The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2006
Filed:
Sep. 14, 2001
Juzer Jangbarwala, Chino Hill, CA (US);
Juzer Jangbarwala, Chino Hill, CA (US);
The BOC Group, Inc., Murray Hill, NJ (US);
Abstract
The present invention provides a method and apparatus for purifying effluent wastewater utilizing electrophoretic cross-flow filtration and electrodeionization. The method first comprises filtering the water in a cross-flow direction with a filter membrane () in the presence of an electric field that is operative to drive suspended particles away from a surface of the filter membrane (). The permeate () containing dissolved solids is next passed through a mixture () of at least one cation-exchange resin and at least one anion-exchange resin disposed between a cation-selective membrane () and an anion-selective membrane () in the presence of an electric field. The electric field drives cations in the permeate through the cation-selective membrane (), and drives anions in the permeate through the anion-selective membrane (), thereby to form deionized water (). The apparatus includes cell modules adapted to be used in plate-and-frame or radial flow configurations.