The water softener must regenerate once the resin bed becomes saturated with calcium & magnesium ions – recharging the bed once again with sodium ions.
In downflow brining, we lose approx. 18% of our brine just from dilution in the freeboard and the size of the downflow injectors. Reference: Michaud C. (2002)
Downflow water softeners wash all the hardness & other debris through the clean portion of the bed – requiring it to be regenerated.
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