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Article Dans Une Revue Journal of Membrane Science Année : 2020

Influence of membrane resistance on swelling and removal of colloidal filter cake after filtration pressure release

Résumé

The influence of filtration membrane resistance on colloidal filter cake swelling after the filtration pressurerelease is discussed in frame of filtration-consolidation theory. It is argued that in the case of reversiblycompressible filter cake, the solid pressure relaxation can result in filtrate inflow across the membrane with thefollowing absorption by the filter cake part adjacent to the membrane surface. According to the model results, thefiltrate inflow and the filter cake swelling rates increase with decreasing of the membrane hydraulic resistance.At low membrane resistance, the swelling can result in the non-monotonous bell-like solid concentration distribution in the filter cake (solid concentration on the cake-membrane surface is lower than the maximal solidconcentration). In contrast, the filter cake swelling in the absence of filter inflow across the membrane (or thedeposit swelling on the impermeable surface) results in the monotonous decrease of the solid concentration. Thenon-monotonous solid concentration distribution can facilitate the membrane rinsing and cleaning and lead tothe filter cake removal before its complete swelling.
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Dates et versions

hal-02324201 , version 1 (20-07-2022)

Licence

Paternité - Pas d'utilisation commerciale

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Maksym Loginov, Floriane Doudies, Nicolas Hengl, Frédéric Pignon, Geneviève Gésan-Guiziou. Influence of membrane resistance on swelling and removal of colloidal filter cake after filtration pressure release. Journal of Membrane Science, 2020, 595, pp.117498. ⟨10.1016/j.memsci.2019.117498⟩. ⟨hal-02324201⟩
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