Method for regulating a membrane filtering installation

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 61/22 (2006.01) B01D 65/02 (2006.01) B01D 65/08 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2431305

The invention concerns a method for avoiding irreversible membrane clogging while maximising productivity, whatever the quality of the fluid at the installation intake. It consists in automatically controlling the installation operating parameters by performances induced by the quality of the fluid to be treated, based on predictions concerning the evolution of the membrane clogging carried out by modelling with a neuron network so as to simulate the long term operating conditions of the membrane filtering installation, the model enabling, on the basis of the quality of the in-flowing fluid and on the state of the membranes during a given cycle, to calculate the evolution of the clogging state of said membranes on a time basis, on a specific horizon, said calculation being performed for a simulated in-flowing quality, constant or variable, on said horizon (H) and to control and adjust the installation operating parameters.

Ce procédé vise à éviter le colmatage irréversible des membranes tout en maximisant la productivité, quelle que soit la qualité du fluide à l'entrée de l'installation. Il consiste à asservir les paramètres de fonctionnement de l'installation aux performances induites par la qualité du fluide à traiter, en fonction de prédictions d'évolution du colmatage membranaire effectuées par modélisation par réseaux de neurones de façon à simuler le fonctionnement à long terme de l'installation de filtration sur membranes, le modèle permettant en fonction de la qualité du fluide influant et de l'état des membranes lors d'un cycle donné, de calculer l'évolution de l'état de colmatage desdites membranes en fonction du temps, sur un horizon déterminé, ledit calcul étant effectué pour une qualité du fluide influant simulée, constante ou variable, sur cet horizon (H) et de contrôler et d'ajuster les paramètres de fonctionnement de l'installation.

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