K EY P OINTS ABOUT AFM® FOR REFERENCE
P RODUCT KEY POINTS
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Verified to provide a much better performance in comparison with high quality silica sand
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
Return of investment measured at under 2 years by UK Carbon Trust and Oakdene Hollins
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
P RODUCTION FACILITY AND VIDEOS
Dryden Aqua has invested € 8 million on a new AFM® production facility in 2014. View a
video of our facility: Click here
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
Q UOTE FROM S COTTISH W ATER
“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.”
Dryden Aqua Ltd
Butlerfield-Bonnyrigg,
Edinburgh EH19 3JQ Scotland
Page 4 of 44
Mark Haffey, R&D Technical Leader, Technology & Innovation Scottish Water