Control of development of biofilms in industrial process water
AssigneeA.Y. Laboratories Ltd.
InventorAyala Barak
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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. There is also provided a method of inhibiting the development of a biofilm adjacent a surface, the method comprising inhibiting the biofilm developing potential of a collection of microorganisms without completely eradicating said collection of microorganisms. Also provided are a system for inhibiting the development of a biofilm, and a method and system for inhibiting the production of an enzyme by a collection of microorganisms.
Claims67
A method for reducing effects in industrial process waters of an enzyme produced by a collection of microorganisms attached to a surface in an industrial water environment, the method comprising:
- causing a substance formed by the reaction of a hypochlorite oxidant and an amine source selected from the group consisting of ammonium bromide and ammonium chloride and capable of interfering with the production of an enzyme by a collection of microorganisms attached to a surface in an 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 reducing effects in industrial process waters of an enzyme produced by a collection of microorganisms attached to a surface in an industrial water environment, the method comprising:
- causing a substance formed by the reaction of a hypochlorite oxidant and an amine source selected from the group consisting of ammonium bromide and ammonium chloride and capable of interfering with the production of an enzyme by a collection of microorganisms attached to a surface in an industrial water environment to contact said collection of microorganisms when attached to said surface in said industrial water environment by intermittently feeding said substance 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.
A method for reducing effects in industrial process waters of an enzyme produced by a collection of microorganisms attached to a surface in an industrial water environment, the method comprising:
- causing a bromide activated chloramine formed by the reaction of a hypochlorite oxidant and ammonium bromide and capable of interfering with the production of an enzyme by a collection of microorganisms attached to a surface in an industrial water environment to contact said collection of microorganisms when attached to said surface in said industrial water environment by intermittently feeding said bromide activated chloramine into water in said industrial water environment,
- wherein, during each feeding of said intermittently feeding, said bromide activated chloramine 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.
Dependencies are inferred from the claim text.