Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB).
In: Frontiers of Environmental Science & Engineering, Jg. 17 (2023-11-01), Heft 11, S. 1-14
Online
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Zugriff:
The passive convergence-permeable reactive barrier (PC-PRB) was proposed to address the limitations of traditional PRB configurations. To evaluate the hydraulic and pollutant removal performance of the PC-PRB system, we developed a simulation code named PRB-Trans. This code uses the two-dimensional (2D) finite element method to simulate groundwater flow and solute transport. Case studies demonstrate that PC-PRB technology is more efficient and cost-effective than continuous permeable reactive barrier (C-PRB) in treating the same contaminated plume. Implementation of PC-PRB technology results in a 33.3% and 72.7% reduction in PRB length (L PRB ) and height (H PRB ), respectively, while increasing 2D horizontal and 2D vertical pollutant treatment efficiencies of PRB by 87.8% and 266.8%, respectively. In addition, the PC-PRB technology has the ability to homogenize the pollutant concentration and pollutant flux through the PRB system, which can mitigate the problems arising from uneven distribution of pollutants in the C-PRB to some extent. The L PRB required for PC-PRB decreases as the water pipe length (L p ) increases, while the H PRB required initially decreases and then increases with increasing L p . The effect of passive well height (H w ) on H PRB is not as significant as that of L p on H PRB . Overall, PC-PRB presents a promising and advantageous PRB configuration in the effective treatment of various types of contaminated plumes. [ABSTRACT FROM AUTHOR]
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Titel: |
Numerical modeling and performance evaluation of passive convergence-permeable reactive barrier (PC-PRB).
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Autor/in / Beteiligte Person: | Zheng, Kaixuan ; Xie, Dong ; Tan, Yiqi ; Zhuo, Zhenjiang ; Chen, Tan ; Wang, Hongtao ; Yuan, Ying ; Huang, Junlong ; Sun, Tianwei ; Xu, Fangming ; Dong, Yuecen ; Liang, Ximing |
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Zeitschrift: | Frontiers of Environmental Science & Engineering, Jg. 17 (2023-11-01), Heft 11, S. 1-14 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 2095-2201 (print) |
DOI: | 10.1007/s11783-023-1731-z |
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