Gregory Todd Simpson

US Patent:

6440314, Aug 27, 2002

Filed:

Jan 3, 2001

Appl. No.:

09/753891

Inventors:

Gregory D. Simpson - Seabrook TX

Assignee:

Vulcan Chemical Technologies, Inc. - West Sacramento CA

International Classification:

C02F 170

US Classification:

210757, 210911

Abstract:

Ascorbic acid or one of its isomers, such as erythorbic acid is added in sufficient quantities to a chlorite-containing solution to rid the solution of chlorite. Sufficient ascorbic acid is added to the chlorite-containing solution to convert the chlorite to chloride. Industrial processes employing this process are disclosed.

US Patent:

7285217, Oct 23, 2007

Filed:

Nov 17, 2004

Appl. No.:

10/991054

Inventors:

Gregory D. Simpson - Seabrook TX, US
Glenn W. Holden - Spring TX, US

Assignee:

Siemens Water Technologies Corp. - Warrendale PA

International Classification:

C02F 3/00

US Classification:

210611, 210754, 210756, 210759, 210757, 210916

Abstract:

A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating compound, which both decreases the amount of gaseous HS and puts the aqueous phase into a pH range where naturally occurring bacteria can more easily metabolize the sulfide. The composition also includes one or more nitrate salts which will accomplish longer term prevention of odors. Specific bacteria are incorporated into the formulation to insure that the nitrate has the right type and amount of bacteria present to prevent formation of and/or consume sulfide. Specific enzymes are incorporated into the formulation to promote oxidation of sulfide.

US Patent:

7384565, Jun 10, 2008

Filed:

Oct 11, 2005

Appl. No.:

11/247858

Inventors:

Glenn W. Holden - Spring TX, US
Gregory D. Simpson - Seabrook TX, US

Assignee:

Siemens Water Technologies Corp. - Warrendale PA

International Classification:

C02F 9/04

US Classification:

210754, 210757

Abstract:

The invention is directed to a process for removing chlorite ion from a body of water containing unacceptably high levels of chlorite comprising adding to said body of water a chlorite removal chemical selected from the group comprising sodium dichloroisocyanurate dihydrate, sodium dichloroisocyanurate, trichloroisocyanurate, polyaluminum chloride, sodium permanganate, potassium permanganate, and catalase enzyme.

US Patent:

7553420, Jun 30, 2009

Filed:

Sep 21, 2007

Appl. No.:

11/859421

Inventors:

Gregory D. Simpson - Seabrook TX, US
Glenn W. Holden - Spring TX, US

Assignee:

Siemens Water Technologies Corp. - Warrendale PA

International Classification:

C01F 3/00

US Classification:

210611, 210754, 210756, 210757, 210759, 210916

Abstract:

A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating compound, which both decreases the amount of gaseous HS and puts the aqueous phase into a pH range where naturally occurring bacteria can more easily metabolize the sulfide. The composition also includes one or more nitrate salts which will accomplish longer term prevention of odors. Specific bacteria are incorporated into the formulation to insure that the nitrate has the right type and amount of bacteria present to prevent formation of and/or consume sulfide. Specific enzymes are incorporated into the formulation to promote oxidation of sulfide.

US Patent:

7972532, Jul 5, 2011

Filed:

May 15, 2009

Appl. No.:

12/466799

Inventors:

Gregory D. Simpson - Seabrook TX, US
Glenn W. Holden - Spring TX, US

Assignee:

Siemens Industry, Inc. - Alpharetta GA

International Classification:

C02F 5/02

US Classification:

252175, 210916

Abstract:

A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating compound, which both decreases the amount of gaseous HS and puts the aqueous phase into a pH range where naturally occurring bacteria can more easily metabolize the sulfide. The composition also includes one or more nitrate salts which will accomplish longer term prevention of odors. Specific bacteria are incorporated into the formulation to insure that the nitrate has the right type and amount of bacteria present to prevent formation of and/or consume sulfide. Specific enzymes are incorporated into the formulation to promote oxidation of sulfide.

US Patent:

20060006121, Jan 12, 2006

Filed:

Sep 28, 2005

Appl. No.:

11/177006

Inventors:

Gregory Simpson - Seabrook TX, US
Glenn Holden - Spring TX, US

International Classification:

C02F 1/58

US Classification:

210749000, 210916000

Abstract:

A synergistic composition and method is provided for controlling odor from waste products. The composition comprises a combination of magnesium hydroxide and a sulfide-consuming compound. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating and buffering compound, which both increases and buffers the pH. The increased pH serves to reduce both the volatile sulfide species and the volatile fatty acid (VFAs) species. The elevated pH also promotes the growth of naturally occurring bacteria which metabolize the sulfide to an innocuous form. Finally, addition of the composition drives the pH into a range where the growth of sulfide producing bacteria is inhibited. The mixture has surprisingly been found to be synergistic with respect to both control of chemical species that produce odors and corrosion of metals commonly found in sludge dewatering equipment.

US Patent:

20080152580, Jun 26, 2008

Filed:

Nov 21, 2005

Appl. No.:

11/667746

Inventors:

Gregory D. Simpson - Seabrook TX, US

International Classification:

C01B 11/02
B01J 19/00

US Classification:

423477, 422189

Abstract:

A method for producing chlorine dioxide at rates of from a few pounds per day to several hundred pounds per day. A very simple, fixed capacity, educator-based () chlorine dioxide generator with booster pump () which provides a constant and precise motive water flow through the educator (). The mixing of precursors is accomplished by educator vacuum pulling the precursors together through separate, but identical fixed diameter flow restrictors (-). Precursors flow together in a specified manner and into a reaction column () occupied by a static mixer () to provide more intimate mixing. Production of small quantities is accomplished by operating the generator in a pulsed mode, via a timer ().

US Patent:

61715581, Jan 9, 2001

Filed:

Jun 24, 1999

Appl. No.:

9/338951

Inventors:

Gregory D. Simpson - Deer Park TX

International Classification:

B01J 1912

US Classification:

4221863

Abstract:

A generator for continuously creating chlorine dioxide. A lamp is positioned in a container holding aqueous chlorite, and the aqueous chlorite is circulated through a circulation tube. A shield reduces contact between the lamp radiation and the aqueous chlorite outside of the circulation tube. The aqueous chlorite in the circulation tube is irradiated by the lamp to generate chlorine dioxide. The chlorine dioxide can be removed from the container with an vacuum eductor or can be transported with a gas sparge. Continuous production of the chlorine dioxide can be monitored and controlled with a control module which detects the quantity of chlorine dioxide generated. The generator reduces safety hazards associated with the handling of chlorite solutions and provides an inexpensive, portable system for the in situ generation of chlorine dioxide.