STERILIZATION DEVICE OF LEGIONELLA BACTERIUM

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PROBLEM TO BE SOLVED : To provide a sterilization device of Legionella bacteria which can be used jointly with a chlorine sterilization method and permits perfect sterilization of Legionella bacteria. SOLUTION : In this sterilization device of Legionella bacteria, an intake part of fluid is connected with one side of a lower part and an upper part of a tank side wall surface of a closed structure and an exhaust port of the fluid is connected with the other side, respectively, a first vessel is arranged near the intake part in a tank, a first vessel has such a structure that at least its side surface and the wall surface opposite to a second vessel later described allow the fluid to penetrate therethrough, and a plurality of ceramic balls made of a rare earth mineral containing a natural radiation element are movably incorporated in the first vessel. Further, the second vessel is arranged near the exhaust port in the tank, the second vessel has such a structure that at least the side surface and the wall surface opposite to the first vessel allow the fluid to penetrate therethrough, ceramic balls made of tourmaline mineral are incorporated in the second vessel, an ultraviolet ray lamp is arranged between the first vessel and the second vessel and a photocatalyst body is arranged around the ultraviolet ray lamp.