Method for removing hydrogen sulfide from aqueous streams
AssigneeGeneral Electric Company
InventorBang M. Kim
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Abstract
Waste water containing dissolved hydrogen sulfide is passed through a vessel containing redox resin which oxidizes the dissolved hydrogen sulfide to elemental sulfur which is removed from the waste water, preferably through filtration. The method of the present invention is also particularly desirable in that the redox-active resin may be restored to a high oxidation state by contacting the resin with an oxidizing fluid such as humidified air or oxygen. The restoration of the redox-active resin is particularly easy when the resin is disposed within a vessel as a membrane dividing the interior volume of the vessel into separate chambers: one chamber for the passage of the waste water and the other chamber for the passage of oxidizing fluid.
Claims11
A method for removing hydrogen sulfide from waste water and other aqueous solutions, comprising:
- passing said solution through a vessel containing at least one redox resin material having a high oxidation state, so as to contact said solution with said resin material said redox resin material comprising a membrane dividing said vessel into two volumes said solution being passed through a first of said volumes;
- passing an oxygenated fluid through the second of said volumes so as to contact said membrane and to increase the oxidation state of said redox resin.
A method for removing hydrogen sulfide from waste water and other aqueous solutions, comprising:
- passing said solution through a vessel containing at least one redox resin material having a high oxidation state, so as to contact said solution with said resin material;
- ceasing the flow of solution through said vessel;
- and regenerating said redox resin material by passing an oxidizing fluid through said vessel, said fluid being selected from the group consisting of humidified air and humidified oxygen.
A method for removing hydrogen sulfide from waste water and other aqueous solutions, comprising:
- passing said solution through a vessel containing at least one redox resin material having a high oxidation state, so as to contact said solution with said resin material;
- and
- simultaneously with said passing step, regenerating said redox resin material by passing an oxidizing fluid through said vessel, said fluid being selected from the group consisting of humidified air and humidified oxygen.
Dependencies are inferred from the claim text.