SYSTEM DISINFECTION
23
Rev E
SYSTEM DISINFECTION
Disinfection Of Water Conditioners
The materials of construction of the modern water conditioner 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
Application
These materials are satisfactory for use with polystyrene resins, synthetic gel
zeolite, greensand 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
A. Polystyrene resin; 1.2 fluid ounce (35.5 ml) per cubic foot.
B. Non-resinous exchangers; 0.8 fluid ounce (23.7 ml) per cubic foot.
2. Brine 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.
*Clorox is a trademark of the Clorox Company.
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.
