US 8,709,261 B2Granted

System and method for monitoring water transmission of UV light in disinfection systems

AssigneeAtlantium Technologies Ltd.

InventorUri Levy

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Abstract

Some demonstrative embodiments of the invention include a system and a method for disinfection of a liquid including monitoring the disinfection process. The system may include a conduit to carry flowing liquid to be disinfected, wherein the conduit comprises an inlet to receive the liquid, an outlet to discharge the liquid and walls transparent to ultraviolet radiations; an illumination source located within a transparent sleeve, wherein the transparent sleeve is immersed in the flowing liquid and the illumination source is to disinfect the liquid when passing through the conduit, a first light detector located externally to the conduit to detect light emitted by the illumination source and a second light detector located externally to the conduit to detect light emitted by the illumination source.

Claims9

Dependent claims

A liquid disinfection system having built-in monitoring capabilities, the system comprising:

a conduit to carry flowing liquid to be disinfected, wherein the conduit comprises an inlet to receive the liquid, an outlet to discharge the liquid and walls transparent to ultraviolet radiation;
an illumination source located in the conduit within a light-transparent sleeve, said transparent sleeve is to be immersed in the flowing liquid, and the illumination source is to disinfect the liquid passing through the conduit;
a first light detector located externally to the conduit to detect light emitted by the illumination source;
a second light detector located externally to the conduit to detect light emitted by the illumination source;
and
a controller configured to receive in real-time a first detected signal from the first detector and a second detected signal from the second detector and to calculate on-line in real-time an ultraviolet light transmittance (UVT) value of the liquid based on the first and second detected signals, the controller further configured to calculate in real time an efficiency parameter of the illumination source based on the UVT value and one of the first and second detected signals,
wherein the length of a first light path between the illumination source and the first light detector within the liquid is smaller than the length of a second light path between the illumination source and second light detector within the liquid.

4 more elements

A method for real-time water transmission monitoring in a liquid disinfection system, the method comprising:

passing liquid through a conduit having an inlet to receive the liquid, an outlet to discharge the liquid and transparent walls;
disinfecting the liquid within the conduit by exposing the liquid to ultraviolet light emitted from an illumination source;
detecting by a first detector located externally to the conduit, in real-time, a first portion of the light emitted from the illumination source, wherein the illumination source is located within a transparent sleeve and the transparent sleeve is immersed in the liquid and the first portion of the light propagated in the liquid and exits through the walls the conduit;
detecting by a second detector located externally to the conduit, in real-time, a second portion of the light emitted from the illumination source, wherein the second portion of the light propagated in the liquid and exits through the walls the conduit;
and
calculating, on line, an ultraviolet light transmittance (UVT) value of the liquid based on a first detected value received from the first detector and a second detected value received from the second detector and an efficiency parameter of the illumination source based on the UVT value and at least one of the detected values,
wherein the length of a first light path between the first light detector and the illumination source within the liquid is smaller than the length a second light path between the second light detector and the illumination source within the liquid.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/633,042Filed 8 Dec 2009 · continuation in part
Priority: 26 Oct 2006
Published: US 2010/0084349 A18 Apr 2010
Granted: 29 Apr 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

C02F 1/325
With ultraviolet light: irradiation devices or lamp constructions
C02F 2201/3221
Lamp arrangement: lamps suspended above a water surface or pipe
C02F 2201/3225
Lamp arrangement: lamps immersed in an open channel, containing the liquid to be treated
C02F 2201/3228
Lamp arrangement: units having reflectors, e.g. coatings, baffles, plates, mirrors

Family

Application60/854,432Us provisional application · filed 26 Oct 2006
Application11/976,732Parent of this continuation-in-part · filed 26 Oct 2007
US 2010/0084349 A1Pre-grant publication · published 8 Apr 2010
US 7,628,926 B2Parent of this continuation-in-part
US 2008/0105623 A1Published application
US 8,709,261 B2This patent

From the US filing history. Foreign family members aren’t listed.