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Polygeyser Bead Filter
The AST Polygeyser Bead filter is AST’s patented line of beadfilters featuring a breakthrough in filter technology: automatic pneumatic backwash for hands-off maintenance and low water loss. Learn more about our unique PolyGeyser filters below, or contact the AST team and we will help you choose the perfect PolyGeyser for your application.
AST Polygeyser Bead filter – How it Works
PolyGeyser® Bead Filters are the newest addition to Aquaculture Systems Technologies’ line of Bead Filter Technologies. The patented PolyGeyser® Bead Filters (U.S. Patent # 5,770,080 and 6,517,724, European Patent # 0977713B, and Canadian Patent # 2,287,191) utilize the same filtration mechanism as all of our bead filters namely water from the aquatic system passes upward through the packed bed of plastic beads. The beads capture the solids, while simultaneously providing a large surface area (400 ft2 /ft3 ) for the attachment of nitrifying bacteria which remove dissolved nitrogenous wastes. Bead filters are excellent clarification units, capable of maintaining display quality water at high waste loading rates. Studies have shown that Bead Filters capture 100% of particles > 50 microns and 48% of particles in the 5-10 micron range per pass.
Under development for several years, the PolyGeyser technology exploits the biofilm protection provided by our Enhanced Nitrification (EN) Bead Media. Additionally, the PolyGeyser® Bead Filters offer a very high degree of reliability and are virtually resistant to clogging and caking by virtue of the fact that they backwash automatically using no moving parts or electronics. As a “bioclarifiers” the PolyGeyser® are capable of handling ammonia loads 50 to 100 percent higher than standard bead filters, at a fraction of the water loss and head loss!
These units are intended to operate for months with periodic pass-bye inspection to assure that the air blower and input pumps are operating. The air blowers drive the recirculation loops and only the beads, water, and air move within the unit – there is nothing to break, not even a check valve. These filters can even be buried, as all vital components can be reached from the top.