AFM® activated filter media


Instructions for use document: 

AFM Water treatment

Key Points about AFM® for reference

down load AFM_IFU.pdf

Product key points

  • Verified to provide a much better performance in comparison with high quality silica sand
  • Will remove all know parasites. Verified to achieve 99% filtration down to 3 microns with no coagulation or flocculation using grade 0, 1000mm bed depth 20m/hr velocity
  • Verified to achieve 97% filtration down to 5 microns, with no coagulation and flocculation using grade 1, 1000mm bed depth 20m/hr velocity. When used with flocculants, AFM achieves nominal filtration of 0.1 microns
  • Return of investment measured at under 2 years by UK Carbon Trust and Oakdene Hollins
  • Potential solution to effectively remove parasites such as cryptosporidium oocysts
  • High surface negative charge density, works well with coagulants and flocculants to remove dissolved components and provide nominal filtration down to sub micron level in certain applications
  • Bio-resistant, will not become a biofilter, AFM is not subject to transient wormhole channelling, and unfiltered water will never pass the filter bed
  • Stable and predictable performance in freshwater and marine systems, perfect for SWRO
  • Product water will have at least 50% lower chlorine oxidation demand than an equivalent sand filter, so lower concentration of disinfection by products
  • SDI will be lower with AFM in comparison to sand filtration
  • Future proofing against tighter legislation and regulation
  • AFM is expected to last for the life of the filtration systems.
  • AFM is an engineered product manufactured to a precise specification under ISO9001-2008 conditions
  • Certified under Reg31, NSF50 & NSF61, Environmental standards, Singapore Green Tick,  HCAAP approval imminent

Production facility and videos

Dryden Aqua has invested € 8 million on a new AFM production facility in 2014. View a video of our facility

Swimming pool water treatment video animation click here

IFTS report

The report is a Dryden Aqua condensed version of the IFTS report that has been endorsed by IFTS.  click here


Quote from Scottish Water


Scottish Water tested AFM, the results demonstrated significant performance advantage over sand in relation to suspended solids/iron removal and process efficiencies. I can also confirm that Scottish Water has been using AFM for targeted effluent treatment for some 14 years with considerable success in the removal of solids and BOD reduction.  Mark Haffey , R&D Technical Leader, Technology & Innovation Scottish Water

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