Electrodeionization EDI

Customers who need ultrapure water rely on electrodeionization (EDI). Our EDI system provides key advantages over traditional ion-exchange processes:
– Eliminating expensive and hazardous chemicals used in ion-exchange resin regeneration
– Reducing energy and operating expenses
– Reducing energy and operating expenses
– Reducing the facility size requirement
– Helping plants meet ISO 14000 requirements
EDI systems cover many applications including power generation, microelectronics, food and beverage production, and chemical and pharmaceutical manufacturing. Using high-capacity ion exchange membranes, our EDI system removes not only residual salts but also ionizible aqueous species such as carbon dioxide, silica, ammonia and boron.
The heart of the process is a stack of components similar to a plate and frame heat exchanger or filter press.
Feedwater flows in a thin sheet between ion exchange membranes through the stack, where a DC electrical field drives salt ions into adjacent concentrating compartments.