Floatation separation apparatus
AssigneeKurita Water Industries Ltd.
InventorKoichi Oki
Life of this patent
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Abstract
A floatation separation apparatus includes a stirring tank, a stirring pump installed in the stirring tank, a floatation tank into which flocculated water flows from the stirring tank through an overflow dam, a scraping device (scraper) configured to scrape floating substances in the floatation tank, a treated water tank into which treated water in the floatation tank flows, and a pump and a hose for returning the treated water in the treated water tank to a raw water tank. The stirring pump sucks air and water inside the stirring tank, and discharges water mixed with air bubbles to a lower part of the stirring tank. The height of the overflow dam is adjustable.
Claims8
A floatation separation apparatus comprising:
- a stirring tank into which raw water and a flocculant are introduced;
- a pump provided in the stirring tank and configured to suck air and the raw water to which the flocculant is added through a suction port and discharge the air and the flocculant to a lower part inside the stirring tank;
- a floatation tank into which flocculated water in the stirring tank flows over an overflow dam;
- and
- a scraping device configured to scrape floating substances in the floatation tank,
- wherein at least one of the overflow dam and the pump is movable upward and downward so that a distance between the suction port and a water surface in the stirring tank is adjustable.
Dependencies are inferred from the claim text.