Abstract
Taking the vertical plastic concrete cutoff barrier in the Guizhou Tianzhu Chemical Phase II landfill as the research object, the Hydrus-2D finite element simulation software was used to investigate the migration law of barium ion. Firstly, a plastic concrete soil column model was established, and the initial conditions of barium ion concentration, hydraulic head, and the boundary conditions of barium ion concentration were set. The software simulated the temporal and spatial variations of barium ion concentration in the vertical plastic concrete cutoff barrier, and evaluated the barrier effect of the vertical plastic concrete cutoff barrier on barium ions. The study revealed the following: (1) The vertical plastic concrete cutoff barrier exhibits a good barrier effect on the migration of barium ions. (2) The fastest migration of barium ions in the vertical plastic concrete cutoff barrier occurs at a depth of 22 m from top to bottom, making it more prone to breakthrough by barium ions. (3) For safety reasons, a barium ion concentration of 4 mg/L is recommended as the breakthrough criterion in the engineering project.
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Acknowledgements
The authors would like to thank National Natural Science Foundation of China (Grant No. 42007263), the ‘Qing Lan Project’ of the Jiangsu Higher Education Institutions of China (2023), the Key Research and Development Program (Social Development) project of Zhenjiang (Grant No. SH2022017), the Science and Technology Project of the Ministry of Housing and Urban-Rural Development of China (Grant No. 2019-K-136), the China Postdoctoral Science Foundation funded project (Grant No. 2020M671297) and the Project of Research Innovation of Graduate Student in Jiangsu Province of China (Grant No. SJCX23_2230) for supporting the research.
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Yao, J., Xu, H., Liang, J., Zhang, W., Hou, S. (2024). Numerical Simulation of Ba2+ Transport in Vertical Plastic Concrete Cutoff Barrier. In: Wan, Z. (eds) Water Resources Management and Water Pollution Control. ISWPT 2023. Environmental Science and Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-53456-0_14
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