SVS Aqua Technologies LLP

UF, RO membranes & DM plant resins work best when they are new and clean. Fouling of the membranes by inorganic and organic contaminants as well as biofouling are some of the main issues affecting the performance and cost of running water treatment systems.

AFM is an activated mesoporous aluminosilicate with glass as a structural substrate. The surface area is over 1,000,000m2 per tonne of filter media of a particle size 0.5 to 1.0mm. The very large surface area has a negative –ve charge for the adsorption of positive +ve particles that are too small to be mechanically removed from the water. The pre-coagulation and flocculation stage will drag some chemicals out of solution to form small positive charge particles that are easy to remove by AFM.

AFM is used prior to UF and RO, however, AFM filtration can actually out-perform UF filtration when combined with pre-coagulation and flocculation via a ZPM static mixer prior to AFM filtration. AFM is a much lower cost than UF and can remove most particles down to 0.1 microns and many particles that are much smaller by adsorption reactions. While UF will give absolute filtration down to 0.03 microns, AFM can give nominal filtration down to at least 0.1microns and sub 0.01-micron particles by electrical adsorption reactions. AFM will also remove many chemicals and pollutants from solution by selective molecular sieve adsorption. Indeed we can now activate AFM to remove specific dissolved priority substances from water. AFM can, therefore, perform better than UF and is a more cost-effective and efficient option as a pre-treatment prior to RO.

Regeneration of AFM is by a simple backwash using filtered water, and the process is 100% sustainable, the media should last for the life of the filtration system.

You don’t need to use chlorine with AFM for cleaning, so no THM (trihalomethane) production with organic matter such as organic acids. In addition to dissolved natural organic matter, TCP (trichlorophenol) can act as a precursor for the production TCA trichloroanisole. TCA has a terrible taste even at single-digit parts per trillion.

As a pre-treatment prior to RO or UF, the SDI after AFM will be at least 50% to 75% lower than the SDI from a sand filter. IFTS independent accredited laboratory has conducted a very detailed analysis of AFM in comparison to sand other media. The results confirm the superior performance of AFM.

Product details:

• The surface has a -70mV charge on it.
• Surface area of SFm is 1000000m2/ton
• Removed Particles up to 5 Micron
• Packaging: 25 kg bags

AFM® is successfully working in over 100‘000 private and public swimming pools worldwide.

Every swimming pool has a pressure sand filter installed which normally has a sand as a media of different grades. AFM is used to replace existing filter media in the PSF.

AFM® reduces the biological risk from bacteria and parasites as well as the chemical risk from water and air just above the surface. The result is a safer pool for children, a healthier workplace for staff in public pools and a greatly improved swimming experience for everyone.

Key benefits at a glance

• Crystal clear water: AFM® filters at least 30 % more than silica or glass sand.
• Lower consumption of chlorine: Everything filtered out doesn’t ??t need to be oxidised by chlorine. The better the filtration, the lower the chlorine demand.
• No trichloramine – no chlorine smell: AFM® prevents the growth of biofilm, therefore, eliminating trichloramine.
• No biofilm – no Legionella: Biofilm is a slippery film of bacteria, that can provide a home for pathogens such as Legionella, Staphylococcus and (MRSA) Pseudomonas.
• Chlorine-free systems: AFM® greatly reduces the oxidation demand of the water which makes it perfect for chlorine free systems.

Commercial benefits of use of AFM in swimming pool -

• No lump formation in the PSF or no need to replaces the sand in the bed for the life of the filter.
• Reduced chemical consumption by 20 to 30% at least.
• Reduced operational, handling and manpower cost.
• Breakeven point of less than 1 year.
• The cost of health can not be measured in terms of money.

• Single filter water flow:2-50m3 / h
• Pressure rating:2.5-16 bars
• Type: media filter
• Application:irrigation water treatment
• Material:Carbon Steel
• Control mode:DP/TIMER
• Application:irrigation water treatment
• Material:Carbon Steel

• The surface has a -70mV charge on it.
• Surface area of SFm is 1000000m2/ton
• Removed Particles up to 5 Micron
• Packaging: 25 kg bags

• AFM®is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM®is certified under Regulation 31 in the UK and International NSF61
• AFM®is is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM®manufactured under ISO9001-2008 quality procedures.
• AFM®complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Back wash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from water.
• AFM Removes color & odor.

• Removal or Arsenic from Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For color removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as an substitute to Disc, Bag, Cartridge filters.

AFM - active filter media is a product of Dryden Aqua Research & Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimised media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self-sterilising and the only activated glass filter media.

• AFM is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM is certified under Regulation 31 in the UK and International NSF61
• AFM is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM manufactured under ISO9001-2008 quality procedures.
• AFM complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM-

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM®is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM®is certified under Regulation 31 in the UK and International NSF61
• AFM®is is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM®manufactured under ISO9001-2008 quality procedures.
• AFM®complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialized applications of AFM –

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

Certain specialised applications of AFM –

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

UF, RO membranes & DM plant resins work best when they are new and clean. Fouling of the membranes by inorganic and organic contaminants as well as biofouling are some of the main issues effecting the performance and cost of running water treatment systems.

AFM is an activated mesoporous aluminosilcate with glass as a structural substrate. The surface area is over 1,000,000m2 per tonne of filter media of a particle size 0.5 to 1.0mm. The very large surface area has a negative -ve charge for the adsorption of positive +ve particles that are too small to be mechanically removed from the water. The pre-coagulation and flocculation stage will drag some chemicals out of solution to form small positive charge particles that are easy to remove by AFM.

AFM is used prior to UF and RO, however AFM filtration can actually out-perform UF filtration when combined with pre coagulation and flocculation via a ZPM static mixer prior to AFM filtration. AFM is a much lower cost than UF and can remove most particles down to 0.1 microns and many particles that are much smaller by adsorption reactions. While UF will give absolute filtration down to 0.03 microns, AFM can give nominal filtration down to at least 0.1microns and sub 0.01 micron particles by electrical adsorption reactions. AFM will also remove many chemicals and pollutants from solution by selective molecular sieve adsorption. Indeed we can now activate AFM to remove specific dissolved priority substances from water. AFM can therefore perform better than UF and is a more cost effective and efficient option as a pre-treatment prior to RO.

Regeneration of AFM is by a simple back-wash using filtered water, and the process is 100% sustainable, the media should last for the life of the filtration system.

You don't need to use chlorine with AFM for cleaning, so no THM (trihalomethane) production with organic matter such as organic acids. In addition to dissolved natural organic matter TCP (trichlorophenol) can act as a precursor for the production TCA trichloroanisole. TCA has a terrible taste even at single-digit parts per trillion.

As a pre-treatment prior to RO or UF, the SDI after AFM will be at least 50% to 75% lower than the SDI from a sand filter. IFTS independent accredited laboratory have conducted a very detailed analysis of AFM in comparison to sand other media. The results confirm the superior performance of AFM.

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

Chromium is occasionally found in ground water in trace amount from 1 to 10 ug/l however, the occurrence of chromium is usually associated with pollution from industries such a leather tanning, wood preservation and textiles. Polluted ground water may have much higher concentrations.

Hexavalent Chromium is very difficult to remove down to low concentrations, however, AFM can absorb Cr6+ directly from the water. If the concentration is low then it may be possible to just filter the water through a deep AFM filter bed >1200mm at a slow flow rate, 5m/hr. This may be all of the treatment required.

AFM has a low capacity for chromium, so in order to improve performance, water pretreatment may be required The Cr6+ is reduced to Cr3+ by using a reducing agent such as ferrous sulphate or calcium polysulphide. The reaction takes time, so a buffer tank of more than 30 minutes is required.

After the 30-minute contact tank, the water overflows to a second contact tank which is aerated, this oxidises any remaining ferrous to ferric which co-precipitates and flocculates the Cr3+ to form a solid particle that can be more easily removed by AFM. The bed may take few week to get conditioned to chromium.

1. The pH of the water to be treated should be above pH7.5
2. Ferrous sulphate and lime/calcium polysulfide may be injected into the water via a ZPM cavitating static mixer. Application rate approx. 20:1, 20 ferrous to 1 Chromium, and 5:1 for the calcium polysulphide.
3. After injection, the water enters a sedimentation decantation reaction tank for at least 30 minutes.
4. After decantation to water enters a second 30-minute retention tank for aeration. The aeration level is the same as water flow if water flow is 50m3/hr air flow is 50m3/hr applied via Dryden Aqua air diffusers. The aeration is not sufficient to oxidise the Cr3+ back to Cr6+ but it is sufficient to oxidise the Fe2+ to Fe3+ which helps to co-precipitate the Cr3+
5. The water is pumped out of the aeration tank to an AFM pressure filter.

Pretreatment of the water prior to filtration by AFM is very important. AFM will remove Cr6+ and Cr3+ by the following mechanisms:

• Direct adsorption of Cr6+ ion on to AFM
• Direct adsorption of chromium Cr3+: ferric particles onto the -ve charged surface of AFM
• Physical filtration of most particles down to 1 micron
• Back-washing with water will completely remove the Chromium
• Backwash water sludge should be separated and disposed of responsibly

AFM - active filter media is a product of Dryden Aqua Research & Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimized media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self sterilizing and the only activated glass filter media.

• AFMis an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFMis certified under Regulation 31 in the UK and International NSF61
• AFMis is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFMmanufactured under ISO9001-2008 quality procedures.
• AFMcomplies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFMis an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFMis certified under Regulation 31 in the UK and International NSF61
• AFM is compliance with European Water Directive (98/83/EC) (80/778/EEC)
• AFM manufactured under ISO9001-2008 quality procedures.
• AFM complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFMis certified under Regulation 31 in the UK and International NSF61
• AFMis compliance with European Water Directive (98/83/EC) & (80/778/EEC)
•  AFMprepared under ISO9001-2008 quality procedures.
• AFMcomplies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8 Benefits of AFM -
• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
•  AFM rejects bacteria growth and worm-hole channeling
• Back wash water requirement reduced by 50%.
•  No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from water.
•  Reduced consumption of biocides & flocculants by 25 to 50%.
•  AFM removes organic impurities/NOM from water.
•  AFM Removes color & odor. Certain specialized applications of AFM - In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
• Removal or Arsenic from Potable water.
•  Removal of chromium 6 from waste water.
•  For COD reduction in waste water.( Textile, dyes & chemical industry).
•  For color removal in waste water.
•  For removal of Pseudomonas in process water.
•  Process water treatment in pressure sand filters.
•  Process water treatment for power plants.
•  Raw water treatment in SWRO plants.
•  AFM as an substitute to Disc, Bag, Cartridge filters.

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to adsorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM®is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM®is certified under Regulation 31 in the UK and International NSF61
• AFM®is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM®manufactured under ISO9001-2008 quality procedures.
• AFM®complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialized applications of AFM –

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM is certified under Regulation 31 in the UK and International NSF61
• AFM is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM manufactured under ISO9001-2008 quality procedures.
• AFM complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

AFM – active filter media is a product of Dryden Aqua Research Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimised media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self-sterilizing and the only activated glass filter media.

• AFM®is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM®is certified under Regulation 31 in the UK and International NSF61
• AFM®is compliance with European Water Directive (98/83/EC) (80/778/EEC)
• AFM®manufactured under ISO9001-2008 quality procedures.
• AFM®complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour odour.

Certain specialised applications of AFM –

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.

• AFM is an activated amorphous alumino-silicate with positive charge organic adsorption (OAD) number greater than 10, the activated hydrophilic surface has cation bridging, hydrogen bonding and entropic interactions with organic molecules.
• High surface electrical charge density Zeta potential > -70mv
• AFM is certified under Regulation 31 in the UK and International NSF61
• AFM is compliance with European Water Directive (98/83/EC) & (80/778/EEC)
• AFM manufactured under ISO9001-2008 quality procedures.
• AFM complies with BSEN12902 and BSEN 12904.
• Uniformity coefficient better than 1.5
• Sphericity factor better than 0.8

• AFM mechanically removes most particles down to 5 microns.
• Sand surface area, approx 3000m2/tonne, AFM surface area >1,000,000 m2/tonne
• The high surface negative charge potential helps to absorb micron and sub-micron particles as well as some dissolved organics
• AFM rejects bacteria growth and worm-hole channelling
• Backwash water requirement reduced by 50%.
• No requirement to replace AFM for the life of the filter.
• AFM removes heavy metals, Iron, Manganese & Arsenic from the water.
• AFM reduces BOD, COD from the water.
• Reduced consumption of biocides & flocculants by 25 to 50%.
• AFM removes organic impurities/NOM from the water.
• AFM Removes colour & odour.

Certain specialised applications of AFM -

In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.

• Removal or Arsenic from the Potable water.
• Removal of chromium 6 from waste water.
• For COD reduction in waste water.( Textile, dyes & chemical industry).
• For colour removal in waste water.
• For removal of pseudomonas in process water.
• Process water treatment in pressure sand filters.
• Process water treatment for power plants.
• Raw water treatment in SWRO plants.
• AFM as a substitute to Disc, Bag, Cartridge filters.