Equipment decontamination system and method

• US 8,388,904 B1
• Filed: 12/22/2009
• Issued: 03/05/2013
• Est. Priority Date: 12/22/2008
• Status: Active Grant

• Current Assignee: Reactive Surfaces Limited
• Original Assignee: Reactive Surfaces Limited
• Inventors: McDaniel, C. Steven, Salazar, Mauricio
• Primary Examiner(s): Joyner, Kevin
• Application Number:
  US12/644,334
• Time in Patent Office: 1,169 Days
• Field of Search: 422/9, 422/292
• US Class Current: 422/292
• CPC Class Codes: B08B 17/025 Prevention of fouling with liquids by means of devices for containing or collecting said liquids
• CPC Class Codes: B08B 3/14 Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquidstreatment of water in general C02F
• CPC Class Codes: B60S 3/04 for exteriors of land vehicles B60S3/002, B60S3/004 take precedence; specially adapted for railway vehicles B60S3/006

Abstract

A decontamination system includes a spraying system in an enclosed chamber for application of a decontamination fluid having a liquid carrier, such as water, and an enzyme-based decontaminating chemical additive. The additive contains an organophosphorus compound-degrading enzyme. The decontamination system also includes a fluid flow control system that ensures delivery of decontamination fluid to spray nozzles. The fluid flow control system features a recirculation system that collects runoff from the chamber and transports the collected runoff to a decontamination reactor. The decontamination reactor removes contaminants from the collected runoff liquid and permits the collected runoff liquid to be reused for further decontamination, thus taking advantage of the catalytic characteristic of the enzyme.

Claims

1. A decontamination system for an object, comprising:

a supply of a decontamination fluid, the decontamination fluid comprising;

a liquid carrier; and

a decontaminating chemical additive mixed with the liquid carrier, the decontaminating chemical additive comprising an organophosphorus compound-degrading enzyme; and

a liquid applicator operatively associated to the supply of the decontamination fluid, wherein the liquid applicator applies the decontamination fluid to the object to be decontaminated;

a decontamination fluid flow control system for conveying the decontamination fluid from the supply of the decontamination fluid to the liquid applicator, wherein the decontamination fluid flow control system comprises;

a recirculation system for recovering decontamination fluid for re-use after application by the liquid applicator, wherein the recirculation system comprises;

a liquid collector that collects the decontamination fluid after application by the liquid applicator;

a fluid conduit that conveys the collected decontamination fluid from the liquid collector;

a decontamination reactor that;

receives the collected decontamination fluid, and detoxifies a contaminant in the collected decontamination fluid;

an analyzer operably associated with the detoxified decontaminated fluid to determine a level of residual contamination in the detoxified decontaminated fluid;

a waste container for decontamination fluid;

a fluid flow control device to selectively direct the detoxified decontaminated fluid to at least one of the liquid applicator and the waste container;

a fluid conduit for conveying the detoxified decontamination fluid to at least one of the liquid applicator and the waste container; and

a plurality of pumps operatively associated with one or more of the liquid collector, the fluid conduit that conveys the collected decontamination fluid from the liquid collector, the decontamination reactor, the analyzer, the fluid flow control device, and the fluid conduit for conveying the detoxified decontamination fluid, wherein the pumps provide impetus to flow decontamination fluid through the recirculation system.

2. The decontamination system for an object of claim 1, wherein the decontamination fluid flow control system comprises:

a liquid temperature controller that receives the decontamination fluid from the supply of the decontamination fluid and maintains the decontamination fluid at a temperature suitable for activity of the decontaminating chemical additive;

a fluid conduit that flows the decontamination fluid from the liquid temperature controller to the liquid applicator; and

a pump operatively associated with at least one of the fluid conduit, the liquid temperature controller, the supply of the decontamination fluid, and the liquid applicator, wherein the pump provides impetus to flow the decontamination fluid through the decontamination fluid flow control system.

3. The decontamination system for an object of claim 1, wherein the decontamination reactor comprises:

a reaction chamber;

an inlet for transmitting decontamination fluid into the reaction chamber;

a support component within the reactor chamber capable of detoxifying a contaminant in the decontamination fluid; and

an outlet for transmitting the detoxified decontamination fluid from the reaction chamber.

4. The decontamination system for an object of claim 1, wherein the recirculation system further comprises a separator for removing solids from decontamination fluid, wherein the separator is operatively associated with at least one of the liquid collector, the fluid conduit that conveys the collected decontamination fluid from the liquid collector, the decontamination reactor, the analyzer, the fluid flow control device, the fluid conduit for conveying the detoxified decontamination fluid, and one or more of the pumps.

5. The decontamination system for an object of claim 1, further comprising a liquid sprayer frame for supporting the liquid applicator in a position to allow the liquid applicator to apply the decontamination fluid onto the object to be decontaminated.

6. The decontamination system for an object of claim 5, wherein the liquid sprayer frame comprises:

at least four vertical support legs positioned to allow the object to be between at least two of the vertical support legs;

at least four connecting devices, each of which is attached to a different vertical support leg;

at least four horizontal brace members, the ends of each horizontal brace member being attached to the connecting devices to form a generally rectangular shape by the horizontal brace members;

at least one movable connecting device attached to each different vertical support leg;

at least two side rails, each end of each side rail attached to a different movable connecting device that is attached to a vertical support leg;

at least one movable connecting device attached to each different side rail;

at least one cross-member, each end of the cross member attached to a different movable connection device attached to a side rail;

a movable connecting device interconnecting the liquid applicator to at least one of the cross member and the side rail;

wherein the movement of the movable connecting device is attached to a vertical support leg, the movable connecting device is attached to a side rail, the movable connecting device interconnects the liquid applicator, or a combination thereof, positioning the liquid applicator to apply the decontamination fluid onto the object to be decontaminated.

7. The decontamination system for an object of claim 1, further comprising a chamber to at least partially enclose the object to be decontaminated.

8. The decontamination system for an object of claim 1, further comprising at least one fluid level controller.

9. The decontamination system for an object of claim 1, wherein the decontaminating chemical additive further comprises another enzyme, a coenzyme, an enzyme activator, a cellular material, an antibody, a salt, a pH buffer, an antibiological agent, a reaction detection agent, a caustic agent, or a combination thereof.

10. The decontamination system for an object of claim 1, wherein the decontamination fluid comprises a fire fighting foam.

11. A decontamination system for an object, comprising:

a supply of a decontamination fluid, the decontamination fluid comprising;

a liquid carrier; and

a decontaminating chemical additive mixed with the liquid carrier, wherein the decontaminating chemical additive comprises an enzyme, a cellular material, an antibiological peptidic agent, or a combination thereof;

a liquid applicator operatively associated to the supply of the decontamination fluid, wherein the liquid applicator applies the decontamination fluid to the object to be decontaminated;

a liquid sprayer frame for supporting the liquid applicator in a position to allow the liquid applicator to apply the decontamination fluid onto the object to be decontaminated;

a decontamination fluid flow control system for conveying the decontamination fluid from the supply of the decontamination fluid to the liquid applicator, wherein the decontamination fluid flow control system comprises;

a recirculation system for recovering decontamination fluid for re-use after application by the liquid applicator, wherein the recirculation system comprises;

a liquid collector that collects the decontamination fluid after application by the liquid applicator;

a fluid conduit that conveys the collected decontamination fluid from the liquid collector;

a decontamination reactor that;

receives the collected decontamination fluid, and detoxifies a contaminant in the collected decontamination fluid;

an analyzer operably associated with the detoxified decontaminated fluid to determine a level of residual contamination in the detoxified decontaminated fluid;

a waste container for decontamination fluid;

a fluid flow control device to selectively direct the detoxified decontaminated fluid to at least one of the liquid applicator and the waste container;

a fluid conduit for conveying the detoxified decontamination fluid to at least one of the liquid applicator and the waste container; and

a plurality of pumps operatively associated with one or more of the liquid collector, the fluid conduit that conveys the collected decontamination fluid from the liquid collector, the decontamination reactor, the analyzer, the fluid flow control device, and the fluid conduit for conveying the detoxified decontamination fluid, wherein the pumps provides impetus to flow decontamination fluid through the recirculation system; and

at least one fluid level controller.

12. The decontamination system for an object of claim 11, wherein the recirculation system further comprises a separator for removing solids from decontamination fluid, wherein the separator is operatively associated with at least one of the liquid collector, the fluid conduit that conveys the collected decontamination fluid from the liquid collector, the decontamination reactor, the analyzer, the fluid flow control device, the fluid conduit for conveying the detoxified decontamination fluid, and one or more of the pumps.

13. The decontamination system for an object of claim 11, wherein the enzyme comprises an esterase, a lipolytic enzyme, a peptidase, a lysozyme, or a combination thereof.

14. A decontamination system for an object, comprising:

a supply of a decontamination fluid, the decontamination fluid comprising;

a liquid carrier; and

a decontaminating chemical additive mixed with the liquid carrier, the decontaminating chemical additive comprising an organophosphorus compound-degrading enzyme; and

a liquid applicator operatively associated to the supply of the decontamination fluid, wherein the liquid applicator applies the decontamination fluid to the object to be decontaminated;

a liquid sprayer frame for supporting the liquid applicator in a position to allow the liquid applicator to apply the decontamination fluid onto the object to be decontaminated, wherein the liquid sprayer frame comprises;

at least four vertical support legs positioned to allow the object to be between at least two of the vertical support legs;

at least four connecting devices, each of which is attached to a different vertical support leg;

at least four horizontal brace members, the ends of each horizontal brace member being attached to the connecting devices to form a generally rectangular shape by the horizontal brace members;

at least one movable connecting device attached to each different vertical support leg;

at least two side rails, each end of each side rail attached to a different movable connecting device that is attached to a vertical support leg;

at least one movable connecting device attached to each different side rail;

at least one cross-member, each end of the cross member attached to a different movable connection device attached to a side rail;

a movable connecting device interconnecting the liquid applicator to at least one of the cross member and the side rail;

wherein the movement of the movable connecting device is attached to a vertical support leg, the movable connecting device is attached to a side rail, the movable connecting device interconnects the liquid applicator, or a combination thereof, positioning the liquid applicator to apply the decontamination fluid onto the object to be decontaminated.