Importance

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Abstract

The efficiency of liquid light irradiation treatments is improved by making it possible to perform continuous liquid light irradiation treatments without lowering the purity of the treated liquid and without any need for interrupting the light irradiation treatment or disassembling the device. This is accomplished by stripping away contaminants adhering to all of the light-transmitting tubes of light irradiating modules (which make up the light irradiating device) during the light irradiation treatment of the liquid in question. The present invention provides a light irradiating device in which ?a! light irradiating modules in which a plurality of light-transmitting tubes containing light irradiating lamps are attached to a frame are mounted inside a housing as detachable integral units so that flow paths for the light irradiation treatment of a fluid are formed, ?b! a moving body is attached to a moving means which is installed inside the upper portion of the aforementioned housing, ?c! supporting bodies for cleaning parts are detachably connected to the aforementioned moving body, and these supporting bodies are positioned in close proximity to the outside surfaces of the aforementioned light-transmitting tubes, and ?d! cleaning parts which slide along the outside surfaces of the aforementioned light-transmitting tubes are detachably mounted on the aforementioned supporting bodies so that contaminants adhering to the aforementioned light-transmitting tubes are stripped away in the presence of the liquid during the light irradiation treatment of said liquid.

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First Claim