MARLO MATD 9500 XT, Manual

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4
RECOMMENDED TYPES OF SALT
Only purified salt should be used in the brining system. Palletized salt (“Button”, “Nugget”, and
“Pellet”) or block salt (free binders) is recommended. Do
not
use granulated salt, as it will fall
through the platform screen.
Rock salt is not normally recommended. Most rock salt contains sludge-forming insoluble that
collect on the platform and prevents proper salt-water contact.
Only salt containing 0.5% or less of insolubles will provide continued satisfactory operation. If,
salt with more insolubles is used, the brine maker will require periodic cleaning.
DEALKALIZATION EXAMPLE CALCULATION
The Water Analysis
Total Alkalinity as CaCO
3
200 ppm
Chloride as Cl 100 ppm x1.41 141 ppm
Sulfate as SO, 5 ppm x 0 52 ppm as CaCO
3
TDS as CaCO
3
400 ppm
pH 7.8
Total Hardness as CaCO3 350 ppm
SALT REGENERATION
1. The water should be softened prior to dealkalization.
2. The percentage of alkalinity as a function of total anions.
T.A. T.A. Cl SO,
{ 200 / ( 200 + 141 + 52 ) ] x 100 = 51%
T.A. = Total Alkalinity
Cl = Chloride
SO
4
= Sulfate
3. Convert ppm as CaCO3 to grains / gallon.
200 / 17.1 = 11.7 grains / gallon
17.1 is a constant that converts ppm to grains / gallon
4. From the capacity chart Figure 1 for Ionac ASB-2 using 50% alkalinity and 400 TDS the
capacity is approximately 5 kgr / cu.ft.
This should be downgraded by 10%. 5 kgr x .9 = 4.5 kgr / cu.ft. 5.
5 .To calculate the throughput capacity
(4.5 kgr x 1000) / 11.7 grains / gallon = 385 gallons / cu.ft.
6. Leakage will be approximately 10% of the influent alkalinity or 20 ppm as CaCO
3
salt and
caustic regeneration.