Kenneth Ray Workman

US Patent:

8206592, Jun 26, 2012

Filed:

Dec 15, 2005

Appl. No.:

11/303160

Inventors:

John F. Bossler - Edwardsburg MI, US
Hari Bhushan Gupta - Schaumburg IL, US
Kenneth R. Workman - Hoffman Estates IL, US
Jospeh C. Jimerson - Conroe TX, US

Assignee:

Siemens Industry, Inc. - Alpharetta GA

International Classification:

B01D 61/00

US Classification:

210639, 210201, 210203, 2101952, 210652, 210259, 210806

Abstract:

The invention relates to systems and methods of treating water by directing the water to a first reverse osmosis (RO) membrane; separating the water using the first RO membrane; adding a chelating agent to first permeate and/or raising the pH of the first permeate to between about 5. 5 and 7. 5 before a second RO membrane; and separating the first permeate into a second permeate and a second concentrate using the second RO membrane, thereby separating constituents from the water.

US Patent:

20120325745, Dec 27, 2012

Filed:

Jun 22, 2012

Appl. No.:

13/530948

Inventors:

John F. Bossler - Edwardsburg MI, US
Hari Bhushan Gupta - Schaumburg IL, US
Kenneth R. Workman - Hoffman Estates IL, US
Jospeh C. Jimerson - Conroe TX, US

International Classification:

C02F 9/08
C02F 9/04
C02F 1/42
C02F 1/52
C02F 1/44
C02F 1/66

US Classification:

210639, 210202

Abstract:

The invention relates to systems and methods of treating water by directing the water to a first reverse osmosis (RO) membrane; separating the water using the first RO membrane; adding a chelating agent to first permeate and/or raising the pH of the first permeate to between about 5.5 and 7.5 before a second RO membrane; and separating the first permeate into a second permeate and a second concentrate using the second RO membrane, thereby separating constituents from the water.

US Patent:

20200377386, Dec 3, 2020

Filed:

Aug 18, 2020

Appl. No.:

16/996277

Inventors:

- Pittsburgh PA, US
Justin W. Higgs - Nolensville TN, US
Kenneth Ray Workman - Autryville NC, US

Assignee:

Evoqua Water Technologies LLC - Pittsburgh PA

International Classification:

C02F 1/42
C02F 1/44
C02F 1/66
C01B 25/18
C01B 25/234
C02F 1/00
C02F 1/04

Abstract:

A method of recovering phosphoric acid from process water includes directing a process water stream having a pH and a first concentration of phosphoric acid and at least one salt into a vessel, contacting the process water stream with a sorption agent in the vessel, the sorption agent adsorbing phosphoric acid from the process water, withdrawing a first effluent including a first concentration of the at least one salt and a second concentration of phosphoric acid from the vessel, and contacting the sorption agent including the phosphoric acid with water, at least a portion of the phosphoric acid desorbing from the ion exchange media into the water to form a second effluent having a third concentration of phosphoric acid.

US Patent:

20170015568, Jan 19, 2017

Filed:

Mar 6, 2015

Appl. No.:

15/124564

Inventors:

- Warrendale PA, US
Justin W. Higgs - Nolensville TN, US
Kenneth Ray Workman - Autryville NC, US

International Classification:

C02F 1/42
C01B 25/234
C02F 1/04
C02F 1/66
C02F 1/00
C02F 1/44

Abstract:

A method of recovering phosphoric acid from process water includes directing a process water stream having a pH and a first concentration of phosphoric acid and at least one salt into a vessel, contacting the process water stream with a sorption agent in the vessel, the sorption agent adsorbing phosphoric acid from the process water, withdrawing a first effluent including a first concentration of the at least one salt and a second concentration of phosphoric acid from the vessel, and contacting the sorption agent including the phosphoric acid with water, at least a portion of the phosphoric acid desorbing from the ion exchange media into the water to form a second effluent having a third concentration of phosphoric acid.