2023 Online Catalog - Flipbook - Page 140
4
Filter-Ox™
Filter-Ox™
Resins, Media & Chemicals
Filter-Ox™ is a highly effective filter media capable of
reducing iron, manganese and hydrogen sulfide from water
through oxidation and filtration. Soluble iron and manganese
are oxidized and precipitated by contact with the catalytic
coating on the Filter-Ox™ granules. The hydrogen sulfide
is oxidized to an insoluble sulfur precipitate. Precipitates
are then filtered and removed by back-washing.
Filter-Ox™ is an engineered media that utilizes a super high
purity manganese dioxide coating bonded to a durable,
lightweight silica substrate. Manganese dioxide is a powerful
oxidizer and Filter-Ox™ contains more manganese dioxide
than other manganese based filter medias. Manufactured in
the USA, Filter-Ox™ contains almost no fines and does not
require long initial backwash times. A standard sterilization
treatment using chlorine is all that is needed at start up.
Untreated water should periodically be monitored for raw water
parameters. Treated water should periodically be monitored for
manganese, iron and hydrogen sulfide shortly before a regeneration
and immediately after a regeneration to monitor how the filter
system is functioning. Elevated treated water concentrations
before regeneration may mean that the filter media reduction
capacity has been exceeded. Take corrective actions as necessary.
Low pH or high pH are the most likely conditions
leading to media destruction.
Advantages
22
• Iron reduction over wide pH range
• Effective reduction of hydrogen sulfide in addition
to iron and/or manganese
• No harmful effects from a chlorine feed
• Low attrition for long bed life
Physical Properties:
CONDITIONS FOR OPERATION
• Water pH range: ................................................................ 6.2-8.5
• Maximum water temperature: ................................... 100°F/38°C
• Bed depth: ........................................................................... 30 in.
• Freeboard: .............................................. 40% of bed depth (min.)
• Service flow rate: ..............................2-12 gpm/sq. ft. continuous
• Backwash flow rate: ....... 12 gpm/sq. ft. at 55°F, warmer waters
require higher flow rates
• Free chlorine concentration less than .5 ppm
Methods of Regeneration and Regeneration Requirements:
• Continuous regeneration using chlorine feed or air are
recommended
• Mg/l CI2 (1x mg/l Fe) + (3x mg/l Mn)
• Air draw or air injection
• Use an injector size that is two sizes larger than a typical
softener application
• Draw/slow rinse time greater than 50 minutes
• Down flow rinse (Fast Rinse) 4 minutes minimum
Catalytic Oxidation (Co)
Catalytic Oxidation (CO) operation is recommended in applications
where iron removal is the main objective in well waters with or
without the presence of manganese. This method involves the
feeding of a predetermined amount of chlorine (CI2) or other
strong oxidant directly to the raw water before the Filter-Ox™
Filter.
Chlorine should be fed at least 10-20 seconds upstream of the
filter, or as far upstream of the filter as possible to insure adequate
contact time. A free chlorine residual carried through the filter will
maintain Filter-Ox™.
Certified to
NSF/ANSI 61
• Bulk Density: ........................................................... 84 lbs./cu. ft.
• Effective Size: ................................................................... .56 mm
• Uniformity Coefficient: ........................................................... 1.51
• Moisture: ..............................................................................
