Inventory Analysis of Waste Management including Bio-Waste Recycling in Kariya and Chiryu Cities

Abstract

Object. Environmental impact of waste processing including bio-waste recycling of Kariya and Chiryu cities, Aichi-prefecture was quantitatively analyzed by LCA procedure to propose the future waste management. In this study, the system boundary covers the generation, collection, treatment, recycling and landfill of municipal solid waste. We employed three scenarios for future waste management to evaluate the amount of GHG emission and landfill. Scenario-1, 2, and 3 introduced waste food oil recycling to bio diesel fuel, kitchen garbage recycling to bio-ethanol, and combustible waste recycling to bio-gas, respectively.
Results and Discussion. Brief outlin6e of each scenario is as follows; in the case of scenario-1 the amount of GHG emission somewhat decreases due to the use of bio diesel fuel, in the case of scenario-2 that of GHG emission is not decreased because the consumption of bio-ethanol is small quantity and the amount of incinerated ash is not decreased, and in the case of scenario-3 that of GHG emission decreases due to the use of bio-gas truck fuels and the introduction of bio-gas power generation, and that of incinerated ash is not decreased.
Conclusions. It is thought that combination of scenario-1 and Scenario-3 is desirable for the future waste management of Kariya and Chiryu cities because bio-waste recycling is effective to reduce the GHG emission.