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Filtration frontale sur membrane : mise en évidence du volume filtré critique pour l'anticipation et le contrôle du colmatage

Abstract : Membrane processes running in dead-end mode are limited by fouling. Control and anticipation of fouling are thus essential in improving process management: they are the focus of this study where the application in view is drinking-water production. It has been found experimentally that the transition between a reversible accumulation of matter (dispersed phase) and an irreversible deposit (condensed phase) can be characterized by a critical filtered volume; its dependence on filtration flux has been investigated with different kinds of dispersion. By analysing and simulating filtration, using models for the properties of the suspended colloids, the critical filtered volume was found to be related to osmotic pressure. These results have been used to improve the operating mode for filtering natural waters: when rinsing steps are performed before the filtered volume reaches its critical value, there is a significant decrease in fouling and an improvement in energy efficiency.
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https://tel.archives-ouvertes.fr/tel-00143769
Contributor : Yolaine Bessiere <>
Submitted on : Thursday, April 26, 2007 - 6:13:28 PM
Last modification on : Friday, February 5, 2021 - 12:30:02 PM
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  • HAL Id : tel-00143769, version 1

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Yolaine Bessiere. Filtration frontale sur membrane : mise en évidence du volume filtré critique pour l'anticipation et le contrôle du colmatage. Génie des procédés. Université Paul Sabatier - Toulouse III, 2005. Français. ⟨tel-00143769⟩

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