Vortex grit collector with mechanical conveyor for grit removal
AssigneeSchloss Engineered Equipment, Inc.
InventorCharles M. Schloss
Life of this patent
Estimating the term…
Abstract
A grit removal device, as may be used in a water or wastewater treatment plant, has a vortex grit collector and a mechanical conveyor for removing the grit from the collector. The grit collector includes a tank having an influent channel and an effluent channel, and a stirrer or other mechanism for inducing vortex flow within the tank. The tank has a sump located beneath it, wherein grit settles. A mechanical conveyor, such as a rotating screw, removes and dewaters grit from the sump to an exterior location. The conveyor is preferably offset from the horizontal. The invention also includes a method of grit removal employing the device.
Claims12
A grit removal device comprising:
- a tank having an influent channel leading into the tank and an effluent channel leading out of the tank;
- means for inducing vortex flow within the tank;
- a sump beneath the tank for the collection of grit;
- a trough or pipe having an end situated inside the sump and another end situated outside the sump, the trough or pipe being inclined from the horizontal;
- and
- a mechanical conveying means situated at least partially within said trough or pipe for removing and dewatering grit from the sump to an exterior location;
- and
- a gate that directs water from the effluent channel into the mechanical conveying means when the gate is in an open position.
A grit removal device comprising:
- a tank having an influent channel leading into the tank and an effluent channel leading out of the tank;
- means for inducing vortex flow within the tank;
- a sump beneath the tank for the collection of grit;
- a trough or pipe having an end situated inside the sump and another end situated outside the sump, the trough or pipe being inclined from the horizontal;
- and
- a mechanical conveying means situated at least partially within said trough or pipe for removing and dewatering grit from the sump to an exterior location;
- and
- a gate that directs water from the influent channel into the mechanical conveying means when the gate is in an open position.
A method of grit removal comprising:
- (a) providing a tank having an influent channel leading into the tank and an effluent channel leading out of the tank;
- (b) inducing vortex flow within the tank;
- (c) providing a sump beneath the tank for the collection of grit;
- (d) providing a trough or pipe having an end situated inside the sump and another end situated outside the sump, the trough or pipe being inclined from the horizontal;
- and
- (e) mechanically conveying grit from the sump to an exterior location using means at least partially within said trough or pipe;
- and
- (f) opening a gate to direct water from the effluent channel into means in paragraph (e).
A method of grit removal comprising:
- (a) providing a tank having an influent channel leading into the tank and an effluent channel leading out of the tank;
- (b) inducing vortex flow within the tank;
- (c) providing a sump beneath the tank for the collection of grit;
- (d) providing a trough or pipe having an end situated inside the sump and another end situated outside the sump, the trough or pipe being inclined from the horizontal;
- and
- (e) mechanically conveying grit from the sump to an exterior location using means at least partially within said trough or pipe;
- and
- (f) opening a gate to direct water from the influent channel into means in paragraph (e).
Dependencies are inferred from the claim text.