FLOTATION TANK

PURPOSE:To rapidly and efficiently treat raw water by mounting a raw water supply nozzle to the lower central part of a draft tube and introducing a circulating water supply nozzle in the horizontal tangent direction of the tube in the periphery of the draft tube. CONSTITUTION:The raw water 1 contg....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MURATANI TOSHIO, KANAI TOSHIO, YUSHINA YOSHINORI, SUNAGA YOICHI, ONISHI YASUSHI, TAKAHASHI TSUTOMU
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To rapidly and efficiently treat raw water by mounting a raw water supply nozzle to the lower central part of a draft tube and introducing a circulating water supply nozzle in the horizontal tangent direction of the tube in the periphery of the draft tube. CONSTITUTION:The raw water 1 contg. suspended solids and oil-components flows in a piping through a raw water supply pump 2 and is mixed with a flocculating agent supplied from a flocculating agent tank 3 through a flocculating agent supply pump 4; thereafter, the mixture is introduced to, for example, a looped floc forming pipe 5. The raw water emitted from the looped floc forming pipe 5 is then supplied through the raw water supply nozzle 10 in the draft tube 8 existing in the flotation tank 6 into the body of the flotation tank 6. This raw water supply nozzle 10 is introduced to the lower central part of the draft tube 8 and is mounted to the lower horizontal part of the draft tube 8. In addition, the circulating water supply nozzle 23 is introduced into the horizontal tangent direction of the tube in the periphery of the draft tube 8.