The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1993
Filed:
Nov. 21, 1991
Applicant:
Inventors:
Dale A Jenson, Overland Park, KS (US);
Anne Z Jezak, Mission, KS (US);
Albert O Massey, Beaumont, TX (US);
Assignee:
Ashland Oil, Inc., Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210754 ; 210759 ;
Abstract
This invention relates to a method of reducing the concentration of sulfides in an aqueous system by first treating the aqueous system with hydrogen peroxide to lower the sulfide concentration to approximately 300 ppm, or less, then subsequently treating the aqueous system with chlorine dioxide to further reduce the sulfide concentration to a desirable level. The method of the invention is capable of reducing the sulfide content of the treated aqueous system to as low as tenths of a part of sulfide per million parts of sour water.