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US 5,207,927 AGranted
Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds
AssigneeUop LLC
InventorsRichard E. Marinangeli, Tom N. Kalnes
Life of this patent
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Abstract
A method for treating an aqueous stream containing a water-soluble, inorganic sulfide compound wherein the stream is contacted with oxygen at a pH in the range of less than about 12 and an oxygen to sulfur molar ratio greater than about 5 with an oxidizing catalyst at oxidation conditions selected to provide a high conversion of the inorganic sulfide compound to sulfate to thereby produce a substantially sulfide-free treated aqueous product stream.
Claims12
A method for treating an aqueous stream containing a water-soluble, inorganic sulfide compound which method comprises the steps of:
- (a) contacting said aqueous stream and oxygen at a pH in the range less than about 12 and an oxygen to sulfur molar ratio greater than about 5 with a metallic phthalocyanine oxidizing catalyst at oxidation conditions selected to provide a high conversion of said inorganic sulfide compound in an amount greater than about 95 weight percent to sulfate;
- and
- (b) recovering a substantially sulfide-free treated aqueous stream.
Dependencies are inferred from the claim text.