TM 5-813-8
3
@ 56% ALK = 15.1 X 1.125 = 17.0 KGR/Ft
USE 0.8 EQUIPMENT FACTOR
3
17.0 x 0.8 = 13.6 KGR/Ft
DESIGN CAPACITY
Figure A-16. Amberlite IR-120 plus capacity correction for alkalinity.
When using 5-pound H2S04 (66 degrees Be) per cubic foot regeneration, the cation exchanger effluent will have
approximately zero calcium and magnesium, with a sodium leakage of 61 parts per million as indicated on Figure A-14.
The remaining cations are hydrogen as indicated.
The anions are not affected, with the exception of alkalinity, which is converted to carbon dioxide and water.
The next step in the treatment is blending sufficient raw water to neutralize the hydrogen ions in the cation effluent.
A-22
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