抄録
The most severe disasters generate debris and waste in quantities that can overwhelm existing solid waste management facilities, therefore it is stored in the temporary disaster waste pile for further reuse and recycling. Since waste is highly heterogeneous, it is separated into different material and let under meteorological conditions. Due to high moisture content and anaerobic condition inside the pile, wood particles deteriorate quality and along with organic matter even initiate a spontaneous fire. Better understanding of gas behavior inside a disaster waste pile could lead to improve storage method and preserve waste quality and energy respectively. Furthermore, avoiding spontaneous fire would benefit safe storage without additional costs. The objective of this paper is to determine the variation of gas component and temperature in a simulated temporary disaster waste pile in order to enhance methods and condition of a storage site. A column experiment was used to simulate waste pile under different physical conditions. Gas chromatography was utilized to investigate the diffusion behavior of disaster waste pile. The temperature was continuously measured in various waste profiles and the influence on waste storage was examined. Based on disaster waste characteristics, waste material was analyzed under various moisture condition and density. In order to calculate the diffusion coefficient, it was assumed that the gas concentration curve of the diffusion, is obtained as a sum of the contributions of the corresponding single components under different density and moisture content. The paper demonstrates that the density level and waste characteristic could provide an indication of the gas behavior in the waste pile. Results show that diffusion characteristics are varied with solid waste dry density and composition.
