Production of Table Salt:

Electrdialysis was first developed for the desalination of saline waters, in particular brackish water. The production of potable water is currently the most important industrial application of electrodialysis. One significant feature of electrodialysis is that the salts can be concentrated to comparatively high value (in excess of 18 to 20 %). The production of table salt from sea water by the use of electrodialysis to concentrate sodium chloride up to 200 grams per litre prior to evaporation is a technique developed extensively and used in Japan.