High Profile PolyGeyser Operation & Backwash
During the filtration mode, water continually enters the filter beneath the bed then passes through the bed where the solids are captured. Biofilms develop on the bead surfaces.
Meanwhile, air is slowly injected into the charge chamber. The bottom half of the HPPG filter, builds a charge for a backwash event and then functions as a settling basin, recycling the backwash water.
The increase in air pressure pushes the water downward through the charge chamber compartment then up through the center conduit of the cone. This is a very slow process; the solids swept into the charge chamber during the last backwash settle out. The clear water is then pushed back through the bead bed as it re-enters the recirculating loop.
No air escapes the air chamber until it is filled; then the air is suddenly released through the trigger mechanism. The bubbles exit the trigger just beneath the bead bed. The bubbles agitate the beads; knocking solids and biofilm off the beads. Water continues to flow into the unit, but no water flows out of the filter during the short three to five second backwash event.
As the beads are washed, the entire bead bed drops as the dirty water underneath is drawn into the charge chamber, replacing the air that is escaping through the trigger. Solids that settled into the sludge compartment are briefly re-suspended and aerated.
Eventually, the water rising in the sludge chamber floods the trigger, bringing water movement in the charge chamber and sludge basin to an end.
Solids begin to continue to settle as the filtration chamber is refilled with the water from the inlet. The beads float up to reform the bead bed. As soon as the water rises to the outlet, filtration resumes
Periodically Drain Sludge
The filter will continue to filter and backwash itself several times a day. After the sludge has built up, the user can open the sludge valve to drain the concentrated sludge from the filter. A natural fertilizer, the sludge can be poured out on the lawn or nearby plant where it will naturally degrade.