How it Works
During dry weather conditions the flow to the treatment works will pass underneath the screens in the dry weather flow channel.

In a storm event the inflow rate to the chamber will exceed the outflow rate causing water levels to rise within the chamber and spill through the screens (red arrows).

The Hydro-Static Screen is mounted over the dry weather flow channel so that the flow passes up and through the screen during a storm event. Solids and floatables are trapped below the screen and returned to the sanitary continuation flow (brown arrow). Screened effluent is discharged to a receiving waterway (blue arrow).

An emergency overflow weir is incorporated into the screen should the peak design flow be exceeded.