Use of monochlorourea to treat industrial waters
AssigneeHercules Incorporated
InventorsRussell J. Jerusik, Maren David, Jay C. Henderson
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Abstract
The present invention comprises a method for controlling (e.g. inhibiting) or killing microorganisms in an aqueous environment. The method includes the addition of an effective amount of monochlorourea or modified monochlorourea to an aqueous solution. This aqueous solution may be a cooling water system, a recreational water system, a water treatment facility, or any circulating water system (i.e. a papermaking facility). A method of producing monochlorourea or modified monochlorourea is also disclosed.
Claims16
A process comprising the step of adding an aqueous solution of monochlorourea or modified monochforourea to an industrial water system to control the growth of microorganisms wherein the solution of monochlorourea or modified monochlorourea is characterized such that greater than 20% of solids on a molar basis are monochlorourea or modified monochlorourea.
A process comprising the step of adding an aqueous solution of N-chloro-N,N′-dimethylurea to an industrial water system to control the growth of microorganisms wherein the aqueous solution has greater than 20% solids on a molar basis, wherein the concentration of N-chloro-N,N′-dimethylurea in the industrial water, as measured by the amount of available chlorine, ranges from 0.1 mg/l to 100.0 mg/l.
Dependencies are inferred from the claim text.