MATERIAL FLOW ANALYSIS OF BEVERAGE CONTAINERS IN COLLECTION AND RECOVERY PROCESSES OF MUNICIPALITIES

摘要

Material flow of glass bottles, steel and aluminum cans, and PET bottles in municipalities were analyzed through extensive questionnaire surveys concerning collection and material recovery. Among options available for collecting beverage containers from householders, municipality's curbside collection accumulates the largest mass. However, recovery rate of collected material in material recovery facilities significantly drop when glass bottles are loaded in mechanical truck both in single and mixed material collection due to the breakage of glass at the time of collection. In terms of energy consumption and cost for collection and recovery, several collection scheme, combination of track and material, were evaluated. Instead of curbside collection, bring system to material banks at high-density can be used to obtain high collection rate of material.