Auto Electric Cell Automatic EDI Module Deionized Water
Ionpure EDI Module for Ultrapure Water for Lab Use
Electrodeionization (EDI) is a process that uses ion exchange resins to absorb ions from a dilute water stream and then transports the absorbed ions through ion-exchange membranes into a concentrate water stream under the influence of an applied electro field. In the process,ion exchange resins do not need to regeneration via acid or alkali. This new technology could replace traditional Electrode ionization (DI) equipment, product ultrapure water whose resistance up to 18 MΩ·cm.
A mixed bed ion exchange unit has to be regenerated by using acid and alkali, but an EDI system does not need such a process. This is the fundamental advantage of EDI technology over the conventional ion exchange technology. However, this advantage can be expressed into other aspects as listed below.
1. EDI process does not consume regeneration chemicals.
2. EDI process does not create waste water and much more environmental.
3. EDI systems do not require shutdown for regeneration.
4. EDI systems are smaller than mix bed ion exchange units.
5. EDI process provides water of consistent quality.
6. Operating expenses are lower than ion exchange units.
EDI typically may be used in any applications that require ultrapure water at a resistivity above 1 MΩ·cm. The typical industries that use ultrapure water include:
1. Microelectronic and semiconductor production.
2. Pharmaceutical and biomedical industries.
3. Chemical production.
4. High pressure boiler such as the ones in power plants
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