OPENING AND CLOSING TYPE WATER GATHERING APPARATUS AND SUPERNATANT LIQUID DISCHARGE DEVICE

PURPOSE:To provide a supernatant liquid discharge device and an opening and closing type water gathering apparatus, positioned above the surface of a liquid in an aeration process unnecessary to scatter water to the surface of a liquid for the purpose of removing the floated matter on the surface of...

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Hauptverfasser: ISONO AKIRA, MATSUMURA NAONOBU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To provide a supernatant liquid discharge device and an opening and closing type water gathering apparatus, positioned above the surface of a liquid in an aeration process unnecessary to scatter water to the surface of a liquid for the purpose of removing the floated matter on the surface of a liquid even when allowed to fall to the surface of a liquid before the start of a water gathering and discharge process, and capable of certainly preventing the discharge of the floated matter to the outside of the system. CONSTITUTION:An opening and closing type water gathering apparatus 10 consists of a water gathering vessel 20 and the drain means 30 arranged in the water gathering vessel and the water gathering vessel 20 has bottom surfaces 21D, 22D protruding downwardly in a wedge shape or a bottom surface curved downwardly and an openable and closable supernatant liquid inflow part 23 is provided to the almost lowermost part of the bottom surfaces.