Creating demineralised water is achieved through a deionisation process. Our range of deionisers can be used as stand-alone units for small water flow applications such a laboratories or producing demineralised water for metal finishing applications. Treating larger water flows, we use our deionisers in combination with our reverse osmosis technologies providing a downstream polishing stage to deliver cost-effective pure demineralised water.

Our deionisers use ion exchange resins and you can choose from a range of units that will automatically regenerate the resin when it is saturated. Alternatively for small water flows our portable exchange deionisers (PEDI) provide a low capital cost alternative with service options including our skilled engineers who can replace exhausted resins to keep your system operational.

Deionisation – Ion Exchange Water Treatment Systems

EDI - Commercial and Industrial water treatment - Culligan

Continuous Electro-deionization (CEDI)

CEDI process reduces ions from water using electricity, resin and membranes, decreasing the need for chemicals. CEDI is used as a polishing process to further deionise Reverse Osmosis permeate to multi megaohm-cm quality water. Models are available for up to 13m3/hr flow rate.

Deyolit NRC - Commercial and Industrial water treatment - Culligan

Automatic Deionization

Fully automated demineralisation units designed for flows up to 40m3/hr. Choose from a flexible configuration of weak base or strong base resin tanks. Deyolit series deionizers are equiped with a control system designed to monitor the process & automatically initiate regeneration when water quality deteriorates to a pre-determined limit.

Refill line - Commercial and Industrial water treatment - Culligan

Portable Exchange Deionizers (PEDI)

For installations where regeneration systems are not appropriate, replaceable portable exchange deionisers (PEDI) are an great solution. Suitable for a wide range of flow rates (up to 500 L/hr), Culligan PEDI systems reduce both positively and negatively charged ions from water by means of ion exchange resins. When your PEDI tanks are exhausted, a Culligan service technician can replace your ion exchange tanks at your convenience. This type of system can reduce capital costs as well as handling of regenerate chemicals such as caustic and acids.