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US 2017/0283286 A1Published application
Sodium Nitrite Oxidation of Hydrogen Sulfide
AssigneeUnited Laboratories International, LLC
InventorsJack G. Frost, Kenneth J. Snyder, JR.
Life of this patent
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Abstract
A method for treating hydrogen sulfide in a solution includes providing the solution containing hydrogen sulfide. The method also includes adding sodium nitrite to the solution in an amount suitable to react with the hydrogen sulfide and treat the hydrogen sulfide.
Claims20
A method for removing hydrogen sulfide from water, wherein the water comprises hydrogen sulfide, comprising:
- adding sodium nitrite to the water in an amount suitable to react with the hydrogen sulfide in the water and remove hydrogen sulfide from the water;
- and
- adding a pH buffer periodically to the water to maintain a pH of the water, wherein the pH buffer comprises citric acid, phosphoric acid, boric acid, or any combinations thereof.
A method for removing hydrogen sulfide from water, wherein the water comprises hydrogen sulfide, comprising:
- (A) adding sodium nitrite to the water in an amount suitable to react with the hydrogen sulfide in the water and remove hydrogen sulfide from the water;
- (B) blowing a gas onto the water to remove ammonia formed by a reaction of sodium nitrite and the hydrogen sulfide;
- and
- (C) adding a pH buffer periodically to the water to maintain a pH of the water between about 7.0 to about 9.0 and to remove free ammonia from the water.
1 more element
Dependencies are inferred from the claim text.