Model EDI Pure - Continuous ElectroDeionization Unit
From Technologies
Construction of CEDI Module
CEDI-modules consist of two diff erent functional type of compartments within a single stack. The product compartments as well as the reject compartments are fi lled with ion exchange resin and are located side by side, with cation and anion selective membranes in between. Feed water entering the CEDI stack fl ows parallel to the membrane surface and resin capture dis- solved ions.
Electric current drives captured cations through cation membranes and captured anions through anion membranes. The cation-permeable mem- branes prevent anions from leaving concentrating compartments and anion-permeable membranes prevent cations from leaving the concentrating compartments.
Specific Feature
NO chemicals needed for regeneration
Unlike traditional DI systems, CEDI unit does
NOT need acid or caustic chemicals for regeneration.
This results in safe operation and no need for hazardous waste or neutralization equipment.
Consistent ultra pure water
Due to the continuous electrical regeneration the resin never gets exhausted. Because of this phenomena
the product quality is consistent, week after week, month after month, without the necessity of taking the system out of operation.
Low operational costs
The CEDI unit can operate in continuous mode with low energy consumption and does not need any preventive maintenance.
Typical markets for EDIpure
- Industrial demineralized water
- High pressure boiler feed water
- Pure water injection in gas turbine
- Semi-conductor Industry
- Hospitals
- Universities
- Laboratory, central DI-water utility
- EDIpure
- Up to 7.600 l/h
- Typical Conductivity < 0,1 μS/cm
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