Abstract: Methods are described for monitoring biofouling in a closed water system. For example, a method includes adding nitrate to water circulating in the closed water system, and detecting whether nitrite is present in the water after adding the nitrate. Another method includes introducing chlorite into water circulating in the closed water system, the detecting the amount of chlorite present in the water; and at least one of (i) comparing the detected amount of chlorite to an expected amount of chlorite; and (ii) observing whether the amount of chlorite in the water decreases over time.
Abstract: Systems and methods for controlling a chloramine synthesis reaction. The system includes at least one water pump configured to deliver a first water stream to a first junction where the first water stream is mixed with a first solution including an ammonium compound, and a second water stream to a second junction where the second water stream is mixed with a second solution including hypochlorite, a reaction chamber downstream of the first and second junctions which is configured to mix the first and second water streams in order to react the ammonium compound and the hypochlorite to form chloramine, an optical measurement device disposed upstream of the second junction, the optical measurement device configured to measure an absorbance of the hypochlorite in the second solution, and at least one controller programmed to determine a concentration of the hypochlorite in the second solution based on the measured absorbance.
Type:
Grant
Filed:
April 9, 2020
Date of Patent:
January 25, 2022
Assignee:
CHEMTREAT, INC.
Inventors:
Christopher Baron, Joseph Konefal, Blaine Nagao
Abstract: Methods and systems are provided for removing calcite deposits by contacting polysuccinimide with water to dissolve the polysuccinimide and supplying the dissolved polysuccinimide to surfaces fouled with the calcite deposits. The pH of the water that dissolves the polysuccinimide can be adjusted based on the amount of calcium in the water. Adjusting the pH will affect the dissolution rate of the polysuccinimide in water and the rate of removal of the calcite deposits.
Type:
Grant
Filed:
September 12, 2019
Date of Patent:
January 25, 2022
Assignee:
CHEMTREAT, INC.
Inventors:
Kevin Michael Gottschalk, Phil Godsave, Raymond M Post, Robert W. Bedinger
Abstract: A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.
Type:
Application
Filed:
September 1, 2021
Publication date:
December 23, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
Joseph S. STRASSER, Joseph M. HAMNIK, James R. LAWSON, Alan J. FELLER
Abstract: A method for applying a chemical treatment solution to a process stream in an industrial processing system while the system is online. The method includes measuring a mineral hardness and alkalinity of the process stream, determining a dosage of the chemical treatment solution based on a relationship between the dosage and a scale saturation parameter that is calculated based on the mineral hardness and the alkalinity of the process stream, and controlling application of the chemical treatment solution to the process stream based on the determined dosage.
Type:
Application
Filed:
November 24, 2020
Publication date:
October 28, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
Kevin BOUDREAUX, Bill GONZALEZ, Kerry KILLOUGH
Abstract: Methods and systems are described for treating water in a water system that includes a biofilm with acid-producing bacteria. The biofilm can be treated, reduced, or eliminated by adding chlorite to the water and reacting the chlorite with acid generated by the acid-producing bacteria to form chlorine dioxide. The chlorine dioxide is thus formed in situ localized to the biofilm, and can be effective to kill bacteria in the biofilm.
Type:
Application
Filed:
December 30, 2020
Publication date:
October 14, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
Chris D. BARON, Jeffrey M. DOTSON, Jon J. COHEN
Abstract: A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.
Type:
Grant
Filed:
May 11, 2020
Date of Patent:
October 5, 2021
Assignee:
CHEMTREAT, INC.
Inventors:
Joseph S. Strasser, Joseph M. Hamnik, James R. Lawson, Alan J. Feller
Abstract: A method and system for cleaning a beverage filler. The method and system includes storing a cleaning solution, and delivering the cleaning solution to the filler via a nozzle arrangement configured to distribute the cleaning solution to clean a portion of the filler. The cleaning solution is delivered to the filler during online operation of the filler.
Type:
Application
Filed:
December 30, 2020
Publication date:
September 30, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
David LOPICCOLO, Victor MERINO, Rick BRUNDAGE
Abstract: Methods are described that reduce the amount of organic matter in water, including reducing an amount of total organic carbon in water. The method includes adding powder activated carbon to the water; mixing the powder activated carbon in the water; and separating the powder activated carbon from the water. Also described are a method for reducing glycol content in water containing glycols, and a method for reducing glycol content in a steel mill wastewater stream containing glycols.
Abstract: Methods and compositions are described that remove chlorine from a chlorine-containing gas stream. The method includes adding a carbonate salt and optionally a scale inhibitor to a scrubbing liquid in a wet scrubbing system, and contacting the chlorine-containing gas with the scrubbing liquid. The amount of carbonate salt that is added can vary depending on the pH of the scrubbing liquid.
Type:
Application
Filed:
June 28, 2019
Publication date:
August 19, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
William BROWN, Douglas GODWIN, Travis SCOPER
Abstract: Methods for treating water containing a target anion to remove the target anion can include preparing a treatment composition solution that contains a metal treatment agent, adjusting the treatment composition solution to a first pH that is alkaline and then to a second pH that is acidic, and contacting the treatment composition solution with the water that contains the target anion.
Type:
Application
Filed:
February 3, 2020
Publication date:
August 5, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
Vladimir DJUKANOVIC, Nicholas SEYMOUR, William HENDERSON, Oleh WERES
Abstract: Methods and systems are described for providing improved food processing systems by treating wash water in a wash stage of the food processing system with a biocide. Sufficient biocide may be added to significantly reduce the levels of bacteria in the wash stage, which can prevent problems associated with bacteria in downstream processes.
Type:
Application
Filed:
April 22, 2021
Publication date:
August 5, 2021
Applicant:
CHEMTREAT, INC.
Inventors:
John K. BURCHTORF, William HENDERSON, Daniel MARSH
Abstract: Methods are disclosed for treating water containing a target anion to remove the target anion. The methods can include preparing a treatment composition solution that contains a metal treatment agent, adjusting the treatment composition solution to a first pH that is alkaline and then to a second pH that is acidic, and contacting the treatment composition solution with the water that contains the target anion.
Type:
Grant
Filed:
February 3, 2020
Date of Patent:
July 20, 2021
Assignee:
CHEMTREAT, INC.
Inventors:
Vladimir Djukanovic, Nicholas Seymour, William Henderson, Oleh Weres
Abstract: A method for cooling furnace electrodes using a cooling liquid containing surfactants. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby lowering the temperature of the electrode and reducing electrode consumption.
Abstract: Methods and systems for detecting and quantifying film forming amines in water systems are described. Water containing a film forming amine is combined with a fluorescent dye, the pH of the water is reduced, and then the fluorescence signal of the fluorescent dye is measured. The fluorescence signal is indicative of the amount of film forming amine in the water, and can be used to quantify the amount of film forming amine and control the amount of film forming amine that is introduced into the water system.
Abstract: Methods and systems are disclosed for analyzing and treating a fluid containing a peroxyacid and/or peroxide. A method of analyzing the fluid includes introducing into the fluid a decomposition agent that catalyzes decomposition of the peroxyacid and/or peroxide into decomposition products including oxygen, then directly or indirectly measuring an amount of oxygen produced after introduction of the decomposition agent, and determining an amount of the peroxyacid and/or peroxide present in the fluid. The amount of peroxyacid and/or peroxide in the fluid can also be monitored and controlled by further adjusting the amount of the peroxyacid and/or peroxide in the fluid based on the determined amount thereof. A system for performing the methods includes a decomposition agent infusion device for introducing the decomposition agent into a fluid sample, and a sensor for directly or indirectly measuring an amount of oxygen produced after introduction of the decomposition agent.
Type:
Grant
Filed:
July 19, 2017
Date of Patent:
April 27, 2021
Assignee:
CHEMTREAT, INC.
Inventors:
John Richardson, Mark Puchovich, Benjamin Niemaseck, Kevin White, James Wilkins, Robert Bedinger
Abstract: A method of suppressing corrosion of a corrodible metal surface that contacts a fluid stream in a hydrocarbon system. The method includes introducing into the fluid stream a treatment chemistry including an organometallic corrosion inhibitor having a metal and an organic carboxylic acid.
Abstract: A flue gas desulfurization (FGD) system in which a buffering additive feed directly adds a buffering additive containing acetic acid to either the FGD sump or a stream of the system that is downstream of the sump. In a method for performing flue gas desulfurization, the buffering additive, containing acetic acid, is added to either the sump or the overflow. That is, the buffering additive is added to the FGD system separately from the alkaline feed slurry, which contains lime or limestone.
Type:
Grant
Filed:
February 20, 2020
Date of Patent:
October 27, 2020
Assignee:
CHEMTREAT, INC.
Inventors:
Dale P Stuart, Rajendra Prasad Kalakodimi, David N Karlovich, Curtis Seebaran, Douglas G Brown
Abstract: Systems and methods for controlling a chloramine synthesis reaction. The system includes at least one water pump configured to deliver a first water stream to a first junction where the first water stream is mixed with a first solution including an ammonium compound, and a second water stream to a second junction where the second water stream is mixed with a second solution including hypochlorite, a reaction chamber downstream of the first and second junctions which is configured to mix the first and second water streams in order to react the ammonium compound and the hypochlorite to form chloramine, an optical measurement device disposed upstream of the second junction, the optical measurement device configured to measure an absorbance of the hypochlorite in the second solution, and at least one controller programmed to determine a concentration of the hypochlorite in the second solution based on the measured absorbance.
Type:
Application
Filed:
April 9, 2020
Publication date:
October 15, 2020
Applicant:
CHEMTREAT, INC.
Inventors:
Christopher BARON, Joseph KONEFAL, Blaine NAGAO
Abstract: A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.
Type:
Application
Filed:
May 11, 2020
Publication date:
August 27, 2020
Applicant:
CHEMTREAT, INC.
Inventors:
Joseph S. STRASSER, Joseph M. HAMNIK, James R. LAWSON, Alan J. FELLER