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:
Jan. 25, 2011
Filed:
Nov. 23, 2005
Edward Coppola, Panama City, FL (US);
John Baxley, Lynn Haven, FL (US);
Andrea Davis, Panama City, FL (US);
Francis Boodoo, King of Prussia, PA (US);
William Fries, Warminster, PA (US);
James Dale, Cardiff, GB;
Edward Coppola, Panama City, FL (US);
John Baxley, Lynn Haven, FL (US);
Andrea Davis, Panama City, FL (US);
Francis Boodoo, King of Prussia, PA (US);
William Fries, Warminster, PA (US);
James Dale, Cardiff, GB;
Applied Research Associates, Inc., Albuquerque, NM (US);
Brotech Corporation, Bala Cynwyd, PA (US);
Abstract
The invention consists of a water treatment process using selective and regenerable weak base anion exchange resins to remove any number of complex anions, especially oxyanions including perchlorate, nitrate, chlorate, arsenate, selenate, and chromate, from aqueous solutions. The treatment process is comprised of three key processes including 1) pretreatment to lower pH, 2) ion exchange, and 3) post treatment to adjust pH and alkalinity. The invention also includes processes for regenerating weak base anion resins and treatment of the residuals generated. This invention employs pressurized treatment, carbon dioxide management, and reuse of regenerating solution to minimize pumping and treatment costs.