Fairfield - Bucket Elevator

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.