Water Inc wi-hp9100-TS Upflou - Manual (Page 11)

DISINFECTION OF WATER
CONDITIONING SYSTEMS
The materials of construction in the modern water conditioning
system will not support bacterial growth, nor will these
materials contaminate a water supply. During normal use, a
conditioner may become fouled with organic matter, or in some
cases with bacteria from the water supply. This may result in
an off-taste or odor in the water.
Some conditioners may need to be disinfected after installation
and some conditioners will require periodic disinfection during
their normal life.
Depending upon the conditions of use, the style of conditioner,
the type of ion exchanger, and the disinfectant available, a
choice can be made among the following methods.
Sodium or Calcium Hypochlorite
These materials are satisfactory for use with polystyrene
resins, synthetic gel zeolite, and bentonites.
5.25% Sodium Hypochlorite
These solutions are available under trade names such as
Clorox. If stronger solutions are used, such as those sold for
commercial laundries, adjust the dosage accordingly.
1. Dosage
• Polystyrene resin; 1.2 fluid ounce (35.5 mL) per cubic
foot.
• Non-resinous exchangers; 0.8 fluid ounce (23.7 mL) per
cubic foot.
2. Regenerant tank conditioners
A. Backwash the conditioner and add the required
amount of hypochlorite solution to the well of the
regenerant tank. The regenerant tank should have
water in it to permit the solution to be carried into the
conditioner.
B. Proceed with the normal regeneration.
Calcium Hypochlorite
Calcium hypochlorite, 70% available chlorine, is available
in several forms including tablets and granules. These solid
materials may be used directly without dissolving before use.
1. Dosage
A. Two grains (approximately 0.1 ounce (3 mL) per
cubic foot.
2. Regenerant tank conditioners
A. Backwash the conditioner and add the required
amount of hypochlorite to the well of the regenerant
tank. The regenerant tank should have water in it
to permit the chlorine solution to be carried into the
conditioner.
B. Proceed with the normal regeneration.
9100 TS Upflow JA11 • 11