US 9,802,840 B2Granted

Ultraviolet water disinfection system

AssigneeSensor Electronic Technology, Inc.

InventorsIgor Shturm, Saulius Smetona, Timothy James Bettles, Yuri Bilenko, Ignas Gaska, Alexander Dobrinsky, Michael Shur, Remigijus Gaska

Life of this patent

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Abstract

A solution for treating a fluid, such as water, is provided. An ultraviolet transparency of a fluid can be determined before or as the fluid enters a disinfection chamber. In the disinfection chamber, the fluid can be irradiated by ultraviolet radiation to harm microorganisms that may be present in the fluid. One or more attributes of the disinfection chamber, fluid flow, and/or ultraviolet radiation can be adjusted based on the transparency to provide more efficient irradiation and/or higher disinfection rates. In addition, various attributes of the disinfection chamber, such as the position of the inlet(s) and outlet(s), the shape of the disinfection chamber, and other attributes of the disinfection chamber can be utilized to create a turbulent flow of the fluid within the disinfection chamber to promote mixing and improve uniform ultraviolet exposure.

Claims20

Dependent claims

A system comprising:

a disinfection chamber for disinfecting a fluid, the disinfection chamber comprising:
an inner cylindrical chamber;
at least one inlet located at a first end of the disinfection chamber and at least one outlet located at a second end of the disinfection chamber, wherein the at least one inlet and the at least one outlet are positioned to provide a rotational force to the fluid within the inner cylindrical chamber;
a set of ultraviolet radiation sources configured to emit ultraviolet radiation directed within the inner cylindrical chamber;
and
an outer chamber surrounding the inner cylindrical chamber, wherein the outer chamber includes an ultraviolet diffusive reflective material and the inner cylindrical chamber includes an ultraviolet transparent material, and wherein the inner cylindrical chamber and the outer chamber are separated by a low index of refraction layer;
a filtering system located at the at least one inlet of the disinfection chamber configured to filter the fluid;
a sensing component located between the filtering system and the at least one inlet configured to evaluate a transparency of the fluid prior to entering the disinfection chamber;
and
a control component configured to control at least one of:
the set of ultraviolet radiation sources or a flow rate of the fluid at the at least one inlet, based on the transparency of the fluid.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/324,528Filed 7 Jul 2014 · us provisional application
Priority: 8 Jul 2013
Published: US 2015/0008167 A18 Jan 2015
Granted: 31 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

C02F 1/325
With ultraviolet light: irradiation devices or lamp constructions
C02F 1/001
Treatment of water, waste water, or sewage: processes for the treatment of water whereby the filtration technique is of importance
G01N 21/33
Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry:…
G01N 21/85
Systems specially adapted for particular applications: investigating moving fluids or granular solids