B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 65/08 (2006.01) B01D 61/04 (2006.01) B01D 61/16 (2006.01) C02F 1/44 (2006.01) C02F 1/52 (2006.01)
Patent
CA 2393441
The invention relates to improvements made to membrane filtration, especially micro-, ultra-, nano- or hyperfiltration of effluents containing suspended matter, especially water. The aim of said improvements is to reduce the fouling of the membranes and to improve the filtration capacity. The improvements are characterized in that they consist of adding a dose of a coagulation reagent to the effluent before it passes over the membrane, this reagent destabilizing the colloidal matters in suspension. The dose is 30 to 80 times less than that which would cancel out the Zeta potential.
Perfectionnements apportés à la filtration sur membranes, notamment de micro-, ultra-, nano-, ou hyperfiltration d'ef-fluents contenant des matières en suspension, notamment de l'eau, en vue de réduire le colmatage des membranes et d'améliorer la capacité de filtration de celles-ci, caractérisés en ce qu'ils consistent à ajouter à l'effluent, avant son passage sur ladite membrane, une dose d'un réactif de coagulation déstabilisant les matières colloïdales en suspension, qui est de l'ordre de 30 à 80 fois inférieure à la dose annulant le potentiel Zéta.
Degremont
Goudreau Gage Dubuc
Ondeo Degremont
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