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AN IMPROVED HYDRODYNAMIC MODEL FOR PERCOLATION AND DRAINAGE DYNAMICS IN LEACH BED REACTORS

Abstract : This study concerns the hydrodynamic modelling of percolation and drainage cycles in the context of solid-state anaerobic digestion and fermentation (VFA platform) of household wastes (HSW) in leach bed reactors. The focus was made on the characterization of the water distribution and hydrodynamic properties of the bed. A numerical model, set up with experimental data, highlighted that the simple dual-porosity model was not able to correctly reproduce all the hydrodynamic features and particularly the drainage dynamics. The model was improved by adding a reservoir (immobile) water fraction to macroporosity and allowed to correctly simulate dynamics. This model enabled to explain more precisely the water behaviour during percolation processes and these results should be useful for driving either solid-state anaerobic digestion or fermentation reactors.
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https://hal.inrae.fr/hal-02967417
Contributor : Claire Dumas <>
Submitted on : Wednesday, October 14, 2020 - 10:23:31 PM
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  • HAL Id : hal-02967417, version 1

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Laura Digan, Pierre Horgue, Gérald Debenest, Sébastien Pommier, Etienne Paul, et al.. AN IMPROVED HYDRODYNAMIC MODEL FOR PERCOLATION AND DRAINAGE DYNAMICS IN LEACH BED REACTORS. Sardinia Symposium 2019, Sep 2019, Santa Maria di Pula, Italy. ⟨hal-02967417⟩

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