A method for treating liquid effluents and recovering metals

A method for treating liquid effluents and recovering metals

Process for treating liquid effluents and recovering metals, comprising the steps of a) equalizing the liquid effluent; b) ) adding sulfides and metal precipitation in the form of metal sulfides; c) separating solid/liquid from the metal sulfides obtained in step (b) and forming a liquid phase (10)...

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Hauptverfasser: DA SILVA GERALDO LUIZ, DE SOUZA CLAUSON, SILVA ROBERTO MATTIOLI, EVELIN SALOMAO SOLINO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
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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creator DA SILVA GERALDO LUIZ
DE SOUZA CLAUSON
SILVA ROBERTO MATTIOLI
EVELIN SALOMAO SOLINO
description Process for treating liquid effluents and recovering metals, comprising the steps of a) equalizing the liquid effluent; b) ) adding sulfides and metal precipitation in the form of metal sulfides; c) separating solid/liquid from the metal sulfides obtained in step (b) and forming a liquid phase (10) free of metals; the process for treating liquid effluents and recovering metals further comprising the following steps: d) adding amine solution in a ratio of 50 to 250 g/L to the liquid phase (10) with magnesium precipitation in the form of magnesium hydroxide Mg(OH)2; and e) recovering the amine by depletion and rectification.
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subjects CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
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
title A method for treating liquid effluents and recovering metals
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