地域間廃棄物産業連関分析（IR-WIO）による家庭用生ごみ処理機のLCA

抄録

As the waste issue is site-dependent problem, the waste treatment policy of each municipal tends to determined independently. However, it is important to check the effect of the policy not only to the municipal itself but also to the whole society. In this study, we proposed the evaluation method of the municipal policy by using interregional waste input-output (IR-WIO) analysis. As a case example, we choose LCA of garbage disposal for household use. We assume that garbage disposals are used in households in Tokyo, and examine the effect for the economic activities and the environmental loads to Tokyo and other regions. Our computational results show that, if the compost generated by the garbage disposal is used in households, the environmental loads decrease in Tokyo, but increase in the other regions which cause, in total, decrease of CO₂ emission as the whole society. However, if the compost generated by the garbage disposal is emitted as general wastes, the decrease of the environmental loads is much less than in the former case, then the environmental loads increase as the whole society. We found that our assumed policy makes positive beneficial effects on the economic activities and the reduction of waste in the whole society.