Grit removal devices and method of using same

Details Grit removal devices and method of using same Grit removal devices and method of using same

1990-11-05

1991-10-29

Dawson, Robert A.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210739, 210787, 210 97, 210104, 210143, 2105121, 2105123, 2105321, 210533, 210534, 209144, 209169, 209211, B01D 2130

Patent

active

050613758

ABSTRACT:
The efficiency of operation of vortex grit removal devices, typically used in wastewater treatment plants, is improved by measuring changes in the vertical level of liquid contained in the device as the grit removal operation progresses and using such level change measurements to automatically control the speed of rotation of the grit remover's rotor used to impart vortical motion to such body of liquid. Devices for performing such improved vortex grit removal operations are disclosed.

REFERENCES:
patent: 3589519 (1971-06-01), Bendel
patent: 3941698 (1976-03-01), Weis
patent: 4160734 (1979-07-01), Taylor et al.
patent: 4767532 (1988-08-01), Weis

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