Bypass flow and ozone proportion method and system

• US 7,416,660 B2
• Filed: 09/15/2005
• Issued: 08/26/2008
• Est. Priority Date: 04/17/2002
• Status: Active Grant

• Current Assignee: Nutech O3 Incorporated
• Original Assignee: Nutech O3 Incorporated
• Inventors: Mueller, Richard A., van Leeuwen, Johannes, Robinson, Jack H., Jennings, Michael D.
• Primary Examiner(s): LAWRENCE JR, FRANK M
• Application Number:
  US11/226,358
• Publication Number:
  US 20060243672A1
• Time in Patent Office: 1,076 Days
• Field of Search: 210/760, 210/764, 210/192, 210/199, 210/205, 210/242.1, 210/931, 422/28, 422/186.07, 114/74.R, 114/125
• US Class Current: 210/192
• CPC Class Codes: C02F 1/008 Control or steering systems not provided for elsewhere in subclass C02F
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2103/008 Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
• CPC Class Codes: C02F 2301/043 Treatment of partial or bypass streams
• CPC Class Codes: Y10S 210/931 Zebra mussel mitigation or treatment

Abstract

A method and system of ozone treatment diverts a portion of water from a flow of water in a conduit; injects an ozone-containing gas into the portion to provide an ozonated portion; recombines the ozonated portion with the flow of water in the conduit; and regulates the diverted portion to provide a minimum diverted portion flow rate according to flow in the conduit and proportion of ozone in the injected gas.

Claims

1. A water treatment system comprising:

a water conduit that transports water from a first intake location to a discharge location;

a bypass line from a first point of the water conduit to a second, return point wherein the bypass line diverts a portion of the water from the conduit for circulation in the bypass line and back to the water conduit at a return point;

an injector included in the bypass line to inject ozone into the diverted portion of water;

an ozone generator that generates ozone for injection by the injector; and

a regulator that regulates the diverted portion to provide a minimum diverted portion flow rate according to flow in the conduit and proportion of ozone in the injected gas.

2. The system of claim 1, wherein the regulator regulates the diverted portion to at least 0.25% of the main conduit flow for every mg/L of ozone injected into the bypass.

3. The system of claim 1, wherein the regulator regulates the diverted portion to at least 0.3% of the main conduit flow for every mg/L of ozone injected into the bypass.

4. The system of claim 1, wherein the regulator regulates the diverted portion is to at least 0.35% of the main conduit flow for every mg/L of ozone injected into the bypass.

5. The system of claim 1, further comprising a static mixer located within the bypass conduit downstream to the injector.

6. The system of claim 1, comprising a mixer located within the bypass conduit downstream to the injector;

and

a reinjector to reinject the diverted portion with ozone back to the water conduit at the return point.

7. The system of claim 1, comprising a plurality of injectors to inject ozone into a respective plurality of diverted water portions of streams prior to charging each portion into a respective ballast tank of a plurality of ballast tanks.