The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to another as is required in moving bed ion exchange water purification systems. The invention combines features of single fixed bed ion exchange systems with those of a moving bed system. The invention applies to the treatment of water having typical industrial and drinking water concentrations of various ions.
"CROSS-REFERENCE TO RELATED PATENT APPLICATIONS"
This application is a continuation of and claims priority under 35 U.S.C. .sctn. 120 to U.S. application Ser. No. 11/085,961, filed Mar. 21, 2005 and now issued on May 9, 2006 as U.S. Pat. No. 7,041,223, which is a divisional of and claims priority under 35 U.S.C. .sctn. 120 to U.S. application Ser. No. 10/001,185, filed Oct. 25, 2001, and now issued on Apr. 12, 2005 as U.S. Pat. No. 6,878,286, which was an application which claimed benefit under 35 U.S.C. .sctn. 119(e) to U.S. Application Ser. No. 60/243,647, filed, Oct. 25, 2000. Each of these prior applications, including its respective priority and benefit claims, is incorporated herein by reference in its entirety.
