LONG-TERM STORAGE OF POTABLE WATER IN METALLIC VESSELS
First Claim
1. A method for controlling microbial growth in potable water stored in a vessel having a metallic surface, the method comprising:
- heating the metallic surface of the vessel to a temperature between about 480°
C. (900°
F.) and about 870°
C. (1600°
F.);
exposing the metallic surface of the vessel to oxygen during heating to oxidize potential reduction sites on the metallic surface; and
charging potable water containing silver ions to the vessel.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling microbial growth in potable water stored in a vessel having a metallic surface includes heating the metallic surface to a temperature between about 480° C. (900° F.) and about 870° C. (1600° F.), exposing the metallic surface to oxygen during heating to oxidize potential reduction sites on the metallic surface and charging potable water containing silver ions to the vessel. A vessel having a metallic surface is prepared for long-term storage of potable water containing silver ions by heating the metallic surface to a temperature between about 480° C. (900° F.) and about 870° C. (1600° F.) and exposing the metallic surface to oxygen during heating to oxidize electropositive metals on the metallic surface or by treating the metallic surface with an aqueous solution containing on oxidizing agent to oxidize potential reduction sites on the metallic surface.
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Citations
21 Claims
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1. A method for controlling microbial growth in potable water stored in a vessel having a metallic surface, the method comprising:
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heating the metallic surface of the vessel to a temperature between about 480°
C. (900°
F.) and about 870°
C. (1600°
F.);exposing the metallic surface of the vessel to oxygen during heating to oxidize potential reduction sites on the metallic surface; and charging potable water containing silver ions to the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for preparing a vessel having a metallic surface for long-term storage of potable water containing silver ions, the method comprising:
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heating the metallic surface of the vessel to a temperature between about 480°
C. (900°
F.) and about 870°
C. (1600°
F.); andexposing the metallic surface of the vessel to oxygen during heating to oxidize electropositive metals on the metallic surface. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for preparing a vessel having a metallic surface for long-term storage of potable water containing silver ions, the method comprising:
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forming an aqueous solution containing on oxidizing agent; and treating the metallic surface of the vessel with the aqueous solution containing on oxidizing agent to oxidize potential reduction sites on the metallic surface.
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19. A method for controlling silver ion concentrations in water stored in a vessel having a metallic surface, the method comprising:
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silver plating a portion of the metallic surface to reduce potential sites for silver reduction on the metallic surface; filling the vessel with potable water.
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20. A vessel for long-term storage of potable water having a metallic surface, wherein the metallic surface of the vessel is oxidized by heating the metallic surface to a temperature between about 480°
- C. (900°
F.) and about 870°
C. (1600°
F.) and exposing the metallic surface to oxygen during heating to decrease reduction potential of the metallic surface, and wherein the metallic surface is treated with a solution containing silver ions to further decrease reduction potential of the metallic surface.
- C. (900°
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21. A vessel for containing potable water comprising silver ions, the vessel comprising:
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a metallic surface, wherein a majority of electropositive elemental metals present on the metallic surface are oxidized to prevent reduction of silver ions; an outlet for discharging potable water from the vessel; and a filter for preventing microbes from exiting the vessel at the outlet.
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Specification