PROCESSO PARA A PURIFICAÇÃO DE ÁGUA, USO DE CARBONATO DE CÁLCIO NATURAL REAGIDO NA SUPERFÍCIE, E, MATERIAL COMPÓSITO

摘要

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.