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What Is Dryden AFM® Media?

AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure. AFM® resists biofouling, biocoagulation and transient wormhole channeling of unfiltered water and never needs to be recharged or replaced.

 AFM® is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to increase its surface area by up to 300 times for superior mechanical and electro-static filtration performance.

 The activated surface of AFM® is self-sterilizing which prevents bacteria mud-balling, coagulation and channeling of unfiltered water through the filter bed. Activation increases the surface area by up to 300 times for catalysis and adsorption reactions. Similar to activated carbon, the surface nano-structure adsorbs pollutants from the water but unlike carbon, AFM® is recharged by just back-washing with water.

Dryden AFM® Advantages

AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure.

 AFM® is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to become self-sterilizing and to acquire superior adsorption properties.

 Self sterilizing surface: AFM® is 100% bio-resistant, prevents channeling and the biological conversion from urea to ammonia in the filter bed responsible for the toxic chlorine smells (trichloramines).

 Superior adsorption properties: : The surface area of AFM® is strongly increased and becomes hydrophobic (water-repellent) to filter particles down to 1 micron and to remove about 50% more organic substances from the water than sand and other glass filter media, thus reducing the formation of harmful THMs including chloroform by up to 50%.

AFM® replaces sand in all sand filters

AFM® reduces the biological risk from bacteria and parasites as well as the chemical risk. AFM® does not channel so it is an effective barrier against Cryptosporidium and giardia. AFM® does not incubate or discharge bacteria and will reduce the bacterial load of the product water. Also because of the better filtration performance, there are lower THM concentrations. AFM® also provides an excellent solution to remove metals and heavy metals from water.

AFM® is manufactured in a state-of-the-art hygienic factory designed by Dr. Howard Dryden, CEO and inventor of AFM®. AFM® contains metal oxide catalysts that dissociate oxygen and water to create a zone of high oxidation potential to prevent bacteria growing on the surface of AFM®. In addition, the huge activated surface area has a strong negative charge for the adsorption of sub-micron particles and dissolved organic molecules. This makes AFM® far superior to any other filtration media because AFM® does not need to be replaced and is recharged by a simple back-wash.

Benefits

• ... more than doubles the performance of an existing filtration system without the need for additional investments
• ... is not subject to biodynamic instability and will never allow untreated water to pass the filter
• ... substantially lowers chlorine oxidation demand by up to 50%
• ... lowers backwash water demand by an average of 50%
• ... is expected to last for the life of the filtration system
• ... provides quick return on investment

Operating criteria

• Filtration velocity: 1 - 30 m/h
• Backwash velocity: 40 - 50 m/h
• Backwash duration: 3 - 10 minutes
• Max. operating differentialpressure: 0.5 bar
• Water pH limits: 3- 9
• Water temperature limits: 1 -
• 100 C For AFM layering details, refer to IFU Instructions for Use Document

AFM® Grade 1 specification

Bulk bed density: 1‘250 kg/m3
 Effective size: 0.45 mm
Spherizity: 0.75 - 0.80
Uniformity coefficient: 1.6 - 1.8
Aspect ratio: 2 - 2.4
Specific gravity: 2,4 kg/l
Organic contamination: < 50g/ton Color purity: > 98%
AFM® is supplied in 21 kg (47 lbs), 25 kg (55 lbs) or 1000kg (2200 lbs) bags
AFM is available in 4 grades

Dryden AFM® Filter Media - Sterner AquaTech UK
Dryden AFM® Filter Media - Sterner AquaTech UK
Dryden AFM® Filter Media - Sterner AquaTech UK
Dryden AFM® Filter Media - Sterner AquaTech UK

Dryden AFM® Filter Media

£1,824.00

Price for pallet - 40 x 25kg bags

AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sandfilters without the need of additional investments in infrastructure. AFM® resists biofouling, biocoagulation and transient wormhole channeling of unfiltered water and outlasts all other filter media.

  • Description
  • Advantages
  • Grade 1 Specification
  • Downloads
  • AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure. AFM® resists biofouling, biocoagulation and transient wormhole channeling of unfiltered water and never needs to be recharged or replaced.

    AFM® is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to increase its surface area by up to 300 times for superior mechanical and electro-static filtration performance.

    The activated surface of AFM® is self-sterilizing which prevents bacteria mud-balling, coagulation and channeling of unfiltered water through the filter bed. Activation increases the surface area by up to 300 times for catalysis and adsorption reactions. Similar to activated carbon, the surface nano-structure adsorbs pollutants from the water but unlike carbon, AFM® is recharged by just back-washing with water.

  • AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure.

    AFM® is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to become self-sterilizing and to acquire superior adsorption properties.

    Self sterilizing surface: AFM® is 100% bio-resistant, prevents channeling and the biological conversion from urea to ammonia in the filter bed responsible for the toxic chlorine smells (trichloramines).

    Superior adsorption properties: : The surface area of AFM® is strongly increased and becomes hydrophobic (water-repellent) to filter particles down to 1 micron and to remove about 50% more organic substances from the water than sand and other glass filter media, thus reducing the formation of harmful THMs including chloroform by up to 50%.

  •  

    • Bulk bed density: 1‘250 kg/m3
    • Effective size: 0.45 mm
    • Spherizity: 0.75 - 0.80
    • Uniformity coefficient: 1.6 - 1.8
    • Aspect ratio: 2 - 2.4
    • Specific gravity: 2,4 kg/l
    • Organic contamination: < 50g/ton
    • Color purity: > 98%
    • AFM® is supplied in 21 kg (47 lbs), 25 kg (55 lbs) or 1000kg (2200 lbs) bags
    • AFM is available in 4 grades
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