Coupling simulation study to understanding the complex mathematical structure in landfills

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04766
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 22060:Environmental systems for civil engineering-related
• Research Institution: Center for Environmental Science in Saitama
• Principal Investigator: Suzuki Kazuyuki 埼玉県環境科学国際センター, 資源循環・廃棄物担当, 主任研究員 (70379824)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 廃棄物最終処分場 / 連成解析 / 数値シミュレーション / テストセル / PRB

Outline of Final Research Achievements

In this study, we have been developed numerical analysis methods for the several coupled phenomena in order to elucidate the complex phenomena in landfills. Furthermore, we expanded these developed programs to simulate the phenomena in pilot-scale landfills (test cells). Concerning the internal phenomena of the test cells, we specifically focused on the trapping mechanism of pollutants by the permeable reactive barrier. The adsorption parameters used in the numerical calculations were determined through simplex method based on column adsorption experiment results. The convection-diffusion equation incorporating the adsorption process is used as a governing equation. We conducted numerical simulations and compared the long-term monitoring data from the test cells with the numerical analysis results.

Free Research Field

廃棄物工学

Academic Significance and Societal Importance of the Research Achievements

本研究の連成シミュレーション手法により、長期汚染物質動態シミュレーションの予測が可能となり、今後の廃棄物最終処分場の設計や維持管理に活用できることが期待される。