Abstract
The reuse of stormwater runoff is becoming an increasingly popular addition to stormwater management systems. The advantages include a reduction in pollution and volume discharges to surface waters, the return of runoff to the ground, and savings in the cost of using potable water. This research, by developing a relationship between the reuse volume (temporary storage volume), the rate at which stormwater is reused, and the percentage of annual surface runoff that is reused, provides a procedure in which to design stormwater reuse systems. The traditional design of pond temporary storage volume has been based on the consideration of water quality and uses a design storm. The design storm, however, ignores the preceding rainfall record and must assume that there is an antecedent dry period long enough to ensure that the pond is at the control elevation (temporary storage is zero). To address the sensitivity of the temporary storage volume to inter-event dry periods, long term rainfall records were used from 17 Florida stations in a model that simulates the behavior of a pond over time. A spreadsheet was used to build a 15 year mass balance for a pond. After each rainfall event, surface runoff and reuse volumes were respectively added to and subtracted from the previous pond storage volume. If the temporary storage volume exceeded the available storage volume, discharge occurred. If the temporary storage volume was less than zero (the permanent pool volume was used for reuse water), supplemental water was used to replenish the pond and maintain the permanent pool. Both the rate of reuse from the pond and the reuse volume were varied. The reuse efficiency, defined as one minus the total volume of surface discharge divided by the total volume of runoff times one hundred, was calculated for each combination. The results of the simulation are presented in Rate Efficiency-Volume (REV) charts. Curves reflecting several efficiencies track the appropriate combinations of reuse rates and reuse storage volumes. The REV charts are generalized for application to watersheds of any size or runoff coefficient. A computer program was developed to execute the design technique.
Notes
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Graduation Date
1991
Semester
Spring
Advisor
Wanielista, Martin P.
Degree
Master of Science (M.S.)
College
College of Engineering
Department
Civil and Environmental Engineering
Degree Program
Civil Engineering
Format
Pages
132 p.
Language
English
Length of Campus-only Access
None
Access Status
Masters Thesis (Open Access)
Identifier
DP0028108
Subjects
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
STARS Citation
Harper, Gregory Miller, "Design curves for the reuse of stormwater" (1991). Retrospective Theses and Dissertations. 3846.
https://stars.library.ucf.edu/rtd/3846
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