Electrodialysis (ED) is a technology used for desalination of seawater. This process utilizes a stack of alternating anion- and cation-exchange membranes placed between two electrodes. When a DC voltage is applied, ions in the solution migrate through these selective membranes toward the oppositely charged electrode. This migration effectively separates the feed solution into a desalinated (dilute) stream and a concentrated (brine) stream. Common applications for electrodialysis include salt production via seawater concentration, food and pharmaceutical processing, regeneration of surface treatment solutions, and wastewater treatment.
A high-current DC power supply is used for electrodialysis.
