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.