Method and apparatus for increasing the oxygen content of water

• US 6,478,949 B1
• Filed: 11/14/2000
• Issued: 11/12/2002
• Est. Priority Date: 10/31/1996
• Status: Expired due to Fees

• Current Assignee: H2o Technologies Ltd.
• Original Assignee: H2o Technologies Ltd.
• Inventors: Johnson, Troy T., Hough, Gary S.
• Primary Examiner(s): Phasge, Arun S.
• Application Number:
  US09/713,162
• Time in Patent Office: 728 Days
• Field of Search: 204/743, 204/744, 204/755, 204/756, 204/229.2, 204/229.4, 204/275.1
• US Class Current: 205/743
• CPC Class Codes: C02F 1/46104 Devices therefor; Their operating or servicing
• CPC Class Codes: C02F 1/4672 by electrooxydation
• CPC Class Codes: C02F 1/727 using pure oxygen or oxygen rich gas
• CPC Class Codes: C02F 2001/46133 characterised by the material
• CPC Class Codes: C02F 2001/46152 characterised by the shape or form electrodes in particulate form or with conductive or non-conductive particles between them C02F1/46114
• CPC Class Codes: C02F 2201/46185 Recycling the cathodic or anodic feed
• CPC Class Codes: C02F 2209/22 O2

Abstract

A method and apparatus for increasing the oxygen content of water have been shown and described. A volume of water is passed between the electrodes of an electrolytic cell, a portion of the volume of water converting to dissolved oxygen. A desired level of dissolved oxygen is selected, and the number of times the volume of water must flow through the electrolytic cell to ensure that the volume of water contains the selected percentage of dissolved oxygen is also selected. The volume of water is then forced through the cell the selected number of times, such that the volume of water contains the desired percentage of dissolved oxygen. The electrolytic cell is in fluid communication with a tank and a pump, the pump drawing the volume of water from the tank and forcing it through the electrolytic cell and back into the tank. The volume of water is thereby recirculated through the electrolytic cell by the pump for the selected number of times.

Claims

1. A method for increasing the dissolved oxygen content of a volume of water to a selected level comprising:

selecting a number of times for the volume of water to flow between electrodes of an electrolytic cell, wherein the selected number of times is greater than two (2), the number of times being selected to obtain a desired amount of dissolved oxygen within the water; and

forcing the volume of water to flow between the electrodes the selected number of times to obtain the desired amount of dissolved oxygen.

2. The method according to claim 1, further comprising:

forcing the entire volume of water to flow between the electrodes at a selected rate for a selected period of time such that the entire volume of water flows between the electrodes the selected number of times.

3. The method according to claim 1, further comprising:

testing the volume of water to determine the number of times the volume of water must flow between electrodes of an electrolytic cell to reach a desired percentage of dissolved oxygen in an efficient manner.

10. The method according to any one of claims 1, 2, 4, 7 and 8, wherein the selected number of passes is greater than four (4) and less than twenty-four (24).

11. The method according to any one of claims 1, 2, 4, 7, or 8, wherein the selected number of passes is greater than nineteen (19).

12. The method according to any one of claims 1, 2, 4, 7 or 8, wherein the selected number of passes is greater than fourteen (14) and less than twenty-four (24).

13. The method according to any one of claims 1 and 4, wherein the selected number of passes is less than twenty-four (24).

4. A method for increasing the dissolved oxygen content of a volume of water using an electrolytic cell comprising:

selecting in advance a time period for the water to pass through the electrolytic cells, prior to starting the flow of the water through the electrolytic cell;

setting a timer to the selected time period;

providing a current through an electrolytic cell having a plurality of electrodes for the selected time period, each electrode having a selected length and width;

forcing the volume of water to flow through the electrolytic cell at a selected flow rate; and

passing the entire volume of water through the cell to achieve a number of passes, the number of passes being greater than two (2), such that the entire volume of water reaches the increased dissolved oxygen content after the selected time period.

5. The method according to claim 4 wherein the current is 1-30 amperes, the length is 6-12 inches, the width is 1.5-2 inches, the dissolved oxygen content is 13-17 parts per million and the selected number of times is 15-55.

6. The method according to claim 4, further comprising:

forcing the entire volume of water to flow between the electrodes at a selected rate for a selected period of time such that the entire volume of water flows between the electrodes the selected number of times.

7. A method for increasing the dissolved oxygen content of a volume of water comprising:

drawing a volume of water from a tank;

pumping the volume of water through an electrolytic cell and back into the tank a selected number of times, the number of times being selected based on a desired percentage change in dissolved oxygen and also based on an efficient energy use for creating the dissolved oxygen; and

discharging the volume of water from the tank after it has passed through the electrolytic cell the selected number of times.

8. A method for increasing the dissolved oxygen content of a volume of water comprising:

placing a volume of water in a tank;

setting a timer for the selected time period;

pumping the volume of water through an electrolytic cell for a time period which has been selected in advance and set in the timer at a selected volumetric flow rate so that the entire volume of water makes a plurality of passes through the electrolytic cell during the selected time period; and

discharging the water from the tank after the selected time period.

9. The method according to claim 8, wherein the selected number of passes is greater than fourteen (14).