Chemtreat, Inc.

John Richardson

Douglas McIlwaine

Benjamin Niemaseck

James Wilkins

Kevin White

Mark Puchovich

William H Henderson

Vladimir Djukanovic

Kevin Michael Gottschalk

Rob Bedinger

Michael G Trulear

Rajendra Prasad Kalakodimi

Dale P Stuart

Richard H Tribble

Robert W Bedinger

Robert Wright Bedinger, Iii

Everett Earl Carpenter

James Liang-Hiong Chia

Patrick Wood

John K Burchtorf

Curt Turner

DeAnn Wills-Guy

Tim Taylor

Brian Danyliw

Karen Williams

Shauna R Hopkins

Greg Rose

Jack Bland

Michael Burke

Yatao Liu

Richard Geisler

Joel Wicks

Stephen C Fanning

James Beck

Douglas Mcilwaine

Deann Wills-Guy

Benjamin Edward Niemaseck

Robert Wright Bedinger

Mark Jason Puchovich

Methods and systems of controlling odor in. water by adding a humic composition to the water. The humic composition cm adsorb or otherwise neutralize malodorous compounds such as hydrogen sulfide, ammonia, and mercaptans. The methods are useful in food and. agricultural industries where the water may come in contact with food items.

Method and system for controlling odor in water system

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.

Methods and systems for detecting and quantifying peroxy acid and peroxide in fluids

Methods for removing a target selenium entity from fluids by treating the fluid with a rare earth impregnated media containing an immobilized rare earth. The methods including obtaining a contaminated fluid comprising water and dissolved selenate; contacting the feed fluid with a rare earth impregnated media for removal of at least a portion of the selenate from the feed fluid thereby forming a treated fluid comprising less selenium than the feed fluid.

Compositions and methods for selenium removal

Devices and methods for sterilizing and/or disinfecting workpieces, such as medical and dental instruments. The device can include a chamber that receives the workpieces and can be sealed. The chamber is filled with chlorine dioxide gas to a threshold concentration and for a time sufficient to sterilize and/or disinfect the workpieces.

Sterilization or disinfection of workpieces, including medical and dental instruments

Compositions and methods for preventing corrosion of equipment having a corrodible metal surface that contacts water in a hydrostatic system are provided. Compositions may include a liquid-phase corrosion inhibitor and vapor-phase corrosion inhibitor. Methods may include introducing into the hydrostatic system a liquid-phase corrosion inhibitor, vapor-phase corrosion inhibitor and/or a scaling inhibitor. A protective film can be formed on the corrodible metal surface.

Compositions and methods for inhibiting corrosion in hydrostatic systems

Multiple chemical tracers are provided in a fluid system, and measured to evaluate parameters of the system. The multiple chemical tracers include at least one reactive chemical tracer that provides a measurable signal with an intensity that changes as the reactive chemical tracer reacts in the fluid system. The signals of the multiple chemical tracers are compared to each other to evaluate a system parameter, such as temperature, pH, or system events.

Fluid system evaluation with multiple chemical tracers

Methods and systems for producing high purity gaseous chlorine dioxide are provided. A solid chlorite reactant is contacted with an ozone-containing reactant gas, or a gas containing both ozone and a component that reacts with any hydroxide byproduct (such as carbon dioxide), to produce chlorine dioxide. The reaction can be monitored and controlled to ensure that excess chlorite reactant is provided and to prevent ozone from passing into the product gas.

Methods and systems for producing high purity gaseous chlorine dioxide

Systems and methods are provided for measuring the amount of cationic organic water treatment additives in water systems. Disclosed systems and methods monitor, analyze and control the amounts of cationic organic water treatment additive supplied to the water. Disclosed systems and methods may include various dyes and surfactants for facilitating the monitoring and control of the cationic organic water treatment additives.

Systems and methods for controlling cationic water treatment additives

Methods for removing a target anion entity, such as a phosphate ion, from fluids by treating the fluid with a substrate containing an immobilized rare earth, the substrate being either a first loaded substrate including a first immobilized cationic rare earth, the first loaded substrate being formed by precipitating a rare earth in a clay such that the rare earth is fixed inside a porous structure of the clay and/or fixed on the surface of the clay; or a second loaded substrate comprising a second immobilized cationic rare earth that is bonded to the second loaded substrate via a chelating ligand.

Compositions and methods for selective anion removal

There is provided methods for separating a target material from a raw material by mixing the raw material with water to form a slurry, adding a collector compound to the slurry to modify a relative hydrophobicity of a surface of the target material, adding a facilitator compound to enhance the modification of the relative hydrophobicity of the surface, and forming a froth including a concentrate of the target material. Disclosed methods may also include adding a facilitator compound to a raw material slurry that has been treated with a collector compound and a reagent for neutralizing the collector compound.

Methods for facilitating mineral extraction

Methods of producing chlorine dioxide including providing an acid, a chlorate salt and an organic water treatment additive that can form a reducing agent in situ, mixing the acid, the chlorate salt and the organic water treatment additive, and reacting the mixture.

Reducing agents for producing chlorine dioxide

Disclosed is a method for inhibiting the formation of foam in aqueous systems by adding foam control composition including a polyoxyethylene and/or a polyoxypropylene nonionic fatty acid derivative and a quaternary ammonium surfactant.

Foam control compositions

An embodiment prevents equipment fouling (deposition of unwanted material) in an oil recovery system via implementing passivation of metallic components. By preventing or at least slowing or inhibiting corrosion of equipment or components via passivation, such as passivating heat exchangers, metallic piping, and the like, an embodiment in turn reduces fouling thereof. Other embodiments are described and claimed.

Preventing equipment fouling via corrosion reduction

Disclosed are methods and apparatus for improving heat transfer of recirculating fluids within a system by introducing a ferrofluid in which iron oxide nanoparticles are suspended in a carrier fluid that is, in turn, added to a working fluid for increasing the heat capacity of the working fluid. The ferrofluid suspension can be prepared ex-situ and metered into the working fluid from a separate reservoir or may be prepared in-situ as needed through the use of an inline reactor. The ferrofluid can be introduced with other water treatment additives which are compatible with the colloidal suspension and monitored directly and/or indirectly for controlling the heat capacity performance of the system.

Method and apparatus for improving heat transfer in industrial water systems with ferrofluids

There are provided methods of suppressing corrosion of a corrodible metal surface that contacts a water stream in a water system, the method comprising: (a) introducing into the water stream a shot dose of a treatment composition comprising a corrosion inhibitor, the shot dose being introduced into the water stream over a first time period and the water stream having a first concentration of corrosion inhibitor during the first time period; (b) then reducing the amount of treatment composition that is introduced into the water stream; and (c) after the first time period, maintaining a second concentration of corrosion inhibitor in the water stream over a second time period, the second concentration being less than 25% of the concentration of corrosion inhibitor during the first time period. There is also provided, after the second time period, introducing into the water stream a second shot dose of the corrosion inhibitor, the second shot dose being introduced into the water stream over a third time period, the third concentration being greater than the second concentration.

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Hanover, VA, United States of America

John Richardson