How CEDI Works
As water enters the electro deionisation unit, it gets diverted to individual cells. A DC charge is then applied across the cells, separating water molecules into hydroxyl and hydrogen ions. These ions then pass through cation and anion membranes before entering the concentrate chamber. This is what allows the resin beds within to be continuously regenerated.
The water which passes through the system, otherwise known as dilute, is free of contaminants such as total dissolved colloids, chlorine and silica.
Advantages of Deionisation
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CEDI doesn’t require the extra steps of other treatment processes such as waste neutralisation and chemical regeneration -
Lower operating costs due to no need for chemical regeneration solutions to be purchased
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No maintenance or labour is necessary to operate this type of water treatment system
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CEDI units do not require two separate treatment units, reducing complexity, size, and overall system cost
Disadvantages of Deionisation
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Fouling and scaling can occur, as the system does not use regenerant chemicals that help keep other systems (such as membranes) free of debris -
High capital cost
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Must be fed with reverse osmosis (RO) water
Professional, Detailed, and Highly Recommended
Having an old De-Alk plant we were in a position to upgrade and went out to tender. Wychwood Water were one of the companies to respond, organising a full site visit and answering all questions fully and in great detail. The knowledge from Wychwood was second to none and any questions we had were quickly answered. Everything from the tender response to install went smoothly without any issues. I would definitely recommend Wychwood Water if you are looking for a comprehensive, professional company.”
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