Self-contained water treatment system

• US 5,269,919 A
• Filed: 01/17/1992
• Issued: 12/14/1993
• Est. Priority Date: 01/17/1992
• Status: Expired due to Fees

• Current Assignee: Von Medlin; Wallace
• Original Assignee: Von Medlin; Wallace
• Inventors: von Medlin, Wallace
• Primary Examiner(s): Lithgow, Thomas M.
• Application Number:
  US07/822,360
• Time in Patent Office: 697 Days
• Field of Search: 210/266, 210/282, 210/284, 210/202, 210/259, 210/295, 210/260, 210/261, 210/262, 210/501, 210/688, 210/638, 210/683, 210/502.1, 210/500.1, 210/291, 210/319, 210/912 , 210/914, 210/757, 210/663, 210/669, 210/315, 210/288, 210/285, 210/256
• US Class Current: 210/256
• CPC Class Codes: B01D 2311/04 Specific process operations in the feed stream; Feed pretreatment
• CPC Class Codes: B01D 2311/12 Addition of chemical agents
• CPC Class Codes: B01D 2311/2626 Absorption or adsorption
• CPC Class Codes: B01D 61/025 Reverse osmosis; Hyperfiltration
• CPC Class Codes: B01D 61/04 Feed pretreatment
• CPC Class Codes: B01D 61/08 Apparatus therefor
• CPC Class Codes: B01D 61/081 used at home, e.g. kitchen
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/441 by reverse osmosis
• CPC Class Codes: C02F 1/50 by addition or application of a germicide or by oligodynamic treatment C02F1/4606, C02F1/467, C02F1/76 take precedence
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 1/705 Reduction by metals
• CPC Class Codes: C02F 2201/006 Cartridges
• CPC Class Codes: C02F 2303/185 The treatment agent being halogen or a halogenated compound
• 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: Y10S 210/912 Heavy metal
• CPC Class Codes: Y10S 210/914 Mercury

Abstract

A water purifying system including two or more stages for removing organic and inorganic contaminants from source water. The system may be configured such that water is first passed through a biocidal resin, and then through a granular metal alloy and an activated carbon filter to remove iodides released into the water by the biocidal resin. The granular metal alloy may be agitated by turbulent motion as the water treated.

Claims

1. An apparatus for treating water, comprising:

a housing including generally cylindrical coaxial first and second chambers separated by a partition, said first chamber having a cylindrical wall;

input means for passing source water into said first chamber, said input means including a tubular member extending coaxially into said first chamber from one end thereof, said tubular member having an upper portion and a lower portion;

said first chamber including granular metal alloy material and means for agitating said granular metal alloy material;

said agitation means including at least one angled slot located in said lower portion of said tubular member, said angled slot arranged to direct water in a generally circular path around said first chamber;

said second chamber having an annular cylindrical first subchamber surrounding a cylindrical second subchamber, said first subchamber including a filter;

means for providing a fluid connection for allowing water to pass from said first chamber into said second subchamber through said filter; and

output means for delivering water from said second subchamber.

2. The apparatus of claim 1 wherein said filter includes compacted activated carbon.

3. The apparatus of claim 1 wherein said filter is a reverse osmosis filter.

4. The apparatus of claim 3 wherein said second subchamber includes activated carbon.

5. The apparatus of claim 4 further including means for removing brine rejected by said reverse osmosis filter.

6. The apparatus of claim 5 wherein said brine removing means includes a tube extending into said second chamber through a base thereof, said tube having a predetermined bore and a predetermined length for controlling brine removal rate.

7. The apparatus of claim 1 wherein said input means includes said tubular member having said upper portion joined to the top of said first chamber.

8. The apparatus of claim 1 wherein said agitation means further includes a plurality of fin members extending between said upper portion of said tubular member and said cylindrical wall.

9. The apparatus of claim 1 wherein said housing is attached to a coupling unit, said coupling unit including means for attaching a biocidal filter stage, and said coupling unit arranged such that source water is passed through said biocidal filter stage before it is passed into said first chamber.

10. The apparatus of claim 9 further including a biocidal filter stage attached to said coupling unit.

11. The apparatus of claim 10 wherein said biocidal filter stage includes a polyiodide material.