Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds to selectively produce the corresponding sulfate.

摘要

An aqueous stream containing a water-soluble, inorganic sulfide compound is treated to selectively produce the corresponding sulfate by contacting the aqueous stream and oxygen at a pH of less than 12 and at an oxygen to sulfur molar ratio greater than 5:1 with an oxidizing catalyst at oxidation conditions effective to selectively convert at least 95% of the inorganic sulfide compound to the corresponding sulfate to thereby produce a substantially sulfide-free treated aqueous product stream.