Abstract
Abstract Dye-tracing experiments performed in a stormwater pond in Kingston Township, Ontario revealed low average retention times, mainly due to the small size of the pond. However, simulations of the pond flow regime using a numerical model indicated irregular circulation patterns, resulting in short-circuiting and dead zones in the pond. Installation of baffles as a retrofitting measure increased the length-to-width ratio of the flow path in the pond from 1.5:1 to 4.5:1 and corrected the observed flow regime problems. Results of dye-tracing studies performed after the retrofit demonstrated an increase in retention times with a reduction in the speed and volume of short-circuiting flow, and a decrease in wind generated flow patterns due to the installation of the baffles. In addition, an increase in the hydraulic efficiency of the pond (defined as the ratio of measured to volumetric retention times) from 0.65 to 0.86 has been observed. An increase in pollutant removal through sedimentation processes has been inferred from a comparison of retention time distributions measured before and after baffle installation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
