Dispositif pour la purification continue de liquides

Vorrichtung zur kontinuierlichen Reinigung von Flüssigkeiten

Apparatus for continuous purification of liquids

Abstract

The apparatus for the continuous clarifying of liquids containing suspended solid substances comprises a flotation cell (1) with a liquid head height of less than 1 meter, with a ratio between the liquid head and the cell diameter comprised between 0.25 and 0.05. The cell (1) has a bottom axial inlet (2) for liquid to be clarified, supersaturated with gas, so as to generate an axial ascending current of the liquid to be clarified with radial divarication toward the surface of the liquid head. A framework (20) associated with the cell (1) rotates concentrically with respect thereto and supports a spillway unit (30-32) for collecting the flotated layer and a scraper unit (50-53) which affects all the wet surfaces of the cell (1). A discharge outlet (60) is furthermore provided in the lower part of the cell (1) for the outflow of clarified liquid which falls toward the bottom of the cell (1).

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    FR-2268757-A1November 21, 1975Adka MaticClarification of polluted water - by settling in circular pond with central pump for solids removal
    US-4022696-AMay 10, 1977Milos KroftaApparatus for clarification of waste water operating on dissolved air flotation process
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Cited By (10)

    Publication numberPublication dateAssigneeTitle
    DE-19902148-A1August 10, 2000Meri Entsorgungstech PapierindTangentiale Feststoffabtrenn-Vorrichtung
    DE-19902148-C2March 29, 2001Meri Entsorgungstech PapierindTangentiale Feststoffabtrenn-Vorrichtung
    DE-4406239-C1June 14, 1995Lucas Dipl Ing MenkeVorrichtung und Verfahren zur Trennung von Substanzen aus einem Fluid mittels Druckentspannungsflotation
    EP-0621076-A1October 26, 1994Voith Sulzer Stoffaufbereitung GmbHMethod for the separation of solids
    EP-0682985-A1November 22, 1995Fabio Perletti, O.M.C. Officina Meccanica Collareda S.R.L.Apparatus for the high-level clarification of liquids containing suspended solid particles
    FR-2719507-A1November 10, 1995Cadalpe SpaClarification of wine must or fruit juice by froth flotation
    US-5520806-AMay 28, 1996Menke; LucasApparatus for gas bubble flotation
    US-5525238-AJune 11, 1996Menke; LucasApparatus and process for separating substances
    WO-9523027-A1August 31, 1995Lucas MenkePressure-release flotation
    WO-9523647-A1September 08, 1995Lucas MenkeRectangular flotation plant