Miniaturized handheld desalination field unit

• US 5,685,980 A
• Filed: 03/07/1996
• Issued: 11/11/1997
• Est. Priority Date: 03/07/1996
• Status: Expired due to Fees

• Current Assignee: Jim Lung Wong, Walter Patapoff
• Original Assignee: Jim Lung Wong, Walter Patapoff
• Inventors: Patapoff, Walter, Wong, Jim Lung
• Primary Examiner(s): FORTUNA, ANA M
• Application Number:
  US08/612,406
• Time in Patent Office: 614 Days
• Field of Search: 210/652, 210/257.2, 210/700, 210/900, 210/428, 210/435, 210/244, 210/259, 210/261, 210/262, 210/446, 210/195.2, 210/321.84, 210/321.6, 210/439, 210/459 , 210/416.1, 210/464, 210/258, 210/192, 210/477
• US Class Current: 210/244
• CPC Class Codes: B01D 61/08 Apparatus therefor
• CPC Class Codes: B01D 61/10 Accessories; Auxiliary operations
• CPC Class Codes: C02F 1/441 by reverse osmosis
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 9/20 Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
• CPC Class Codes: Y02A 20/131 Reverse-osmosis

Abstract

A water purification unit including a water inlet having a filter adapted to remove undissolved contaminants from a raw water source. The water inlet is coupled to a water reservoir including a semi-permeable membrane adapted to remove dissolved contaminants from raw water source. The filter and the membrane function to produce permeate water having undissolved and dissolved contaminants removed therefrom. The unit further includes a pressure source positioned within the water reservoir, wherein the pressure source forces raw water through the semi-permeable membrane. In addition, the unit is provided with a purified water container in fluid communication with the water reservoir adapted to receive the permeate water, wherein the purified water container is coupled to an oxidizing agent source. The oxidizing agent from the oxidizing agent source contacts the permeate water to destroy any contaminants that still may remain in the water.

Claims

1. A water purification unit shaped and sized to be carried by an individual, comprising:

a water inlet including a filter adapted to remove undissolved contaminants from a raw water source, the water inlet being coupled to a water reservoir which includes a semi-permeable membrane adapted to remove dissolved contaminants from the raw water source to produce permeate water having undissolved and dissolved contaminants removed therefrom;

a pressure source cooperating with the water reservoir, the pressure source forcing raw water through the semi-permeable membrane;

a purified water container in fluid communication with the water reservoir to receive the permeate water, the purified water container being coupled to an oxidizing agent source, wherein an oxidizing agent from the oxidizing agent source contacts the permeate water to destroy any contaminants that still remain in the water and provide a complete supply of potable water within the purified water container; and

wherein the purified water container is directly coupled to the water reservoir to form a complete portable water purification unit.

2. The water purification unit according to claim 1, wherein the oxidizing agent source includes means for providing ozone to the permeate water held in the purified water container.

3. The water purification unit according to claim 2, further including an electricity source coupled to an ozone generator for supplying the power necessary to produce ozone.

4. The water purification unit according to claim 1, wherein the pressure source includes a plunger head positioned within the water reservoir.

5. The water purification unit according to claim 4, wherein the pressure source further includes a plunger handle secured to the plunger head, the plunger handle extending from the water reservoir such that the plunger head can be manually actuated to force raw water through the semi-permeable membrane.

6. The water purification unit according to claim 4, wherein the pressure source includes a means for automatically forcing the plunger head downwardly to force raw water through the semi-permeable membrane.

7. The water purification unit according to claim 1, wherein the semi-permeable membrane is a reverse osmosis membrane.

8. The water purification unit according to claim 1, further including carrying means for permitting an individual to carrying the water purification unit.

9. The water purification unit according to claim 1, wherein the filter is removable and backwashable.

10. The water purification unit according to claim 1, wherein the filter is a backwash filter.

11. A water purification unit shaped and sized to be carried by an individual, comprising:

means for filtering undissolved contaminants from a raw water source and passing the filtered water to a water reservoir, wherein the water reservoir includes means for filtering dissolved contaminants from the water to create permeate water;

a purified water container in fluid communication with the water reservoir to receive the permeate water, the purified water container including means for oxidizing the permeate water to remove any contaminants that still may remain in the water and provide a complete supply of potable water within the purified water container; and

wherein the purified water container is directly coupled to the water reservoir to form a complete portable water purification unit.

12. The water purification unit according to claim 11, wherein the means for filter dissolved contaminants includes a semi-permeable membrane positioned within the water reservoir and a pressure source forcing raw water through the semipermeable membrane.

13. The water purification unit according to claim 12, wherein the semi-permeable membrane is a reverse osmosis membrane.

14. The water purification unit according to claim 11, wherein the means for oxidizing includes an ozone generator in fluid communication with the purified water container.

15. The water purification unit according to claim 14, further including an electricity source coupled to the ozone generator for supplying the power necessary to produce ozone.

16. The water purification unit according to claim 14, wherein a sparger is positioned within the purified water container to diffuse ozone within the permeate water.

17. The water purification unit according to claim 11, further including carrying means for permitting an individual to carrying the water purification unit.

18. A water purification unit, comprising:

means for filtering undissolved contaminants from a raw water source and passing the filtered water to a water reservoir, wherein the water reservoir includes means for filtering dissolved contaminants from the water to create permeate water and the means for filtering undissolved contaminants includes a filter positioned within a water inlet coupled to the water reservoir;

a purified water container in fluid communication with the water reservoir to receive the permeate water, the purified water container including means for oxidizing the permeate water to remove any contaminants that still may remain in the water and provide a complete supply of potable water within the purified water container; and

wherein the purified water container is directly coupled to the water reservoir to form a complete portable water purification unit.