Method and apparatus for treating waste water

Details Method and apparatus for treating waste water Method and apparatus for treating waste water

C - Chemistry, Metallurgy

02

F

C02F 3/20 (2006.01) C02F 3/12 (2006.01) C02F 3/28 (2006.01)

Patent

CA 2216958

Apparatus and method for circulating, treating and separating a mixture of wastewater and solids. The apparatus includes a tank housing (40), an inverted funnel-like element (16) for constricting upward flow of a gasborne mixture, and a containment element (12) between the funnel and an effluent weir (44). For aerobic treatment, a diffuser (20) is arranged within the funnel to supply air and create the upward flow. For anaerobic treatment, the tank is atop a digestor containing a sludge blanket and anaerobic bacteria producing biogas.

L'invention concerne un appareil et un procédé pour assurer la circulation, le traitement et la séparation d'un mélange d'eaux usées et de solides. L'appareil comporte une cuve (40), un élément de type entonnoir inversé (16) pour restreindre l'écoulement vers le haut d'un mélange véhiculé par un gaz, et un élément de retenue (12) entre l'entonnoir et le déversoir de l'effluent (44). Pour le traitement aérobie, un diffuseur (20) est placé dans l'entonnoir et assure l'alimentation en air et un écoulement vers le haut. Pour le traitement anaérobie, la cuve se situe au-dessus d'un digesteur contenant une couche de boue et des bactéries anaérobies produisant des biogaz.

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