Continuous Electrodeionisation (CEDI)
EDI system combining ion exchange resins and ion-selective membranes with a current for high-purity water production.
Continuous electrodeionisation (CEDI) is a water treatment electrodeionisation technology that combines ion exchange resins and ion-selective membranes with direct current to remove ionised species from water. Reverse osmosis (and sometimes membrane degassing) is typically used as a pre-treatment prior to CEDI to ensure that the CEDI stack is not overloaded with high levels of salts. The CEDI technique can achieve very high-purity water, with conductivity below 0.1 µS/cm.
- Chemical-free water treatment
- No regeneration downtime for continuous flow with consistent water quality
- Skid-mounted, standardised systems for short lead times, quick installation and startup
- Up to eight CEDI modules per skid for flexibility and high flow rates