Wastewater Reclamation
Home
Technology
Wastewater Reclamation

Electrodialysis Reversal (EDR)

Electrodialysis Reversal (EDR)
Introduction

Electrodialysis reversal can effectively remove ions from water and wastewater by applying a direct current and reversing the polarity of electrodes periodically. The electric charge drives the ions penetrating anion or cation exchange membranes. EDR reduces conductivity and dissolved solids of bulk solution.  
 

 

Schematic diagram of EDR
More Information

Applications
• Desalination of RO concentrate
• Reclamation of Cooling tower condensate
• Desalination of Salty groundwater
• Treatment of City water
• Reclamation of Wastewater

 

Features
• Water softening without chemical addition
• Removal of sodium, chloride, calcium, magnesium, sulfate and nitrate from water
• Capable of treating low-grade influent with SDI<15
• High water recovery rate
• High desalination efficiency

 

Patents
• TW I232772, I310451, I356043, I359114
• CN ZL200310121844.3, ZL200810001610.8
• SG 120986 

 

 

EDR system for river water desalination (2400 m3/d )

 

 

 

EDR system for wastewater desalination (400 m3/d)


Full-Scale Applications of EDR

 

 

Contact

Mr. Liao, Chi-Chung
Tel : 886-3-5732974
Fax : 886-3-5732349
E-mail : ChiChungLiao@itri.org.tw

BACK
Technology