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

摘要

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.