Demineralization is concerned with the removal of all dissolved mineral matter from water.

Most common applications involved with demineralization are:

  • boiler feed water (BFW), to maintain high heat-transfer efficiency in the boiler by preventing deposition of precipitated scale and corrosion or deterioration of surfaces in contact with water; when a steam turbine is involved, a high degree of water purity, is mandatory to meet requirements of the turbine manufacturer,
  • pharmaceutical applications to comply with strict standards concerning the salt and microbiological content to be used in drugs preparation,
  • semiconductor/microelectronics industry to comply with very stringent specifications related to the miniaturization of the components,
  • chemical and petrochemical sectors as a process fluid,
  • food & beverage as a raw material in the preparation of the products.


Demineralization can be roughly outlined in two different steps:

  • deionisation that could be achieved through Ion Exchange or Reverse Osmosis often coupled with atmospheric or membrane degassing to remove the residual carbon dioxide;
  • polishing that features Mixed Bed Exchangers or Electrodeionization (EDI).

Cannon Artes can boast ample experience with ion exchange, membrane processes and polishing. This comes from designing a vast range of plants, and from answering the most varied problems in all the industrial sectors. Thus making Cannon Artes demineralization plants the norm in the evolution of water treatment.