2022 Fiscal Year Final Research Report

Research on stable operation of incineration facilities and recycling of incineration residues in response to changes in waste composition

Research Project

PDF

Project/Area Number	20K12277
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 64050:Sound material-cycle social systems-related
Research Institution	National Institute for Environmental Studies
Principal Investigator	Iino Shigenori 国立研究開発法人国立環境研究所, 福島地域協働研究拠点, 主任研究員 (90792531)
Co-Investigator(Kenkyū-buntansha)	遠藤和人国立研究開発法人国立環境研究所, 福島地域協働研究拠点, 室長 (10353533) 荒井康裕東京都立大学, 都市環境科学研究科, 准教授 (50326013) 辰市祐久公益財団法人東京都環境公社(東京都環境科学研究所), 環境資源研究科, 研究員(移行) (90869744)
Project Period (FY)	2020-04-01 – 2023-03-31
Keywords	ごみ組成 / 焼却 / 焼却残渣 / 安定運転 / 有効利用
Outline of Final Research Achievements	With the spread of waste volume reduction measures and changes in lifestyles, it is expected that the composition of MSW to be accepted at incineration facilities will change in the future. Therefore, using data from 21 facilities with different furnace types for the past five years (four times a year), a prediction model was constructed to express the relationship among furnace type, bottom ash composition, and MSW composition through multiple regression analysis. Macroscopic analysis was also conducted for 18 stoker furnaces (2015-2018) on the relationship between MSW composition and the amount of incineration residue generated and elements contained. It was found that the generation of bottom ash and fly ash was larger when there was less paper and more plastics. A trend was obtained where total chromium was larger when there was more paper and less plastics, and copper, zinc, selenium, and lead were larger when there was less paper and more plastics.
Free Research Field	廃棄物工学
Academic Significance and Societal Importance of the Research Achievements	ごみの組成は時代によって変化しており、近年ではごみ減量化施策やライフスタイルの変化によって徐々に変わってきている。そして、ゼロカーボン施策や更なる環境意識の高まりによって、今後も変化し続けることが予測される。ごみ組成が変化すると、焼却炉の運転や焼却残渣の性状（量や含有元素）にも影響を及ぼし、廃棄物の適正管理という側面から考えるとごみ組成は極めて重要な要素である。そこで、本研究では、過去のアーカイブ試料を用いて、ごみ組成が焼却残渣に及ぼす影響について明らかにし、ごみ組成変化から焼却残渣の性状を予測できるモデルの構築を実施し、将来的な廃棄物の適正管理に向けた基本的情報を整備した。