PROBLEM TO BE SOLVED: To provide an ozone catalytic reaction apparatus of a small size, with a high reaction efficiency, and easy in maintenance.;SOLUTION: This ozone catalytic reaction apparatus is provided with an ejector 1 disposed in midway of a water pipe of water to be treated and having a mechanism of sucking ozone-containing gas 3 and injecting it into the water 2 to be treated; and a mixer 5 having elements 4 of an inorganic material carrying a metal oxide catalyst 6 disposed or filled in a pipe of a rear stage of the ejector 1. The mixer 5 is provided with an electromotive means for rotating or vibrating the elements 4. The element 4 is provided with at least one of blade-like, three dimensional mesh-like, spiral-like, ring-like, particulate or pellet-like shape.;COPYRIGHT: (C)2005,JPO&NCIPI
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