Staged boundary layer treatment method and system for biofouling control
First Claim
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1. A method for biofouling control in a fluid containing structure susceptible to biofouling, comprising:
- injecting a first biofouling control agent into a boundary layer adjacent walls of said fluid containing structure at a first injection stage;
injecting a second biofouling control agent into the boundary layer adjacent said walls of said fluid containing structure at a second stage downstream of said first stage;
measuring at least a first control parameter associated with said first control agent upstream of said second stage;
controlling injecting of said first control agent at said first injection stage based on the measured first control parameter;
measuring at least a second control parameter associated with said second control agent downstream of said second stage; and
controlling injecting of said second control agent at said second stage based on the measured second control parameter.
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Abstract
A method and system for biofouling control of fluid containing structure of susceptible biofouling, wherein chlorine, hot water and/or some other control agent is injected by plural stages into the boundary layer, and chlorine residual, water temperature, or some other respective control parameter is maintained in the boundary layer just upstream of the next injection point.
21 Citations
18 Claims
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1. A method for biofouling control in a fluid containing structure susceptible to biofouling, comprising:
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injecting a first biofouling control agent into a boundary layer adjacent walls of said fluid containing structure at a first injection stage; injecting a second biofouling control agent into the boundary layer adjacent said walls of said fluid containing structure at a second stage downstream of said first stage; measuring at least a first control parameter associated with said first control agent upstream of said second stage; controlling injecting of said first control agent at said first injection stage based on the measured first control parameter; measuring at least a second control parameter associated with said second control agent downstream of said second stage; and controlling injecting of said second control agent at said second stage based on the measured second control parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for biofouling control in a fluid containing structure susceptible to biofouling, comprising:
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a first injection stage means for injecting a first biofouling control agent into a boundary layer adjacent walls of said fluid containing structure; a second injection stage means downstream of said first stage means for injecting a second biofouling control agent into the boundary layer adjacent said walls of said fluid containing structure downstream of said first stage means; first measuring means for measuring at least a first control parameter associated with said first control agent upstream of said second stage means; first control means for controlling injecting of said first control agent at said first injection stage means based on the measured first control parameter measured by said first measuring means; second measuring means for measuring at least a second control parameter associated with said second control agent downstream of said second stage means; and second control means for controlling injecting of said second control agent at said second stage means based on the measured second control parameter measured by said second measuring means. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification