Abstract: Systems and methods for removing perchlorate load off of ion exchange resins are disclosed. The systems and methods rely upon direct contact between the resin and a liquid product formed by the culturing of perchlorate-destroying microorganisms. These methods can be incorporated into methods for removing perchlorate from aqueous streams. A resin product comprising an anion exchange resin with a coating of perchlorate-destroying microorganisms on its surface is also disclosed.
Type:
Grant
Filed:
December 3, 2007
Date of Patent:
December 16, 2008
Assignee:
Basin Water, Inc.
Inventors:
Janet A. Solomon, legal representative, Byung-Uk Bae, Gerald A. Guter
Abstract: Improved systems and methods for removing the load of perchlorate and other oxyanions off of ion exchange resins through bioregeneration are disclosed. The improved systems and methods rely upon direct contact between the resin and a liquid product containing enrichment cultures of or pure strains of perchlorate-destroying microorganisms. Controlled temperatures also lead to improvements as do upflow conditions leading to bed expansion. These methods can be incorporated into methods for removing perchlorate from aqueous streams.
Abstract: 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.
Type:
Grant
Filed:
April 20, 2006
Date of Patent:
April 22, 2008
Assignee:
Basin Water, Inc.
Inventors:
Peter L. Jensen, Gerald A. Guter, Dan Ziol
Abstract: Systems and methods for removing perchlorate load off of ion exchange resins are disclosed. The systems and methods rely upon direct contact between the resin and a liquid product formed by the culturing of perchlorate-destroying microorganisms. These methods can be incorporated into methods for removing perchlorate from aqueous streams. A resin product comprising an anion exchange resin with a coating of perchlorate-destroying microorganisms on its surface is also disclosed.
Type:
Grant
Filed:
February 26, 2004
Date of Patent:
December 25, 2007
Assignee:
Basin Water, Inc.
Inventors:
Janet A. Solomon, legal representative, Byung-Uk Bae, Gerald A. Guter, deceased
Abstract: Methods and systems for removing perchiorate from water are disclosed which involve the use of a plurality of vessels containing an ion exchange resin having affinity for perchiorate ions, and in which perchiorate-contaminated water is passed over the resin in some but not all of the plurality of vessels operating in parallel to one another thereby removing perchlorate ion from the water stream and generating reduced perchlorate content product water streams and in which a subset of the plurality of vessels is removed from service, their resin is removed and replaced and they are returned to service.
Type:
Grant
Filed:
September 1, 2005
Date of Patent:
December 18, 2007
Assignee:
Basin Water, Inc.
Inventors:
Peter L. Jensen, Bryan Zinn, John Zitlau
Abstract: 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 operation 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.
Type:
Grant
Filed:
March 21, 2005
Date of Patent:
May 9, 2006
Assignee:
Basin Water, Inc.
Inventors:
Peter L. Jensen, Gerald A. Guter, Dan Ziol
Abstract: An ion exchange process for removing arsenic from drinking water is disclosed which uses a mixed ion regenerant and generates minimal levels of waste.
Abstract: 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.
Type:
Grant
Filed:
October 25, 2001
Date of Patent:
April 12, 2005
Assignee:
Basin Water, Inc.
Inventors:
Peter L. Jensen, Gerald A. Guter, Dan Ziol