Water desalination
Methods
Distillation Multi-stage flash distillation (MSF) Multiple-effect evaporator (MED|ME) Vapor-compression (VC) Ion exchange Membrane processes Electrodialysis reversal (EDR) Reverse osmosis (RO) Nanofiltration (NF) Membrane distillation (MD) Freezing Geothermal desalination Solar humidification (HDH, MEH) Methane hydrate crystallization High grade water recycling RF Induced Hyperthermia Seawater greenhouse

EDR desalination is an electrodialysis reversal water desalination membrane process that has been commercially used since the early 1960s. An electric current migrates dissolved salt ions, including fluorides, nitrates and sulfates, through an electrodialysis stack consisting of alternating layers of cationic and anionic ion exchange membranes. Periodically, the direction of ion flow is reversed by reversing the polarity applied electric current.

[edit] See also

• Reverse electrodialysis (RED)

[edit] Links and References

• U.S. Army Corps of Engineers Technical Manual
• Article: Water issues prompt new look at desalination
• GE: Electrodialysis reversal (EDR)

This technology-related article is a stub. You can help Wikipedia by expanding it. v • d • e