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Manganese
Greensand Iron Filters
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Manganese
Greensand Iron Filter
These Iron Filter systems use
a high quality manganese greensand media. The system is installed in the main
water line. When the raw water enters your iron filter it passes down through
the filter media and gets oxidized. This causes precipitation of the minerals
and any iron, manganese or hydrogen sulfide present in your water supply is
trapped resulting in a clean, filtered water flow to your household. The
filter media is periodically regenerated automatically, backwashing the
trapped minerals to the drain and regenerated by replacing the oxygen. This
is done by introducing potassium permanganate to the media. The system comes
with the Potassium Permanganate container. With proper installation it
removes the following contaminants resulting in a healthier water. (removal
per cubic foot)
·
15 ppm of both ferric (oxidized) and ferrous (clear) iron
·
5 ppm of Hydrogen sulfide (rotten egg odor)
·
10 ppm of manganese
Note: These systems are
design for water supplies with pH between 6.2 and 8.8. If your water supply
has a pH of 6.1 or less, you need to neutralize pH before passing through
this system.
CALCULATING REMOVAL CAPACITIES:
Manganese Greensand filters are deigned for operation with intermittent regenerations. That is to say that they will treat a “batch” or calculated amount of water before regeneration will need to take place. It is important to remember to not allow the filter to reach complete exhaustion before regenerating.
Basing the removal capacity on a total combined
concentration of iron, manganese, and hydrogen sulfide, the following is a
typical example or template for deter- mining the approximate demand on a
greensand filter.
To calculate capacity:
Regenerated with 4 ounces (0.25 lbs.) of KMnO4, one cubic foot of manganese
greensand will yield about 10,000 ppm of removal.
To calculate demand:
To calculate gallons between regenerations per
cubic foot:
10,000 ppm capacity per cubic foot / 4.6 ppm demand = 2175 gallons.
**Cv-Flow
rate of valve alone at 1 psi pressure drop
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Birm Iron Filters
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The Birm Iron Filter efficiently removes iron where
hydrogen sulfide (rotten egg odor) is NOT present, organic matters do not
exceed 4 ppm and pH level is greater than 6.8 The Birm Iron filter will also
remove Manganese in applications where the Ph level is between 8 and 9.
Our Birm
Iron Filters can remove up to 10 ppm of both ferric (oxidized) and ferrous
(clear) iron and 5 ppm of manganese. Birm is an aluminum silicate media
coated with manganese dioxide. This coating is highly concentrated with
oxygen and acts as an insoluble catalyst to enhance the reaction between
dissolved oxygen and the the iron compounds. In essence, the dissolved iron
is oxidized at the surface of the media into a rust particle that can be
effectively filtered from the water. The precipitated iron and manganese can
then be easily removed from the system during backwash. No chemical
regeneration is required and nothing is imparted into the drinking water.
For Birm to
effectively remove iron, the pH of the raw water must be greater than 6.8. If
both Iron and Manganese are present, the pH should be between 7.5 and 8.5.
For Manganese removal the pH should be between 8.0 and 9.0 for best results.
The water
must have a dissolved oxygen content equal to at least 15% of the iron
content. Since many waters do not have a high content of dissolved oxygen, an
air injection system is recommended in conjunction with the Birm Filter for
most effective operation.
Operated
under proper conditions, the Birm Iron Backwash filter requires no chemical
for maintenance and regeneration is not required. Iron removal efficiency is
extremely high, with only periodic backwashing required. The Birm Filter
Media is a durable material with a long life and a wide temperature range.
**Cv-Flow rate of valve alone at 1 psi
pressure drop
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