C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/24 (2006.01) B01D 21/00 (2006.01) B03D 1/24 (2006.01) C02F 1/20 (2006.01)
Patent
CA 2239468
Flotation apparatus (1) for the purification of polluted water, comprising a flotation vessel (3) having an inlet means (23) for supplying polluted water to said vessel, an assembly (41) of spaced elements (43, 65) defining passages for the flow of water through said elements, and outlet means for surface sludge (15, 17) and outlet means (39, 45; 57, 61) for treated water, further comprising flow directing means for forcing the incoming polluted water to reach a level above said assembly (41) and to flow downwardly through said assembly and towards said treated water outlet means (39, 45; 57, 61); and a process for the purification of polluted water by flotation performed in such apparatus.
La présente invention concerne un appareil de flottation (1) pour la purification des eaux polluées. Cet appareil est constitué d'un bac de flottation (3) équipé d'un dispositif d'admission (23) alimentant ledit bac en eau polluée, d'un ensemble (41) d'éléments espacés (43, 45) définissant des passages de circulation de l'eau parmi ces éléments, et de dispositifs d'évacuation de la boue de surface (15, 17) et de l'eau traitée (39, 45; 57, 61). L'appareil comporte en outre un dispositif de direction du flux amenant de force l'eau polluée d'entrée à un niveau supérieur audit ensemble (41) et la laissant redescendre parmi les éléments dudit ensemble (41) vers les dispositifs d'évacuation (39, 45; 57, 61) de l'eau traitée. L'invention concerne également un procédé de purification des eaux polluées par flottation dans un tel appareil.
Dahlquist Jan
Hedberg Torsten
Dahlquist Jan
Hedberg Torsten
Purac Ab
Sim & Mcburney
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