This grit collector consists of a screw conveyor with a vertical bucket elevator
and dewatering screw. Grit collector is installed in a regular settling tank designed
for a velocity of approximately one foot per second at average sewage flow and sized
for not less than one minute retention. Forced air can be introduced into the tank,
at period of low sewage flow by means of air diffusers to produce hydraulic turbulence
that simulates the normal designed velocity to keep the organic from settling along
with the grit.
The Screw compactor consist of
- Bottom connecting screw
- Buckets
- Collector chain
- Baffles
- Water spray piping
- Aeration system
- Dewatering screw conveyor
- Shafting
- Bearings
- Collector chain sprockets
- Head enclosure
- Drive assembly