Method for removing hydrogen sulfide from aqueous streams

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...

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210763, 210916, C02F 172

Patent

active

044552360

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.

REFERENCES:
patent: 3104951 (1963-09-01), Urban
patent: 4076621 (1978-02-01), Hardison
Kunin, Ion Exchange Resins, Robert E. Krieger, N.Y., 1972, pp. 97-98.
Electron Exchange-Polymers, III, Polymers and Copolymers of Hydroquinone, (Myer Ezrin, Ivor H. Updegraff and Harold G. Cassidy, vol. 75, pp. 1610-1614, Journal of Americal Chemical Society, 1953.

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