MERCURY REMOVING METHOD

PROBLEM TO BE SOLVED: To provide a mercury removing method by which mercury is removed from a mercury-containing aqueous solution without generating harmful hydrogen sulfide gas and a solid content solid-liquid separated from the aqueous solution is reused as a raw material for cement additive or a...

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Bibliographische Detailangaben
Hauptverfasser:	YOKOTA MORIHISA, TERADA SUMIO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG TRANSPORTING TREATMENT OF NATURAL STONE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a mercury removing method by which mercury is removed from a mercury-containing aqueous solution without generating harmful hydrogen sulfide gas and a solid content solid-liquid separated from the aqueous solution is reused as a raw material for cement additive or a raw material for clinker. SOLUTION: The method for removing mercury from the aqueous solution containing mercury includes a step where chlorine bypass dust containing sulfide sulfur is added in the aqueous solution containing mercury, and after mixing, solid-liquid separation is applied. After solid-liquid separation, ferric salt compound is added in a liquid phase, the pH of the liquid phase is adjusted to 8-12 and after addition of a polymer flocculant, further the solid-liquid separation is carried out. COPYRIGHT: (C)2011,JPO&INPIT