Filter-Ag

Filter-Ag granules have irregular surface characteristics affording maximum removal of suspended matter throughout the filter bed. Filter-Ag can be applied to systems designed for either pressure of gravity flow. It typically removes the normal suspended solids down to the 20 – 40 micron ranges. Advantages of Filter-Ag include less pressure loss through a bed of Filter-Ag than most other medias. It is lightweight and requires lower backwash rates. Filter-Ag has high dirt removal capacity that results in longer filter runs with a substantial saving in labor cost, backwash water and time out service.

Advantages

• There is less pressure loss through a bed of Filter-Ag than through most other filter medias

• Light weight requires lower backwash rates than those required for other filter medias

• High service rates in lower equipment costs and a savings in space

• High sediment reduction capacity results in longer filter runs, with a substantial savings in backwash water and time out of service

• Reduced shipping cost due to light weight/cu. ft.

• Replacement of sand with Filter-Ag in existing installations may increases filter capacity 100% or more. (Caution should be taken upon start-up that the lightweight Filter-Ag is not washed to drain.)

Physical Characteristics

• Color: light gray to near white

• Bulk Density: 24 - 26 lbs./cu. ft.

• Specific Gravity: 2.25

• Effective Size: .67 mm

• Uniformity Coefficienty: 1.8

• Mesh Size: 12 x 30

• Hardness: 6 (Mohs scale)

Operational Specifications

• Water pH range: wide range

• Bed depth: 24 - 36 in.

• Freeboard: 50% of bed depth (min.)

• Service flow rate: 5 gpm/sq. ft.

• Backwash flow rate: 8 - 10 gpm/sq. ft.

• Backwash expansion rate: 20 - 40% of bed depth