Importance

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Abstract

One object of the present invention is to provide a dissolved ozone decomposing apparatus which efficiently decomposes dissolved ozone in ozone water. The dissolved ozone decomposing apparatus comprises a case 2 and a first decomposing column 30 and a second decomposing column 40 in the case. The first decomposing column 30 comprises a flow pipe 31 in communication with a supply port 21, an adjustment plate 35 fixed in the flow pipe 31, a protection pipe 32 provided in the flow pipe 31 and made of a material transparent to ultraviolet rays, and a ultraviolet lamp 33 housed in the protection pipe 32, and when ozone water flows in the flow pipe 31, it strikes the adjustment plate 35 and stays in the pipe, so that the ozone water can be irradiated by light energy from the ultraviolet lamp 33 for decomposition of dissolved ozone in the ozone water. The second decomposing column 40 comprises a sub-tank 41 in communication with the flow pipe 31 and a drain port 22, and in the second decomposing column 40, the from the flow pipe 31 is subjected to a further decomposition process on the dissolved ozone therein because a chain reaction between the active radical produced in the decomposition by ultraviolet rays and the ozone occurs.

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First Claim