Apparatus adapted for use in a water
clarification system which removes particles of greater
than a predetermined size from the clarified water includes
a screen or a pair of concentric screens positioned
in a clarified water storage area between an inlet and
a clarified water outlet. One or more spray heads for
direct a shower of high pressure filtered clarified
water at the outlet side of the screen or screens to
loosen or remove particles therefrom. In addition, a
rotating brush can act on the inlet side of the screen.
Particles removed by the cleaning elements are recirculated
through the system. Water levels are maintained by overflow
control or by monitoring the water level and utilizing
the output from the monitor or monitors to selectively
control valves in the inlet or outlets from the system.