Optimal Distribution and Control of Storage Tank to Mitigate the Impact of New Developments on Receiving Water Quality
Publication: Journal of Environmental Engineering
Volume 136, Issue 3
Abstract
Storage tanks are commonly installed in a combined sewer system to control the discharge of combined sewer overflows that have been identified as a leading source for receiving water pollution. The traditional approach to determine the distribution of storage tank volume in the sewer system is confined to the use of objectives within the system itself due to the limits of separate modeling of urban wastewater systems, consisting of the sewer system, wastewater-treatment plant, and receiving water. The aim of this study is to investigate the optimal distribution and control of storage tanks with an objective to mitigate the impact of new residential development on receiving water quality from an integrated modeling perspective. An integrated urban wastewater model has been used to test three optimization scenarios: optimal flow rate control, storage distribution, and a combination of these two. In addition to the cost of storage tank construction, two receiving water quality indicators, dissolved oxygen and ammonium concentration, are used as optimization objectives. Results show the benefits of direct evaluation of receiving water quality impact in the context of storage distribution optimization. Results indicate that storage allocation should be considered in conjunction with optimal flow rate control to achieve the maximum effectiveness in water pollution mitigation.
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Acknowledgments
The study is partly funded by EPSRC-GB (Grant No. EPSRC-GBGR/S86846/01) and is also part of the Integrative Systems and the Boundary Problem (ISBP) project (www.tigress.ac/isbp), supported by the European Union’s Framework 6 Programme. The writers also thank the three anonymous reviewers for their comments.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 136 • Issue 3 • March 2010
Pages: 335 - 342
Copyright
© 2010 ASCE.
History
Received: Jul 18, 2008
Accepted: Sep 12, 2009
Published online: Sep 18, 2009
Published in print: Mar 2010
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