What is the process of regenerating ion exchange media in the sodium cycle called?

The process of regenerating ion exchange media in the sodium cycle is referred to as brining. This involves the introduction of a concentrated salt solution (typically sodium chloride) to the ion exchange resin. During this process, the resin, which has accumulated undesirable ions as it performs its function of exchanging ions in the water, is restored to its original capacity. The sodium ions from the brine solution replace the unwanted ions that the resin has collected.

Brining is essential for maintaining the efficiency of water treatment systems that employ ion exchange technology, particularly in the removal of hardness components like calcium and magnesium. The regeneration process ensures that the media can continue to serve its purpose effectively, allowing for the consistent production of softened water.

Other terms such as leaching, flushing, and recharging might relate to different processes in water treatment or other contexts, but they do not accurately describe the specific regeneration process used in ion exchange systems utilizing sodium.