Activated filter glass
AFM® Activated Filter Media is a direct replacement for sand, doubling the performance of sand filters without the need for additional investments in infrastructure. AFM® resists biofouling, biocoagulation and transient wormhole channelling 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 channelling 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.
- Bio-resistant: Prevents the growth of bacteria.
- Strong negative electrostatic charge.
- Very large filtration surface.
- It far exceeds the performance of silica sand.
- Filtration velocity: 1 – 30m/h.
- Backwash velocity: 40 – 50m/h.
- Backwash duration: 3 – 10 minutes.
- Max operating differential pressure: 0.5 bar.
- Water pH limits: 3 – 9.
- Water temperature limits: 1 – 10°C.
