Abstract
Disaster waste management should be conducted in an environmentally and economically friendly manner, although disaster waste should be demolished and removed as soon as possible after a natural disaster. The aim of this study was to develop methods to conduct environmental and economic evaluation of pre-disaster waste management. A disaster waste management system consists of processes such as transportation, storage and separation at primary and secondary temporary storage sites, incineration, crushing, landfilling and recycling. Firstly, environmental and economic intensity data for each process was created via interview and literature surveys. Then, proposed methods was applied to the disaster waste management related to the 2016 Kumamoto Earthquakes, which occurred in Kumamoto Prefecture, Japan as the case study. Our results indicate that CO2 emission, SOx emission and cost from this disaster waste management method were 390 – 630 kt, 2,500 – 3,000 t and 630–710 kUSD. In particular, the SOx emission from such corresponded to 29 – 35 % of total annual SOx emission in Kumamoto Prefecture. This result revealed that the impact on regional air pollution via managing disaster waste is considerable.
