| 摘要 |
PURPOSE:To improve the water environment for fish or the like by efficiently removing foam generated, in a purifying apparatus using an aeration device or an oxygen supply device, by arranging a treated water send-out pipe having a specific shape in specific positional relation to a foam discharge pipe. CONSTITUTION:When a water quality purifying apparatus is arranged in a marsh, a basin or a fish farm and at least one of a stirring device 14 and an aeration device is operated and at least one of an ultraviolet sterilizing lamp 11, an ozone injection device and an oxygen supply device is operated, water is subjected to sterilization treatment and dissolved oxygen increases. At this time, a treated water send-out pipe 3 wherein the inner end part thereof having a foam separation pie 6 is bent upwardly in the apparatus and a foam discharge pipe 8 are arranged so that the upper end of the send-out pipe 3 is positioned at a height equal to or more than that of the lower end of the opening part of the foam discharge pipe 8. Therefore, the foam generated by stirring is separated by the foam separation pipe 6 to be taken out from the discharge pipe 8.
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