Vorrichtung zur Aufbereitung von metallhaltigen Flüssigkeiten durch Ionenaustausch und gleichzeitige oder periodische Regenerierung des Ionenaustauscherharzes durch Elektrodialyse

摘要

In appts. for treating esp. metal-contg. liqs. by ion exchange and simultaneously or periodically regenerating the ion exchange resin by electrodialysis, the novelty is that the treatment vessel (1) has, starting at the anode (2) and ending at the cathode (8), a series of equi-spaced ion exchangers (5) which are loaded with cation exchange resin (23) and which are delimited by cation exchange membrane separator walls (4, 4a). Anolyte (12)-and catholyte (13)-contg. chambers (3, 6) are located respectively before and after the ion exchangers (5) and adjacent chambers (3, 6) are separated by anion exchange membrane separator walls (7). The anodic chambers (3) are connected respectively to the compression and suction sides of a circulation pump (10), while the cathodic chambers (6) are series-connected and connected as a gp. to the compression and suction sides of a circulation pump (11). USE/ADVANTAGE - The appts. is useful for metal recovery from aq. solns. It allows metal recovery in solid form, is adaptable to different solns. and concns., has extremely low consumption of chemicals and wash water and allows ion exchanger regeneration without waste water prodn.