The electrical efficiency of an electrically regenerated ion exchange system is improved by using elongated ion exchange members having a continuous ion exchange phase that is more conductive in the exhausted form than it is in the regenerated form. Preferably, the system includes anion exchange members...http://www.google.fr/patents/US4032452?utm_source=gb-gplus-shareBrevet US4032452 - Electrically regenerated ion exchange system
