Electroregeneration apparatus and water treatment method
US8337686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jul 14, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/345
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water treatment apparatus that includes a cation exchange chamber containing a cation exchange resin and an anion exchange chamber containing an anion exchange resin. A bipolar interface is located between the resin chambers and defines a zone of water disassociation. A cathode communicates with the cation exchange chamber through a cation exchange membrane. An anode communicates with the anion exchange chamber through an anion exchange membrane. Dilution or flushing water flows through cathode and anode chambers and conveys captured ions to a drain or other waste connection. A baffle may be used in some configurations to divide a resin chamber into an exhausted resin region and a regenerated resin region and causes incoming water to flow through the exhausted resin region first. The exhausted resin region is located near its associated electrode, thus improving the electrical efficiency of the cell. In an alternate design, the apparatus includes a cathode/anode chamber, an anode chamber and an auxiliary electrode chamber disposed between the cathode/anode chamber and a cation exchange media chamber. An anion exchange membrane separates the cathode/anode chamber from the auxiliar…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.