Electro De Ionization

Electro De Ionization

The CDI-LX continuously provides high purity water whilst withstanding hundreds of hot water sanitization cycles. By applying voltage across chambers of cat ion and anion resins, regeneration is continuous and chemical free. The patented design of resin filled concentrate cells eliminates the need for additional consumption and avoids the disadvantages of brine infusion.

Electrodeionization (EDI) is usually considered a water treatment technology that utilizes an electrode to ionize water molecules and separate dissolved ions (impurities) from water. It differs from other water purification technologies in that it is done without the use of chemicals and is usually a tertiary treatment to reverse osmosis (RO).


An important application for electrodeionization is the production of pure water and ultra pure water. In EDI, the purifying compartments and sometimes the concentrating compartments of the electrodialysis stack are filled with ion exchange resin. When fed with low TDS feed (e.g., feed purified by RO), the product can reach very high purity levels