DEVELOPMENT OF BOTTOM-UP MATERIAL FLOW ESTIMATION METHOD USING ADMINISTRATIVE REPORT DATA: FOR INDUSTRIAL WASTE PLASTICS IN MIE PREFECTURE

Abstract

 In recent years, there has been a need to expand the circulation of waste plastics in Japan due to issues such as restrictions on the import of waste plastics in China and other countries, as well as the excessive quantity of microplastics in the ocean. In addition to macroflows at the national level, it is necessary to understand the detailed flow of waste plastics at the regional level in consideration of plastic circulation optimization. In accordance with the Waste Disposal Law and ordinances, there is an obligation to report industrial waste to prefectures, such as the implementation status reports of industrial waste large-volume discharge business operators, status reports on industrial waste management and those on electronic manifest registration, and the actual results reported by the industrial waste disposal industry. In this study, we developed a method for estimating material flow and spatial movement volume from the bottom up by using the preceding administrative report data.