The present invention relates to a water supply device Swine, photocatalytic purifier ozone is provided in the interior of the water tank, The photocatalytic purifier includes a metal tube ozone inlet port is provided in the peripheral wall portion and the outlet end to the other end portion having, as the translucent tube is coupled to the inside, the water permeability of the photocatalyst in the photocatalyst material are combined in the form attached to a support surrounding the light transmitting gwanreul and the photocatalyst is an integer member, and the ozone lamp electrical terminal coupled to the interior of the light transmitting tube being connected to the control unit is provided in the end portion, the packing A, B consists of a fixed to the open end of the metal tube and the transparent tube, the water supply line the ejector connected to the inlet side toward the discharge end of the circulation pump, as well as the inlet of the metal conduit is connected to the inlet end of the feed pipe, the ozone discharge port provided in the seal B is connected to the ejector, the water tank water is introduced into the circulation is configured to be constant by the constant action of a photocatalyst as the inlet and the UV and ozone in the ozone inside the photocatalytic purifier. The present invention is supplied by circulating while the water in the water tank to the respective pens of Swine constant action of water which is introduced into the circulation by the photocatalyst of the photocatalyst with UV ozone for water purifier tank, and water to a constant integer action by the ozone to remove bacteria and organic contaminants contained in, because it was so clean, purified water, water supply and healthy growth of piglets, there are advantages and benefits of preventing pollution emissions.
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