Inventory Analysis of Waste Management in Kariya and Chiryu Cities

Abstract

Objective. Environmental impact of waste processing of Kariya and Chiryu cities Aichi-prefecture was quantitative analyzed by LCA procedure to propose the future waste processing. In this study, the system boundary was covered from the generation of municipal solid waste to landfill. We employed three scenarios for future system to evaluate amount of CO₂ emission and incinerated ash. Scenario1, 2, and 3 introduced waste power generation, waste by processing direct melting furnaces and ash melting furnaces, respectively.
Results and Discussion. Brief outline of each scenario is as follows; 1) the amount of CO₂ emission is not largely decreased by the introduction of waste power generation, 2) the amount of CO₂ emission increases in the case of scenario2 because the consumed fuel is large, but the amount of incinerated ash is drastically decreased, and 3) the amount of CO₂ emission somewhat increases in the case of scenario3 because fuel consumption for ash melting is relatively large, but the amount of incinerated ash is drastically decreased.
Conclusions. It is thought that the stringency of the final disposal site, which is the problem of both cities, may be solved by setting up the ash melting furnace in the stoker furnace.