Use of surface-reacted natural calcium carbonate for purifying water

Disclosed is a process for the purification of water, wherein surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted natural calcium carbonate and having a pH of greater 5 than 6.0, measured at 20 degrees C, is added to the water to be purified, wherein the sur...

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Bibliographische Detailangaben
Hauptverfasser:	GANTENBEIN, DANIEL, GANE, PATRICK A, SCHOLKOPF, JOACHIM
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Disclosed is a process for the purification of water, wherein surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted natural calcium carbonate and having a pH of greater 5 than 6.0, measured at 20 degrees C, is added to the water to be purified, wherein the surface-reacted natural calcium carbonate is the reaction product of a natural calcium carbonate with carbon dioxide and one or more acids.