APPARATUS AND METHOD FOR TREATING SILICA-CONTAINING WATER

Provided are an apparatus and a method both for treating silica-containing water, whereby it becomes possible to reduce the amount of a magnesium compound to be used in the treatment of silica in the silica-containing water. An apparatus 1 for treating silica-containing water, provided with: a react...

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Bibliographische Detailangaben
Hauptverfasser:	TAKIGUCHI Keisuke, NAKANO Toru
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Provided are an apparatus and a method both for treating silica-containing water, whereby it becomes possible to reduce the amount of a magnesium compound to be used in the treatment of silica in the silica-containing water. An apparatus 1 for treating silica-containing water, provided with: a reaction vessel 12 which is configured to make silica insoluble at pH 10 or higher by adding a magnesium compound to the silica-containing water of interest or by utilizing magnesium contained in the water of interest; a precipitation vessel 16 which is configured to perform the solid-liquid separation of the resultant insoluble material; and a returning means which is configured to add an acid to at least a portion of sludge separated by the solid-liquid separation and return the resultant material to a preceding (upstream) section of the precipitation vessel 16.