The Most Efficient Self-Cleaning Filtration

We Offers A Reliable Disc Filtration System
for filtering industrial process and wastewater. It is one of the most
efficient filtration systems available. As turbid water travels through the disc filter, debris is captured on the exterior wall and interior grooves of a stack of compressed discs. The backwash cycle expands the disc stack automatically and a series of nozzles spray a mixture of high pressure water and air against the loosened discs, spinning them clean quickly and efficiently. At the end of the backwash cycle, the disc stack automatically compresses and returns to the filtration cycle.

Excellent Filtrate Quality
The discs provide precise filtration grades, removing only particles
larger than the disc rating while allowing smaller particles to pass.
Unlike filter beds which may have breakthrough or channeling effects due to ineffective backwashing, these discs exhibit no channeling or breakthrough effects, and filtrate quality is maintained. The discs also maintain filtrate quality during plant upsets and loading spikes. Each disc stack has thousands of grooves and each groove has 12 to 30 stopping points, providing true depth-filtration.

Reduce Wastewater Disposal Costs
This extremely efficient backwash technique typically uses less
than 5% of the filtrate for backwashing, with some applications
demonstrating that less than 1% is easily obtainable.
In comparison, media beds use 10 to 15% of the filtrate volume
for backwash. The backwash source can be the filtered effluent,
compressed air and effluent, or an external source.

Operation Features   
• Low backwash volume    
• Continuous supply of filtrate during backwash   
• Elements do not need replacing   
• A simple element change for filtration grade adjustments   
• Modular units fit any space and can expand or retract easily
• 20 to 400 micron filtration size    
• Small footprint

How It Works
During filtration, the compressed disc stack retains particles while clean filtrate passes. Once the element is loaded with particles, the backwash cycle initiates automatically. First, the reversal of the water flow decompresses the disc stack allowing the discs to move freely. Then, a series of nozzles spray a mixture of high pressure water and air on the disc grooves, causing them to spin rapidly.
The combination of the spray and spinning action cleans the discs very quickly.

Applications
Disc filtration systems are ideal for:

•   Nozzle and instrument protection
•   Cooling water
•   Pretreatment before fine filtration, ion exchange or desalinization
•   High salinity water
•   Wastewater recovery
•   Sand separation
•   Resin traps

Material Options for Corrosive Applications
Systems are available with epoxy-coated carbon steel, stainless steel or plastic manifolds, steel or plastic valves, and plastic filters. These materials make the filters extremely durable in corrosive applications such as sea water, acids, caustics and aggressive liquids.

For Applications Requiring Media Filtration
Occasionally, media filters or sand beds are required for specific applications. Our media AGF filters have a number of advantages over traditional sand beds:

  •   Lower backwash volume than traditional beds
  •   Round shape allows more thorough mixing during backwash
  •   An extra pump is not needed for backwash
  •   Shallow beds allow for very effective backwash
  •   All units operate simultaneously—no standby vessels required