Patent ID: 8709225

Claim:
An electrodeionization device which enables a fluid flow pattern which directs ionic contaminants away from processing chambers which contain electrodes, said device consisting essentially of seven processing chambers and six ion exchange membranes, as follows: a) a cathode chamber 213 contiguous with a first cation membrane 212 ; b) an anode chamber 201 contiguous with a first anion membrane 202 ; c) a first mixed or doped bed 211 which is contiguous with said first cation membrane 212 and with a third anion membrane 210 ; d) a second mixed or doped bed 203 which is contiguous with said first anion membrane 202 and with a third cation membrane 204 ; e) an anion bed 209 which is contiguous with said third anion membrane 210 and with a second anion membrane 208 ; f) a cation bed 205 which is contiguous with said third cation membrane 204 and with a second cation membrane 206 ; and g) a central composite concentrate chamber 207 which is contiguous with said second cation membrane 206 and with said second anion membrane 208 .