Process for the purification of water

Details Process for the purification of water Process for the purification of water

C - Chemistry, Metallurgy

02

F

C02F 1/28 (2006.01) C02F 1/56 (2006.01)

Patent

CA 2679356

The present invention relates to a process for the purification of water by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20 °C, to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids and the use of the surface-reacted natural calcium carbonate for this process.

La présente invention concerne un processus destiné à la purification d'eau par l'ajout de carbonate de calcium naturel ayant réagi en surface ou d'une suspension aqueuse d'un carbonate de calcium ayant réagi en surface et possédant un pH supérieur à 6,0 mesuré à 20°C à un milieu, ledit carbonate de calcium ayant réagi en surface étant un produit de réaction d'un carbonate de calcium naturel avec de l'oxyde de carbone et d'un ou plusieurs acides, et l'utilisation du carbonate de calcium naturel dans ce processus.

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