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US6824695: System and method for water purification

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Filing Information

Inventor(s) Gerard F. Tempest, Jr. ·
Assignee(s) None listed in document.
Primary Examiner Betsy Morrison Hoey ·
Application Number US10377241
Filing date 02/28/2003
Issue date 11/30/2004
Prior Publication Data
Predicted expiration date 03/07/2023
Patent term adjustment 7
U.S. Classifications 210/760  · 210/203  · 210/748  · 210/85  · 210/143  · 210/198.1  · 210/739  · 210/263  · 210/314  · 210/322  · 422/186.07  · 210/620  ·
International Classifications --
Kind CodeB2
International Classifications 210620 · 210739 · 210748 · 210760 · 210764 · 210767 · 210 85 · 210143 · 210192 · 2101981 · 210200 · 210203 · 210263 · 210314 · 210322 · 42218607 ·
81 Claims, 4 Drawings


Abstract

A self-contained, portable water purification system, including (a) an ozone supply, (b) an ozone contact chamber mixing a contaminated or potentially contaminated water stream with ozone generated by such ozone supply, (c) an ozone destruction unit for destructing ozone contained in the water stream and converting said water stream into an oxygen-rich and ozone-depleted water stream, and (d) a downstream biologically active carbon filter, for receiving such oxygen-rich and ozone-depleted water stream and biologically destructing at least a portion of contaminants contained therein.

Independent Claims | See all claims (81)

  1. 1. A water purification system for treatment of a water stream to remove chemical, biological, and/or radiological contaminants therefrom, comprising: (a) an ozonation unit for ozone treatment of said water stream, comprising: (i) an ozone contact chamber arranged to receive said water stream, mix said water stream with ozone, and discharge an ozonated water stream therefrom; and (ii) an ozone supply arranged for variable output of ozone and coupled in ozone-supplying relationship to said ozone contact chamber; (b) an ozone destruction unit downstream of said ozone contact chamber, for removing residual ozone from said ozonated water stream and converting said ozonated water stream into an oxygen-rich and ozone-depleted water stream; and (c) at least one activated carbon adsorbent unit arranged to receive said oxygen-rich and ozone-depleted water stream from said ozone destruction unit, contact said water stream with activated carbon adsorbent, and discharge a treated water stream.
  2. 38. A method for treating a water stream to remove chemical, biological, and/or radiological contaminants, comprising the steps of: (a) providing an ozonation unit comprising (i) an ozone contact chamber arranged to receive said water stream, mix said water stream with ozone, and discharge an ozonated water stream therefrom; and (ii) an ozone supply arranged for variable output of ozone and coupled in ozone-supplying relationship to said ozone contact chamber; (b) flowing said water stream into the ozone contact chamber, mixing said water stream with ozone therein, and discharging the ozonated water stream therefrom; (c) subsequently, passing the ozonated water stream through an ozone destruction unit to remove residual ozone contained therein and to convert said ozonated water stream into an oxygen-rich and ozone-depleted water stream; (d) subsequently, passing said oxygen-rich and ozone-depleted water stream through at least one activated carbon adsorbent unit to contact said water stream with activated carbon adsorbent; and (e) discharging a treated water stream.
  3. 40. A self-contained water purification system, comprising: (a) an ozonation unit for ozone treatment of said water stream, comprising: (i) an ozone contact chamber arranged to receive said water stream, mix said water stream with ozone, and discharge an ozonated water stream therefrom; and (ii) an ozone supply arranged for variable output of ozone and coupled in ozone-supplying relationship to said ozone contact chamber; (b) an ozone destruction unit downstream of said ozone contact chamber, for removing residual ozone from said ozonated water stream and converting said ozonated water stream into an oxygen-rich and ozone-depleted water stream, wherein said ozone destruction unit comprises at least one broad-spectrum radiation source for providing UV radiation having wavelength ranging from about 170 nm to about 300 nm; and (c) a monitoring unit arranged to continuously monitor oxidation-reduction potential of said oxygen-rich and ozone-depleted water stream and to correlatively actuate said ozone supply to produce an output of ozone for maintaining said oxidation-reduction potential of said water stream at a predetermined level.
  4. 45. A method for purifying a water stream, comprising the steps of: (a) providing an ozonation unit comprising (i) an ozone contact chamber arranged to receive said water stream, mix said water stream with ozone, and discharge an ozonated water stream therefrom; and (ii) an ozone supply arranged for variable output of ozone and coupled in ozone-supplying relationship to said ozone contact chamber; (b) flowing said water stream into the ozone contact chamber, mixing said water stream with ozone therein, and discharging the ozonated water stream therefrom; (c) subsequently, passing said ozonated water stream through an ozone destruction unit, so as to remove residual ozone contained therein and to convert said ozonated water stream into an oxygen-rich and ozone-depleted water stream, wherein said ozone destruction unit comprises at least one broad-spectrum radiation source for providing UV radiation having wavelength ranging from about 170 nm to about 300 nm; and (d) discharging the treated water stream.
  5. 46. A system for treatment of water to remove chemical, biological, and/or radiological contaminants therefrom, said system comprising a unitary sealed housing arranged for connection to an external water source and having an anti-tamper character, wherein said unitary sealed housing has disposed therein one or more water treatment units arranged to treat water from the external water source to produce a treated water stream depleted of chemical, biological, and/or radiological contaminants, and wherein said unitary sealed housing comprises an outlet for discharging said treated water stream therefrom.
  6. 49. A system for the treatment of water to remove chemical, biological and/or radiological contaminants therefrom, said system comprising: an ozonation unit for ozone treatment of said water, said ozonation unit comprising: (i) an ozone contactor arranged to receive said water, contact said water with ozone therein, and discharge ozonated water therefrom; and (ii) an ozone supply arranged for variable output of ozone and coupled in ozone-supplying relationship to said ozone contactor; an ozone destruction unit coupled with the ozone contactor to receive ozonated water discharged therefrom, said ozone destruction unit being arranged to substantially completely remove ozone from said ozonated water and to discharge ozone-depleted water; an activated carbon adsorber unit arranged to receive ozone-depleted water from the ozone destruction unit, contact the ozone-depleted water with activated carbon and discharge a treated water effluent; and a monitoring unit arranged to monitor oxidation-reduction potential of said ozone-depleted water and to correlatively actuate said ozone supply to produce an output of ozone for maintaining said oxidation-reduction potential of said ozone-depleted water at a predetermined level.

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7537702 Honeywell International Inc. Francis S. Lupton et al. May 2009
US7775374 Jack E. Barker et al. Aug 2010
US8186518 Jack E. Barker et al. May 2012
US8142550 Oxy Solutions AS Tore Audunson et al. Mar 2012
US8409334 --
US8486275 --
US8852437 --

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20040168989 Gerard Tempest Sep 2004
US6824695 Gerard F. Tempest, Jr. Nov 2004