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US 2006/0138058 A1Published application
Control of development of biofilms in industrial process water
AssigneeA.Y. Laboratories Ltd.
InventorAyala Barak
Life of this patent
Estimating the term…
Abstract
There is provided a method of inhibiting the development of a biofilm adjacent a surface, the method comprising intermittently applying a biofilm inhibiting substance to a collection of microorganisms having biofilm developing potential. Other embodiments are also described.
Claims21
1-241. (canceled)
A method for improving the efficacy of a peroxide in industrial process waters, the method comprising:
- introducing a peroxide into an industrial water environment;
- and
- introducing a substance formed by the reaction of a hypochlorite oxidant and ammonium bromide and capable of interfering with the production of a peroxide-degrading enzyme by a collection of microorganisms attached to a surface in said industrial water environment to contact said collection of microorganisms when attached to said surface in said industrial water environment by introducing said substance into water in said industrial water environment at a first concentration and for a first duration, and thereafter, after a second duration during which said substance is not introduced into said water, again causing said substance to contact said collection of microorganisms by again introducing said substance into said water in said industrial water environment, wherein said first duration and said first concentration are selected to be sufficient to substantially eliminate the production of said enzyme by said collection of microorganisms in said industrial water environment during said second duration, but insufficient to completely eradicate said collection of microorganisms and insufficient to inactivate said enzyme.
A method for bleaching substances in industrial process waters, the method comprising:
- introducing a peroxide into an industrial water environment;
- and
- introducing a substance formed by the reaction of a hypochlorite oxidant and ammonium bromide and capable of interfering with the production of a peroxide-degrading enzyme by a collection of microorganisms attached to a surface in said industrial water environment to contact said collection of microorganisms when attached to said surface in said industrial water environment by introducing said substance into water in said industrial water environment at a first concentration and for a first duration,
- and thereafter, after a second duration during which said substance is not introduced into said water, again causing said substance to contact said collection of microorganisms by again introducing said substance into said water in said industrial water environment,
- wherein said first duration and said first concentration are selected to be sufficient to substantially eliminate the production of said enzyme by said collection of microorganisms in said industrial water environment during said second duration, but insufficient to completely eradicate said collection of microorganisms and insufficient to inactivate said enzyme.
2 more elements
A method for improving the efficacy of a peroxide in industrial process waters, the method comprising:
- introducing a peroxide into an industrial water environment;
- and
- intermittently feeding a substance formed by the reaction of a hypochlorite oxidant and ammonium bromide and capable of interfering with the production of a peroxide-degrading enzyme by a collection of microorganisms attached to a surface in an industrial water environment into water in said industrial water environment,
- wherein, during each feeding of said intermittently feeding, said substance is fed for a duration and at a concentration sufficient to substantially eliminate the production of said enzyme by said collection of microorganisms in said industrial water environment until the next feeding in said intermittently feeding, but insufficient to completely eradicate said collection of microorganisms attached at said surface in said industrial water environment and insufficient to inactivate said enzyme.
1 more element
Dependencies are inferred from the claim text.