Water Softening and Demineralization


IONTEC softens or demineralizes water used for beverages or for other purposes (e. g. for heating, cooling, cleaning).

For ion exchange there are ion exchange resins in the unit. They contain loosely held cations or anions. These ions exchange with the ions in the treated water as it passes through the unit. For softening of water a resin containing Na+ is applied. The Ca++ and Mg++ ions which form hardness in water are exchanged for the Na+ ions of the resin. When most of the ions in the resin have been replaced the resin is exhausted and a regeneration cycle is initiated.

Regeneration with brine strips out Ca++ and Mg++ from the exhausted resin. For water demineralization all dissolved ions are removed from the water. Therefore, the water passes through a cation resin containing H+ to replace all cations and through an anion resin containing OH- to replace all anions. H+ and OH- then combine and form purified water.

Both resins can be in separate vessels or together in a single vessel (mixed bed design).

Typical Technical Data

  • Capacity

    265 - 79,200 gal/h (10 - 3,000 hl/h)

  • Material

    according to requirements (plastics; stainless steel)

  • Options

    duplex operation
    hardness measurement


  • All stainless steel execution as standard
  • Mixed bed design on demand for water demineralization
  • Customized design; different automation levels