2018 Web Catalog - Page 103



Calcite, Soda Ash
Suggested Retail
Description
Calcite
Acidic waters on contact with Calcite slowly dissolve the calcium
carbonate media to raise the pH which reduces the potential
leaching of copper, lead and other metals found in typical
plumbing systems. Periodic backwashing will prevent packing
and maintain high service rates. Depending on pH and service
flow, the Calcite bed will have to be periodically added to as the
dissolved calcite de­pletes.
As the Calcite’s calcium carbonate neutralizes the water, it will
increase hardness and a softener
may become necessary after
the neutralizing filter.
Advantages:
• High uniformity coefficient for maximum contact for controlled
pH correction
• Slower reacting
• Inexpensive
Physical Properties:
Color........................................................................................................................ Near White
Density..........................................................................................................100 lbs./cu. ft.
Composition......................................................................... CaCO3, 95% minimum
..................................................................................................... MgCO , 3.0% maximum
3
Conditions for Operation:
pH.................................................................................................................................................5 - 6
Bed Depth..............................................................................................................24 - 30 in.
Backwash Rate............................................................................... 8-12 gpm. sq. ft.
Backwash Bed Expansion..................................................35% of bed depth
Service Flow Rate................................... 3 -6 gpm/sq. ft. invariably give

satisfactory results but may be

modified in view of local conditions.
Resins, Media & Chemicals
Part Number
4
Calcite (for Acid Neutralization)
Pallet quantity - 56 bags per pallet
$
CAL-50-BAG
1/2 Cubic Foot Bag (50 lb.)
18.40
$
CAL-50-BOX
1/2 Cubic Foot Box
23.75
103
Soda Ash
Soda Ash injection is used if water is acidic (low pH). Soda ash
(sodium carbonate) raises the pH of water to near neutral when
injected into a water system. Unlike neutralizing filters, they do not
cause hardness problems in treated water. A corrosion-resistant
chemical feed pump should be used to inject a soda ash solution
into the water.
If the water needs to be disinfected as well as neutralized, dual
treatment is possible within the injection system by adding a
chlorine solution (sodium
hypochlorite) along with the
neutralizing chemical.
Soda ash can treat water with
a pH as low as 4.
The solubility of soda ash is dependent on temperature. The
following chart shows how much will stay in solution without
forming a precipitate in the solution tank, injector line and chemical
feed pump.
32ºF
0.58
Solubility of Soda Ash (Na2C03)
Pounds Per Gallon
50ºF
68ºF
1.04
1.79
86ºF
3.23
About 3 pounds of soda ash to 4 or 5 gallons of water is the
strongest solution that should be attempted. Soda ash has a
tendency to stop up feeder lines and check valves associated
with the chemical feed pump. Problems can be minimized by
keeping the solution mixture as weak as possible to get the pH
adjustment needed.
Soda Ash (for Acid Neutralization)
When injected into a water system with a chemical feed pump, soda ash will neutralize acid water
and eliminate corrosion problems. Also used as a cleaner for Tannin type water softeners.
$
ASH50
50 lb. Bag Soda Ash
91.00
$
ASH50-100-BOX
1 Cubic Foot Box
87.00
* Non-Stock Items. See “Terms and Conditions” for details.
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. ©2018 Nelsen Corporation

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