Routine backwashing of the Propeller Bead filters mitigates high waste loads.
When backwashing for clarification, wait longer between backwashes. Backwash when the pressure builds up, but does not exceed the max pressure specified by the filter. This allows for maximum solids capture.
When backwashing for biological filtration, do not spin the propeller for longer than a minute. Excessive abrasive backwashing will knock off the nitrifying bacteria that gives you even water quality. Beads should appear tan or beige and fuzzy when they have a healthy biofilm.
There are two methods of backwash operation, standard and pressurized with their procedures explained below.
Propeller Bead Operation:
- Pump Off
- Inlet Valve Closed
- Mixing Motor on for 30-60 Seconds or until Beads Fluidize. Excessive mixing will scour beneficial bacteria off of the beads.
- Mixing Motor Off
- 10 Minute Settling Time. Allows Solids to Settle and Bead Bed to Reform.
- Open Sludge Valve and Drain Sludge until Water Runs Clear.
- Close Sludge Valve
- Open Inlet Valve
- Turn Pump On – Resume Normal Operation.