Electrodialysis Equipment

Electrodialysis is electrically driven ion-exchange utilizing alternating sequences of cation membranes and anion membranes. Conventional ion-exchange techniques involve the "adsorptive exchange" of an ion in a solution with an ion attached to the functional group of the resin head.

Application:

  • Desalination of closed-loop process water
  • Recovery of metal salts
  • Potable water production

Benefits:

  • Maintenance of high-quality process water
  • Recovery of valuable resources
  • Reduced waste treatment and waste disposal
  • No regeneration required

Donnan/Diffusion Dialysis

Donnan/diffusion dialysis is a little known alternative to conventional ion exchange techniques. Using perm-selective ion exchange membranes specific cations or anions can be targeted for removal and concentration.

Application:

  • De ionization of closed-loop process water
  • Recovery of metals from low concentration
  • Non additive pH adjustments
  • Separation of monovalent ions from multivalent ions

Benefits:

  • Maintenance of high quality process water
  • Recovery of valuable resources
  • Reduced waste treatment and waste disposal
  • No resin regeneration required
  • Generate desired cation/anion complexes