How na can replace ca in regeneration of zeolite process?
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Zeolite process for water softening has become a commercial success for the reason that zeolite can be easily regenerated. When Ca2+ and Mg2+ ions containing hard water is passes through a bed of sodium zeolite, the sodium ions are replace by the calcium and magnesium ions.
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After some time, when the zeolite is completely changed into calcium and magnesium zeolites, then it gets exhausted (saturated with Ca+2 and Mg+2 ions) and it ceases to soften water. It can be regenerated and reused by treating it with a 10% brine (sodium chloride) solution.
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