Mixed bed system ion exchange column for ultrapure water

1.Description of Mixed bed system ion exchange column for ultrapure water

Calcium and magnesium ions are atoms having a positive electrical charge, as do sodium and potassium ions. Ions of the same charge can be exchanged. In the ion exchange process,a granular substance(usually a resin)that is coated with sodium or potassium ions comes into contact with water containing calcium and magnesium ions. Two positively charged sodium or potassium ions are exchanged (released into the water) for every calcium or magnesium ion that is held by the resin. This "exchange or trade"happens because sodium or potassium are loosely held by the resin. In this way, calcium and magnesium ions responsible for hardness are removed from the water, held by the resin,and replaced by sodium or potassium ions in the water. This process makes water"soft".Eventually, a point is reached when very few sodium or potassium ions remain on the resin, thus no more calcium or magnesium ions can be removed from the incoming water. The resin at this point is said to be"exhausted"or"spent",and must be"recharged"or"regenerated".

2.Flow chart of Mixed bed system ion exchange column for ultrapure water

3.Feature of Mixed bed system ion exchange column for ultrapure water