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Electrodeionization (EDI)
uses an electric field to remove ions and polar species from an aqueous
stream. EDI is used with reverse osmosis to replace ion-exchange resin
mixed beds (permanent or exchange-basis), which require chemical
regeneration either onsite or offsite.
The primary
environmental and economic benefit of EDI is the elimination of the use of
resin regeneration chemicals. The primary quality benefit of EDI is the
continuous process eliminates spikes and upsets.
Benefits
of EDI
· EDI produces
ultra pure water up to 18.1 megaohms
· EDI enables a simple system
· No regeneration chemicals required
· Single unit capacities from 0.05 m3/hr to 104 m3/hr
· Multiple unit arrays up to 200 m3/hr
· Compact and lightweight
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