Process for reducing the concentration of multivalent...

Details Process for reducing the concentration of multivalent... Process for reducing the concentration of multivalent...

B - Operations, Transporting

01

D

B01D 15/04 (2006.01) B01J 47/10 (2006.01) C02F 1/28 (2006.01) C23C 18/16 (2006.01) C25D 21/20 (2006.01) C25D 21/22 (2006.01)

Patent

CA 2198505

The process comprises the circulation through a column of the liquid to be purified and a superabsorbent, preferably of the polyacrylic type, the rising speed of the liquid being selected so that, in the column, a superabsorbent simply swollen is in a stationary dynamic condition, while the superabsorbent charged with multivalent ions forms sediments at the base of the column. Application to the treatment of water used for rinsing parts which have been subjected to a nickeling treatment.

Le procédé consiste à faire transiter dans une colonne le liquide à épurer et un superabsorbant, de préférence de type polyacrylique, la vitesse ascensionnelle du liquide étant choisie de façon telle que dans la colonne, le superabsorbant simplement gonflé soit en régime de dynamique stationnaire, tandis que le superabsorbant chargé d'ions multivalents sédimente au pied de colonne. Application au traitement des eaux de rinçage des pièces ayant subi un traitement de nickelage.

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