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US 4,141,830 AGranted
Ozone/ultraviolet water purifier
AssigneeOntario Research Foundation
InventorAnthony J. Last
Life of this patent
Estimating the term…
Abstract
There is provided an apparatus for purifying liquid such as water, in which an ultraviolet light source irradiates air passing through a first chamber surrounding the source, and then irradiates the liquid passing through the second chamber surrounding the first chamber. The air from the first chamber is ozonated by the U.V. light, and this air is bubbled into the water in the second chamber to maximize the purification through simultaneous ultraviolet and ozone exposure.
Claims11
Apparatus for treating a liquid, comprising:
- an ultraviolet light source,
- first means defining a first chamber surrounding said source and allowing ultraviolet light to pass through said chamber,
- second means defining a second chamber surrounding said first chamber and allowing ultraviolet light to pass through said second chamber,
- inlet and outlet means on said second chamber to allow said liquid to enter and leave said chamber, and
- third means for causing air to enter said first chamber and traverse the same while being irradiated with ultraviolet light to generate ozone, and to mix the ozonated air with the liquid in the second chamber while the latter is being irradiated with ultraviolet light.
2 more elements
A method of purifying a liquid, comprising the steps:
- passing air through a first chamber surrounding a source of ultraviolet light, to allow said light to convert some of the oxygen in the air to ozone,
- passing said liquid through a second chamber surrounding said first chamber, the second chamber also being irradiated by said source simultaneously with said first chamber, and
- passing the air from said first chamber into the liquid in the second chamber to allow mixing of the air with the liquid in the second chamber.
Dependencies are inferred from the claim text.