Process for the demineralization of a liquid containing...

C - Chemistry – Metallurgy – 02 – F

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C02F 1/42 (2006.01) A23C 9/144 (2006.01) A23C 9/146 (2006.01) B01J 39/04 (2006.01) B01J 49/00 (2006.01) C02F 1/469 (2006.01)

Patent

CA 2189681

Method for the demineralization of a liquid containing dissolved organic substances and mineral salts. The liquid is treated by percolation thereof on a strong monovalent cationic ion exchange resin (1), passing a given batch of liquid from the previous stage, and a hypersaline solution for receiving the ions from the liquid, in a loop in at least one electrodialyzer (8) comprising two compartments including a plurality of anionic membranes (A) and a plurality of interposed cationic membranes (C), and regenerating the ion exchange resin (1) with the hypersaline solution having a salt concentration of 90-110 grams per liter.

Procédé de déminéralisation d'un liquide contenant en solution des matières organiques et des sels minéraux selon lequel le traitement du liquide comporte les étapes suivantes: percolation du liquide sur une résine (1) d'échange d'ions cationique forte, monovalents; passage en boucle dans au moins un électrodialyseur (8) dit à deux compartiments comportant une pluralité de membranes anioniques (A) et une pluralité de membranes cationiques (C) intercalées, d'une part d'une quantité (batch) déterminée de liquide issue de l'étape précédente et d'autre part, d'une saumure d'accueil des ions issus du liquide, régénération de la résine (1) échangeuse d'ions par la saumure dont la concentration en sels est comprise entre 90 et 110 grammes par litre.

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