covered material production, construction, operation, maintenance, and end-of-life stages over a 40-year service life. Total life-cycle emissions were estimated at 1,237.38 kg CO2-eq per functional unit, with the operational stage accounting for the largest share. Electricity consumption, particularly from high- capacity blowers, was identified as the dominant emission source. Scenario analysis indicated that increasing the share of photovoltaic energy substantially reduces long-term emissions compared to grid electricity alone. These findings highlight that the carbon footprint of AWCS is primarily driven by operational electricity use and suggest that electricity supply transition plays a critical role in achieving emission reduction.

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