Upright tubular filter unit and method of separation using the filter unit
AssigneeWater Research Commission
InventorsMartin John Pryor, Kevin Treffry-Goatley
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Abstract
A method of separating particulate material suspended in a liquid from that liquid is described. The method includes the steps of: providing at least one upright tubular filter unit having a top end and a lower end; introducing a flow of the suspension into the tubular filter unit at one end thereof; and allowing the suspension to pass through the tubular filter unit trapping particulate material on an inside surface thereof. Apparatus in which the method of the invention is performed is also described.
Claims10
A method of separating particulate material suspended in a liquid from that liquid, including the steps of:
- providing at least one upright tubular filter unit having a top end and a lower end;
- closing an end of the filter unit during filtration;
- introducing a flow of the suspension into the tubular filter unit at one end thereof;
- allowing the suspension to pass through the tubular filter unit trapping particulate material on an inside surface thereof;
- stopping or reducing the flow of suspension into the tubular filter unit;
- and
- sufficiently venting the interior of the tubular filter unit of liquid by opening the lower end of the tubular filter unit to generate at least a partial vacuum in the interior of the tubular filter unit, thereby removing at least a portion of the trapped particulate material.
Dependencies are inferred from the claim text.