Ion-exchange device and regeneration method of ion-exchange material thereof

An electrochemical assembly, comprising:

• a casing including at least one inlet for inducing a feed stream to be de-ionized and at least one outlet for exiting of a dilute stream during a deionization stage;
• a plurality of composite ion-exchange members arranged in parallel in the casing, and defining a plurality of compartments between every two adjacent composite ion-exchange members, the plurality of composite ion-exchange members comprising at least one bipolar composite member between two compartments, the bipoar member comprising at least one conductive base, a cation-exchange material on one side, and an anion-exchange material on the other side;
• and
• a control device configured to transmit a current at a regeneration stage in a manner that the conductive base on the cation-exchange side of the bipolar composite member loses electrons and the conductive base on the anion-exchange side of the bipolar composite member gains electrons.

An electrochemical process comprising:

• a deionization stage comprising:
• introducing a feed stream into a compartment;
• absorbing dissolved cations or anions on an ion-exchange material;
• and
• exiting a dilute stream out of the compartment;
• and
• a regeneration stage comprising:
• physically contacting the ion-exchange material to a conductive base;
• and
• exerting an electrical current to a conductive base, and causing the conductive base to lose electrons to expel anions absorbed on the ion-exchange material, or causing the conductive base to gain electrons to expel cations absorbed on the ion exchange material.