Electrodeionization device with protected electrodes
AssigneeTrovion Singapore Pte. Ltd., Co.
InventorJohn M. Riviello
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Abstract
The present invention relates generally to the deionization of liquids through the use of electrodeionization methods and apparatuses. The apparatuses may be configured to minimize the fouling of the electrode chambers and to provide continuous regeneration of the ion exchange materials. The apparatuses may be configured according to the desired levels of deionization for anions, cations, or both. Finally, methods are presented for various uses of the apparatuses.
Claims14
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.
Dependencies are inferred from the claim text.