2023 Online Catalog - Flipbook - Page 137
Birm®
4
Birm®
Birm® may also be used for manganese removal with the same
dependability as iron removal. In these applications the water to
be treated should have a pH of 8.0 to 9.0 for the best results. If
the water also contains iron, the pH should be below 8.5. High
pH conditions may cause the formation of colloidal iron which is
very difficult to filter out. All other conditions remain the same for
either manganese or iron removal.
Certified to
NSF/ANSI 61
Advantages:
• Under the proper conditions, no chemicals to purchase
for maintenance. Regeneration not required.
• Iron removal efficiency is extremely high
• Negligible Labor Cost - only periodic
back washing required
• Durable material with a long life and wide
temperature range
• Weighs only 46-50 lb./cubic foot.
Physical Properties:
Color ........................................................................................................................................... Black
Density ....................................................................................................... 47-50 lbs./cu. ft.
Effective Size ............................................................................................................ 0.61 mm
Uniformity Coefficient .................................................................................................. 1.72
Conditions for Operation:
• Alkalinity should be greater than two times the combined
sulfate and chloride concentration
• pH - 6.8+
• Dissolved Oxygen (D.O.) content must be equal to at
least 15% of the iron (or iron and manganese content)
• Bed Depth - 30 - 36 in.
• Backwash Rate - 10-12 gpm. sq. ft.
• Backwash Bed Expansion - 35 -50% of bed depth
• Service Flow rate - 3.5 - 5 gpm. sq. ft. intermittent flow rates
and/or favorable conditions may allow higher flow rates
Birm® is a federally registered trademark of Clack Corporation.
Birm (for Iron Removal)
Birm is used to remove dissolved iron and manganese. The pH must be above 6.8 and dissolved
oxygen content must be equal to 15% of the iron and manganese content. No regeneration is required,
only periodic back-washing.
Pallet quantity - 40 bags per pallet
$
BIRM-R
1 Cubic Foot Bag
107.75
$
BIRM-R-50-BOX
1/2 Cubic Foot Box
75.25
$
BIRM-R-75-BOX
3/4 Cubic Foot Box
102.25
$
BIRM-R-100-BOX
1 Cubic Foot Box
130.00
Call Nelsen Toll-Free — OHIO - 800.362.9686, ARIZONA - 866.445.4299, TEXAS - 855.674.0357 or FLORIDA - 866.712.6796
All prices and products subject to change without notice. ©Nelsen Corporation
Resins,
Resins, Media
Media && Chemicals
Chemicals
Birm® is an efficient and economical method of removing
dissolved iron and manganese compounds from raw water
supplies. It may be used in either gravity fed or pressurized
water treatment systems. Birm® acts as an insoluble catalyst to
enhance the reaction between dissolved oxygen (D.O.) and the
iron compounds. In ground waters, the dissolved iron is usually
in the ferrous bicarbonate state due to an excess of free carbon
dioxide and is not filterable. Birm®, acting as a catalyst between
the oxygen and the soluble iron compounds, enhances the
oxidation reaction of Fe++ to Fe+++ and produces ferric hydroxide
which precipitates and may be easily filtered. The physical
characteristics of Birm® provide an excellent filter media which
is easily cleaned by back washing to remove the precipitant.
Birm® is not consumed in the iron removal and therefore offers a
tremendous economic advantage over many other iron removal
methods.
Section
19
4
