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How Does a Softener Remove Hardness from Water?

April 26, 2017remove softener water

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How Does a Softener Remove Hardness from Water?

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10 Posted

As the water passes through a water softening appliance containing a bed of resin, the hardness (calcium and magnesium) present in the water is exchanged or swapped for sodium in the resin. When the available sodium has all been exchanged for calcium and magnesium, hard water is present in the softener outlet and the resin must be regenerated. Common salt is used to replenish the supply of sodium in the resin and the hardness is flushed to waste.