This second edition of AWWA Manual M38 provides detailed information on the classical electrodialysis (ED) and the electrodialysis reversal (EDR) processes and systems. ED and EDR systems employ electrochemical and membrane cell technologies to separate ionic materials in aqueous solutions. These systems have proven useful in food processing, medical applications, and other specialized industrial uses, with major applications being the production of drinking water or pure industrial process water from brackish, saline, or mineralized sources.
Directed to engineers and operators of ED and EDR systems, this manual provides detailed background information on ED and EDR as they relate to water treatment processes. The manual explains process principles, equipment information, electrodialysis technology, and system design. Information on water chemistry is included to enhance understanding of water processing. It is hoped that this manual will also assist water process engineers and treatment plant decision makers in understanding the value of ED and EDR technology applied to their water treatment needs.