Method and apparatus for purifying water

• US 7,540,966 B2
• Filed: 12/10/2007
• Issued: 06/02/2009
• Est. Priority Date: 04/16/2003
• Status: Expired due to Term

• Current Assignee: Zodiac Pool Systems Incorporated (Fluidra, S.A.)
• Original Assignee: Zodiac Pool Care Incorporated (Fluidra, S.A.)
• Inventors: Parent, Thomas, Costa, Alvin, Coffey, Richard T., Pereira, Michael, Nelsen, Daniel, Kampf, Christopher
• Primary Examiner(s): Hruskoci; Peter A
• Application Number:
  US11/953,371
• Publication Number:
  US 20080128363A1
• Time in Patent Office: 540 Days
• Field of Search: 210/752
• US Class Current: 210/752
• CPC Class Codes: B01F 21/22 using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 1/688 Devices in which the water progressively dissolves a solid compound
• CPC Class Codes: C02F 1/76 with halogens or compounds of halogens C02F1/4674 takes precedence
• CPC Class Codes: C02F 2103/42 from bathing facilities, e.g. swimming pools
• CPC Class Codes: C02F 2209/44 Time
• CPC Class Codes: C02F 9/00 Multistage treatment of water, waste water or sewage

Abstract

The invention relates to a method for purifying water by dissolving one or more soluble metal salts in the water to provide corresponding metal ions, by dissolving hypohalite into the water, and by regulating the residence time, and thus hypohalite concentration in the device using a venturi nozzle disposed between the metal generator and the hypohalite generator.

Claims

1. An apparatus for purifying water, comprising:

an inlet and an outlet;

a metal generator, having an inlet in fluid communication with the inlet of the device, and

a first outlet and a second outlet, and adapted to provide concentrations of a metal to the water;

a halogen generator, having an inlet in fluid communication with the first outlet of the metal generator, and having an outlet, and adapted to provide concentrations of halogen to the water, wherein the halogen in the water is selected from the group consisting of bromide, iodide, hypobromite, and mixtures thereof;

a venturi nozzle, having an inlet in fluid communication with the second outlet of the metal generator, which is in fluid communication with the outlet of the halogen generator, and having an outlet in fluid communication with the outlet of the device.

2. The apparatus of claim 1, wherein the halogen comprises bromide.

3. The apparatus of claim 1, wherein the metal comprises one or more metal ions selected from the group consisting of silver ions, copper ions, zinc ions, and mixtures thereof.

4. The apparatus of claim 1, wherein the metal comprises silver ions and zinc ions.

5. A water purifying system, comprising:

(a) an inlet for entry of water into the system;

(b) a metal-generating media adapted to contact at least a portion of the water in the system and provide concentrations of a metal to the water;

(c) a halogen-generating media adapted to contact at least a portion of the water in the system and provide concentrations of one or more halogens to at least a portion of the water, wherein the metal-generating media and the halogen-generating media are in fluid communication with one another, wherein the halogen is selected from the group consisting of bromide, iodide, hypobromite, and mixtures thereof;

(d) a flow path between (b) and (c) that is adapted to;

(1) carry at least a portion of the water in the system;

(2) create a pressure drop; and

(3) draw water from the halogen-generating media into the flow path; and

(e) an exit outlet in fluid communication with the flow path, the exit outlet adapted to allow water to exit the water purifying system, whereby at least a portion of the water exiting the system is purified.

6. The system of claim 5, wherein the halogen comprises bromide.

7. The system of claim 5, wherein the metal comprises one or more metal ions selected from the group consisting of silver ions, copper ions, zinc ions, and mixtures thereof.

8. The system of claim 5, wherein the metal comprises silver ions and zinc ions.

9. A method for purifying water comprising the steps of:

(a) providing a water purifying system comprising;

(1) an inlet for entry of water;

(2) a metal-generating media adapted to contact at least a portion of the water in a system and provide concentrations of a metal to the water; and

(3) a halogen-generating media adapted to contact at least a portion of the water in the system and provide concentrations of one or more halogens to at least a portion of the water, wherein the metal-generating media and the halogen-generating media are in fluid communication with one another, wherein the halogen is selected from the group consisting of bromide, iodide, hypobromite, and mixtures thereof;

(b) providing a flow path between (2) and (3);

(c) carrying at least a portion of water through the system via the flow path;

(d) creating a pressure drop; and

(e) drawing water from the halogen-generating media into the flow path, wherein an exit outlet is in fluid communication with the flow path, the exit outlet adapted to allow water to exit the water purifying system, whereby at least a portion of the water exiting the system is purified.

10. The method of claim 9, wherein the halogen comprises bromide.

11. The method of claim 9, wherein the metal comprises one or more metal ions selected from the group consisting of silver ions, copper ions, zinc ions, and mixtures thereof.

12. The method of claim 9, wherein the metal comprises silver ions and zinc ions.

13. A method for purifying water in a system adapted to receive water comprising the steps of:

providing water to the system;

providing a metal generator in communication with the water;

directing at least a portion of the water into a metal generator;

providing a halogen generator in communication with the water and the metal generator, wherein the halogen is selected from the group consisting of bromide, iodide, hypobromite, and mixtures thereof;

directing at least a portion of the water into a halogen generator;

directing at least a portion of the water into a flow path adapted to create a pressure drop to move water from the metal generator or halogen generator into the flow path; and

directing at least a portion of the water out of the system.

14. The method of claim 13, wherein the halogen comprises bromide.

15. The apparatus of claim 13, wherein the metal comprises one or more metal ions selected from the group consisting of silver ions, copper ions, zinc ions, and mixtures thereof.

16. The apparatus of claim 13, wherein the metal comprises silver ions and zinc ions.

17. An apparatus for purifying water, comprising:

an inlet and a outlet for the apparatus;

a metal generating chamber comprising a metal generating chamber inlet in fluid communication with the apparatus inlet, and a first metal generating chamber outlet and a second metal generating chamber outlet, said metal generating chamber adapted to provide concentrations of a metal to water to be purified;

a halogen generating chamber comprising a halogen generating chamber inlet in communication with the first outlet of the metal generating chamber, said halogen generating chamber further comprising a halogen generating chamber outlet, said halogen generating chamber adapted to provide concentrations of halogen to the water to be purified;

a venturi nozzle comprising an inlet in fluid communication with the second outlet of the metal generating chamber, said metal generating chamber in fluid communication with the outlet of the halogen generating chamber, said venturi nozzle in fluid communication with the apparatus outlet;

a housing surrounding the metal generating chamber and the halogen generating chamber;

a port in the housing adjacent to the metal generating chamber and

a port in the housing adjacent to the halogen generating chamber.

18. The apparatus of claim 17, wherein the housing comprises chlorine resistant material.

19. The apparatus of claim 18, wherein the housing material comprises Acrylonitrile-Butadiene-Styrene plastic resin.

20. The apparatus of claim 17, wherein the halogen generating chamber comprises a chamber shaped to accept commercially available hypochiorite salt tablets.

21. The apparatus of claim 17, wherein the halogen generating chamber comprises a chamber shaped to accept proprietary hypochiorite salt tablets to ensure proper hypochiorite dispensing level.

22. The apparatus of claim 17, wherein the metal generating chamber port comprises a threaded port coupled to a cover in a watertight union comprising a mechanical locking ring, a jacking ring, an o-ring, and a mechanical stop.

23. The apparatus of claim 17, wherein the halogen generating chamber port comprises a threaded port coupled to a cover in a watertight union comprising a mechanical locking ring, a jacking ring, an o-ring, and a mechanical stop.

24. The apparatus of claim 17, wherein the housing comprises a top portion coupled to a bottom portion in a watertight union comprising a mechanical locking ring, a jacking ring, and an o-ring.