Surface treated calcium carbonate and its use in waste water...

Details Surface treated calcium carbonate and its use in waste water... Surface treated calcium carbonate and its use in waste water...

C - Chemistry, Metallurgy

02

F

C02F 1/28 (2006.01) C01F 11/18 (2006.01) B01J 20/04 (2006.01) C02F 1/56 (2006.01)

Patent

CA 2679248

The present invention relates to a process for the purification of water, wherein a surface-reacted natural calcium carbonate is brought into contact with the water to be purified, the surface-reacted natural calcium carbonate being the reaction product of a natural calcium carbonate with an acid and carbon dioxide, which is formed in situ by the acid treatment and/or supplied externally.

La présente invention concerne un processus de purification d'eau utilisant un carbonate de calcium naturel qui a réagi en surface qui est mis en contact avec de l'eau à purifier, le carbonate de calcium naturel qui a réagi en surface étant le produit de réaction d'un carbonate de calcium naturel avec un acide et du dioxyde de carbone, qui est formé in situ par le traitement acide et/ou amené de l'extérieur.

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