Medium treatment using ultraviolet light

Patent metadata

Field	Value
Publication number	US-8980178-B2
Application number	US-78372010-A
Country	US
Kind code	B2
Filing date	May 20, 2010
Priority date	May 23, 2009
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

A system for treating a medium, such as water, with ultraviolet light is provided. The system can include an ultraviolet treatment chamber that is shaped to reduce reflections of the ultraviolet light within the ultraviolet treatment chamber and/or improve absorption of the ultraviolet light by the medium. Furthermore, the system can add an agent to the medium within the treatment chamber to further treat one or more contaminants that may be present within the medium. Still further, additional treatment, such as filtering the medium with a permeable material can be implemented within the treatment system.

First claim

What is claimed is:

1. A system for treating a medium, the system comprising:
a first ultraviolet source; and
a shaped treatment chamber, wherein the shaped treatment chamber defines an interior comprising:
a first portion from which ultraviolet light emitted by the first ultraviolet source enters the shaped treatment chamber; and
a second portion fluidly attached to the first portion, wherein an area of a cross-section of the second portion substantially parallel to the first portion increases with distance from the first portion such that the second portion approximately conforms to at least one of: an unobstructed space emission pattern of the first ultraviolet source or a flow absorption distance dependence from the first ultraviolet source of the medium.

2. The system of claim 1 , further comprising an inlet adjacent to the first portion, wherein the medium enters the shaped treatment chamber through the inlet and flows through the second portion away from the first portion.

3. The system of claim 1 , further comprising an outlet adjacent to the first portion, wherein the medium flows through the second portion towards the first portion and exits the shaped treatment chamber through the outlet.

4. The system of claim 1 , wherein the shaped treatment chamber further includes:
a second ultraviolet source;
a third portion, distinct from the first portion, from which ultraviolet light emitted by the second ultraviolet source enters the shaped treatment chamber; and
a fourth portion fluidly attached to the third portion and the second portion, wherein an area of a cross-section of the fourth portion increases with distance from the third portion to approximately conform to at least one of: a space emission pattern of the second ultraviolet source or a flow absorption distance dependence from the second ultraviolet source.

5. The system of claim 4 , further comprising:
an inlet adjacent to the first portion, wherein the medium enters the shaped treatment chamber through the inlet and flows through the second portion away from the first portion; and
an outlet adjacent to the third portion, wherein the medium flows through the fourth portion towards the third portion and exits the shaped treatment chamber through the outlet.

6. The system of claim 1 , wherein at least a portion of an interior of walls forming the shaped treatment chamber is coated with an agent, wherein the agent suppresses growth of a possible contaminant of the medium within the treatment chamber.

7. The system of claim 1 , further comprising:
an outer treatment chamber encapsulating the shaped treatment chamber, wherein the medium first enters the outer treatment chamber and wherein at least a portion of at least one wall of the shaped treatment chamber is permeable to allow the medium to pass there through into the shaped treatment chamber; and
an outlet located within the shaped treatment chamber, wherein the medium exits the shaped treatment chamber and the outer treatment chamber via the outlet.

8. The system of claim 1 , wherein an interior of walls forming the shaped treatment chamber comprise a directional reflectivity that varies based on a distance from the first ultraviolet source.

9. The system of claim 1 , further comprising means for disturbing a flow of the medium through the shaped treatment chamber.

10. The system of claim 1 , further comprising means for adding an agent to the medium within the shaped treatment chamber, wherein the agent treats at least one contaminant in the medium.

11. The system of claim 1 , further comprising:
means for determining at least one of: a level of contamination of the medium or a type of contamination of the medium; and
means for operating at least one of: the first ultraviolet source, a flow rate of the medium through the shaped treatment chamber, or a source for adding an agent to the medium within the shaped treatment chamber based on the at least one of: the level of contamination of the medium or the type of contamination of the medium.

12. A system for treating a medium, the system comprising:
an ultraviolet treatment chamber through which the medium moves;
an ultraviolet source, wherein the ultraviolet source emits ultraviolet light into the ultraviolet treatment chamber;
an agent source, wherein the agent source introduces an agent for treating the medium within the ultraviolet treatment chamber; and
a computer system configured to implement a method of treating the medium by:
determining at least one of: a level of contamination of the medium or a type of contamination of the medium; and
operating the ultraviolet source and the agent source based on the at least one of: the level of contamination of the medium or the type of contamination of the medium to treat the medium in the ultraviolet treatment chamber by concurrently introducing the agent and emitting the ultraviolet light.

13. The system of claim 12 , wherein the determining includes:
acquiring fluorescence data corresponding to the medium; and
correlating the fluorescence data with the at least one of: the level of contamination of the medium or the type of contamination of the medium.

14. The system of claim 12 , wherein the ultraviolet treatment chamber comprises a shaped treatment chamber including:
a first portion from which ultraviolet light emitted by the ultraviolet source enters the shaped treatment chamber; and
a second portion fluidly attached to the first portion, wherein an area of a cross-section of the second portion increases with distance from the first portion to approximately conform to at least one of: a space emission pattern of the ultraviolet source or a flow absorption distance dependence from the ultraviolet source.

15. The system of claim 12 , further comprising:
an outer treatment chamber encapsulating the ultraviolet treatment chamber, wherein the medium first enters the outer treatment chamber and wherein at least a portion of at least one wall of the ultraviolet treatment chamber is permeable to allow the medium to pass there through into the ultraviolet treatment chamber; and
an outlet located within the ultraviolet treatment chamber, wherein the medium exits the ultraviolet treatment chamber and the outer treatment chamber via the outlet.

16. The system of claim 12 , wherein at least a portion of the ultraviolet light emitted by the ultraviolet source activates the agent.

17. A system for treating a medium, the system comprising:
an ultraviolet treatment chamber;
an ultraviolet source, wherein the ultraviolet source emits ultraviolet light into the ultraviolet treatment chamber;
an outer treatment chamber encapsulating the ultraviolet treatment chamber, wherein the medium first enters the outer treatment chamber and wherein at least a portion of at least one wall of the ultraviolet treatment chamber is permeable to allow filtered medium to pass there through into the ultraviolet treatment chamber; and
an outlet located within the ultraviolet treatment chamber, wherein the medium exits the ultraviolet treatment chamber and the outer treatment chamber via the outlet.

18. The system of claim 17 , wherein the ultraviolet treatment chamber comprises a shaped treatment chamber including:
a first portion from which ultraviolet light emitted by the ultraviolet source enters the shaped treatment chamber; and
a second portion fluidly attached to the first portion, wherein an area of a cross-section of the second portion increases with distance from the first portion to approximately conform to at least one of:

Assignees

• Gaska Remigijus
• Shur Michael
• Sensor Electronic Tech Inc

Inventors

• Gaska Remigijus
• Shur Michael

Classifications

• C02F2209/006

  comprising a software program or a logic diagram · CPC title

• B01D46/0043

  containing fixed gas displacement elements or cores · CPC title

• B01D2273/30

  Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan · CPC title

• A61L9/20

  Ultraviolet radiation · CPC title

• C02F2301/08

  Multistage treatments, e.g. repetition of the same process step under different conditions · CPC title