Demineralisation processes

When the process requires reduced levels of salts in the industrial water supply, it is advisable to further purify the feed water, by demineralisation with resins or reverse osmosis.

Demineralisation on resin “HRW process” :

While being based on the process of counter-current regeneration, BABCOCK WANSON has developed the "HRW" process which removes salts (and silica) by the provision of cationic and anionic resins (primary chain) and/or from mixed beds (final polishing).

The counter-current regeneration process presents many advantages in term of regenerating reagents consumption and quality of water produced :

• quality of the water produced with low conductivity and stable in time ;
• no suspension phase ;
• obtaining a water of constant quality over the duration of the cycle ;
• reduction in the volume of service water and thus in the volume of waste water ;
• reduction of the duration of regeneration and the quantity of reagents (-30 to 40%) ;
• reduction of the size of the installations.

Demineralisation by reverse osmosis :

This membrane technique makes possible the reduction of minerals in the water. It has the advantage of not using regenerating products (acid and bases). BABCOCK WANSON have developed a whole range of osmosis equipment, which makes it possible to meet and optimise the needs of industry.

To find out more about BABCOCK WANSON water demineralisation