Electrodeionization (EDI) is a widely used water treatment process. EDI technology
is an electrochemical process that uses ion selective membranes and an electrical
current to continuously remove ions from water. The process uses ion exchange
resin to remove the ions from the feed stream, producing pure water. A DC current
continuously regenerates the resin.
This technology operates under the same principles as conventional ion exchange
resin technology with the added benefit of being a continuous process free of
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