Abstract
To optimize the landfill operation and to ensure optimal distribution of water content in recirculation, a three-dimensional dual-permeability numerical flow model is proposed to simulate vertical wells recirculation in bioreactor landfills. Compared with the traditional single-porosity model, the dual-permeability model considering the highly heterogeneity of waste materials divides the porous media into two interacting pore domains, and can be used to reflect the preferential movement in the heterogeneous media. The governing equations are solved by a self-define solver using finite volume method in an open source platform OpenFOAM. The accuracy of the proposed model is verified by the numerical software Hydurs. A typical three-dimensional landfill cell with a vertical leachate recirculation well is adopted to show the performance of proposed model. The result indicates that the preferential movement of leachate makes a significant impact on the water content distribution in recirculation, and the single-porosity model will underestimate the volume and radius of impact zones in vertical wells for leachate recirculation.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Benson, C.H., Barlaz, M.A., Lane, D.T., Rawe, J.M.: Practice review of five bioreactor/recirculation landfills. Waste Manag. 27(1), 13–29 (2007)
Warith, M.: Bioreactor landfills: experimental and field results. Waste Manag. 22(1), 7–17 (2002)
Jasak, H.: Error analysis and estimation for the finite volume method with applications to fluid flows. Ph.D. Thesis, University of London Imperial College, London, the UK (1996)
Capelo, J., de Castro, M.A.: Measuring transient water flow in unsaturated municipal solid waste - a new experimental approach. Waste Manag. 27(6), 811–819 (2007)
Gerke, H.H., Genuchten, M.T.V.: A dual-porosity model for simulating the preferential movement of water and solutes in structured porous media. Water Resour. Res. 29(2), 305–319 (1993)
Audebert, M., Clément, R., Moreau, S., Duquennoi, C., Loisel, S., Touze-Foltz, N.: Understanding leachate flow in municipal solid waste landfills by combining time-lapse ERT and subsurface flow modelling – Part I: analysis of infiltration shape on two different waste deposit cells. Waste Manag. 55, 165 (2016)
Han, B., Scicchitano, V., Imhoff, P.T.: Measuring fluid flow properties of waste and assessing alternative conceptual models of pore structure. Waste Manag. 31(3), 445–456 (2011)
Tinet, A.J., Oxarango, L., Bayard, R., Benbelkacem, H., Stoltz, G., Staub, M.J., et al.: Experimental and theoretical assessment of the multi-domain flow behaviour in a waste body during leachate infiltration. Waste Manag. 31(8), 1797–1806 (2011)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Bai, ZB., Feng, SJ., Lu, SF. (2018). A Three-Dimensional Dual-Permeability Numerical Flow Model in Bioreactor Landfills. In: Farid, A., Chen, H. (eds) Proceedings of GeoShanghai 2018 International Conference: Geoenvironment and Geohazard. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0128-5_32
Download citation
DOI: https://doi.org/10.1007/978-981-13-0128-5_32
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0127-8
Online ISBN: 978-981-13-0128-5
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)