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
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 Cloroxa. 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.
•
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.
a. 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.
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