2023 Online Catalog - Flipbook - Page 124
4 Aldex CR26
Aldex CR26 Iron Media, Manganese, Hydrogen Sulfide and Arsenic Removal Media
Resins, Media & Chemicals
6
Aldex CR26 is a special media designed
to provide excellent catalytic properties
required for removal of many contaminants
from potable and non-potable aqueous
streams. Aldex CR26 is an insoluble media
that oxidizes species in solution including
hydrogen sulfide, iron and manganese.
Metal-oxide nano-particles are precipitated
within the resin bed where they form very
strong chemical bonds with arsenite (As
III) and arsenate (As V). This allows Aldex
CR26 to thoroughly and effectively remove
arsenic along with Fe, Mn and H2S.
Chemical Free Regeneration - CR26 does
not require chemicals such as chlorine
dioxide, potassium permanganate, chlorine
or sodium chloride brine solution for
regeneration. The oxidative chemical locked
inside CR26 beads is regenerated via the
dissolved oxygen in the backwash water.
Potable and Non-Potable Water
Applications - CR26 requires less contact
time and is like standard softening resins in
bulk density and handling making it an ideal
choice for point-of-entry (POE) systems.
CR26 can be back-washed at lower flow
rates to achieve ideal bed expansion
General Guidelines
1. The media can treat water having an iron content above 10 ppm,
but the process is not economical particularly for large flow
rates. Hence it is recommended to remove iron by pretreating the
water by aeration, followed by clarification and filtration. CR26
shall then be used as a polishing media.
2. Free chlorine should be removed before passing water through
the media.
3. The treated water from Aldex CR 26 will have an iron content of
10 ppm), it is recommended to backwash the unit with treated water, so as to avoid
contamination of bottom portion of the bed.
7. The unit must be back-washed at specified flow rate for effective
removal of precipitated iron and suspended solids.
8. The backwash frequency shall be every 24 to 48 hours for
continuous operating unit. If the unit is operated intermittently,
backwash at the end of each cycle.
Physical Chemical Properties
Physical Form ........................................... Black, moist spherical beads
Influent pH................................................................................................... 6.0 to 9.0
Freeboard............................................................................................. 30% to 50%
Free chlorine ................................................................................ 0.5 to 1.0 mg/l
Organic matter.................................................................. Less than 1.0 ppm
Total dissolved solids ........................................... 2500 ppm maximum
Total suspended solids ..............................................................................
1.2 mm % ............................................................................... 5.0 maximum
