scope:

This standard sets minimum requirements for ion-exchange membrane (IEM) systems such as electrodialysis (ED), electrodialysis reversal (EDR), electrodialysis metathesis (EDM), and electrodeionization (EDI) for water and reclaimed water treatment systems. Please note that the terms ion exchange and ion-exchange are used interchangeably with the terms ion transfer and ion-transfer in this document. Characteristics of ED/EDR membranes are compared to other types of membranes in Table 1.

Purpose 

The purpose of this standard is to provide a minimum set of requirements for IEM systems used for water and reclaimed water treatment systems. is standard is intended to assist with the design, procurement, installation, and commissioning of IEM systems.