Ion exchange

Operating principle

The ion exchange process allows the selective extraction of salts from water: softening, decarbonation, demineralization.
Once correctly prefiltered, the raw water feeds under pressure the ion exchange line which may include the following units:

  • Cation exchanger
  • Gas remover
  • Anion exchanger(s)
  • Polishing ion exchanger

Ion exchange
Ion exchange

According to the needed performances (water quality, reagent consumption), co-current, counter-current or mixed-bed process is implemented.
The generated eluates are neutralized before disposal.



  • High quality demineralised process water (resistivity up to 18 MO hms)
  • Process adapted to every flow rate
  • Completely automatic installations
  • Optimized regeneration reagent consumption