Process for removing mercury and mercury salts from liquid effluents

Mercury and mercury salts are removed from liquid effluents (which may also comprise muds and inert products in suspension) by reacting the liquid effluents, at a pH of from 9 to 14, with thiourea or a hydroxylamine salt, and subsequently separating the resulting precipitate, together with muds and...

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Bibliographische Detailangaben
Hauptverfasser:	TUBIELLO, GIUSEPPE, PATRON, GERMANO, RATTI, GIANLUIGI, NAPOLI, DOMENICO, NARDONE, FRANCO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Mercury and mercury salts are removed from liquid effluents (which may also comprise muds and inert products in suspension) by reacting the liquid effluents, at a pH of from 9 to 14, with thiourea or a hydroxylamine salt, and subsequently separating the resulting precipitate, together with muds and inert products, if any, by clari-flocculation.