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Optimal Wastewater Loading under Conflicting Goals and Technology Limitations in a Riverine System
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
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2017 (English)In: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 89, no 3, 211-220 p.Article in journal (Refereed) Published
Abstract [en]

This paper investigates a novel simulationoptimization (S-O) framework for identifying optimal treatment levels and treatment processes for multiple wastewater dischargers to rivers. A commonly used water quality simulation model, Qual2K, was linked to a Genetic Algorithm optimization model for exploration of relevant fuzzy objective-function formulations for addressing imprecision and conflicting goals of pollution control agencies and various dischargers. Results showed a dynamic flow dependence of optimal wastewater loading with good convergence to near global optimum. Explicit considerations of real-world technological limitations, which were developed here in a new S-O framework, led to better compromise solutions between conflicting goals than those identified within traditional S-O frameworks. The newly developed framework, in addition to being more technologically realistic, is also less complicated and converges on solutions more rapidly than traditional frameworks. This technique marks a significant step forward for development of holistic, riverscape-based approaches that balance the conflicting needs of the stakeholders.

Place, publisher, year, edition, pages
2017. Vol. 89, no 3, 211-220 p.
Keyword [en]
water quality, simulation, optimization, fuzzy goals, wastewater treatment, waste load allocation
National Category
Water Engineering Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:su:diva-140909DOI: 10.2175/106143017X14839994523866ISI: 000397300200002OAI: oai:DiVA.org:su-140909DiVA: diva2:1083774
Available from: 2017-03-22 Created: 2017-03-22 Last updated: 2017-05-02Bibliographically approved

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Lyon, Steve W.Destouni, Georgia
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