Abstract: The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floc inherently forms in the loaded extractant phase and then the loaded extractant phase and floc are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.
Type:
Grant
Filed:
April 7, 2017
Date of Patent:
December 3, 2019
Assignee:
Winner Water Services, Inc.
Inventors:
Bruce F. Monzyk, F. Michael Von Fahnestock, James K. Rose, H. Nick Conkle, Ming Wang, Satya P. Chauhan, Ruey K. Bruce, Tenisha Highsmith
Abstract: The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floc inherently forms in the loaded extractant phase and then the loaded extractant phase and floc are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.
Type:
Grant
Filed:
November 18, 2013
Date of Patent:
April 11, 2017
Assignee:
Winner Water Services, Inc.
Inventors:
Bruce F. Monzyk, F. Michael Von Fahnestock, James K. Rose, H. Nick Conkle, Ming Wang, Satya P. Chauhan, Ruey K. Bruce, Tenisha Highsmith
Abstract: The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floc inherently forms in the loaded extractant phase and then the loaded extractant phase and floc are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.
Type:
Grant
Filed:
February 14, 2008
Date of Patent:
November 19, 2013
Assignee:
Winner Water Services, Inc.
Inventors:
Bruce F. Monzyk, F. Michael Von Fahnestock, James Kevin Rose, H. Nick Conkle, Ming Wang, Satya P. Chauhan, Ruey K. Bruce, Tenisha Highsmith