Exchange Deionization Solutions are a simple, safe, and economical way to meet your high purity water treatment needs.



What is Deionized Water?

Deionization is the removal of ions through a filtering process. Therefore, Deionized Water is water that has had the ions removed. Ions are electrically charged atoms or molecules, which can be found in all natural water sources. Ions like sodium and cal
cium are present in soil and can mix with ground water.  Water can also “pick up” ions like iron and copper through contact with pipes.

Deionized Water, also called Demineralized Water or just DI Water, is created through an ion exchange process that uses resin to remove impurities from the water. These resin beads have exchange sites that attract positively and negatively charged ions. Regenerated cation resin will have Hydrogen (H+) ions attached to the cation resin beads, while regenerated anion resin will have Hydroxyl (OH-) attached to the anion resin beads. This ion exchange process works because resin beads have a definite selectivity for certain ions. For example, Cation resin beads have a greater affinity for Calcium than Hydrogen. Therefore cation resin will release Hydrogen ions into the water so that it may attract and hold calcium ions instead. Anion resin is more attracted to Chloride than Hydroxyl, so it will release Hydroxyl into the water in favor of the Chloride ion. The result is that undesirable ions or impurities attach to the resin beads, and Hydrogen and Hydroxyl is released into the water. These Hydrogen (H+) and Hydroxyl (OH-) ions combine to form H2O, or pure water.

Mar Cor Purification Service Deionization Solutions

Our systems are highly scalable and can be commissioned quickly at your facility.  Typical systems include activated carbon and ion exchange resins.