Method and apparatus for removing granular material from an aera

Liquid purification or separation – Processes – Separating

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Details

210806, 210241, 210314, 2104161, 210525, B01D 2102, B01D 3604

Patent

active

047072776

ABSTRACT:
An apparatus is disclosed for removing granular material from an aeration basin of a sewage plant. The apparatus includes a collector for collecting the granular material from the aeration basin. A first pump includes an input and an output port with the input port being in fluid tight communication with the collector for pumping and removing the granular material out of the aeration basin together with a portion of the sewage and waste water contained within the basin. A float is disposed on the surface of the sewage within the aeration basin, the float adjustably supporting the collector relative to the granular material to be removed. A buoyant conduit is connected to the output port of the first pump such that the buoyant conduit conducts the removed granular material, sewage, waste water and bio-mass from the float away from the aeration basin. A mobile reservoir includes an inlet and an outlet, the inlet being connected to the buoyant conduit such that the granular material, sewage and waste water removed from the aeration basin flows into the reservoir and the granular material settles towards the outlet. A separator having a first and a second opening is disposed with the first opening adjacent to and in fluid communication with the outlet of the reservoir. The separator extends angularly relative to the reservoir such that as the waste water and entrained granular material are conveyed away from the first opening of the separator towards the second opening, the waste water and bio-mass drains back towards the first opening and the granular material is separated from the waste water and is conveyed towards the second opening of the separator for discharge therefrom.

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