Daico Electrodeionization (EDI) is the answer
in demanding applications that require consistent and economical
removal of water impurities without the use of hazardous chemicals.
EDI is a continuous process for producing high-purity water
using ion-exchange membranes, resins and electricity. Direct
current (DC) is the driving force for removing ionized
and ionizable species from the feed stream, while continuously
regenerating the resin pack. Basically, EDI is an electrodialysis
(ED) process modified by the addition of ion-exchange resin.
EDI, in combination with reverse osmosis as pretreatment,
strips away more than 99.9% of feedwater ions, significantly
outperforming both double-pass RO and straight DI. With lower
chemical, energy and labor costs, Daico's state-of-the-art
EDI technology is helping meet industry’s ultrapure
water needs today and well into the 21st century.
