On Obtaining Best Compromise Solutions for Municipal Water Use

by Ronald K. Williams, North Dakota State Univ, United States,
G. Padmanabhan, North Dakota State Univ, United States,

Document Type: Proceeding Paper

Part of: Optimizing the Resources for Water Management


Approaches to determine the 'best' use of available resources, including reuse of treated effluent streams have frequently relied on optimization techniques which seek to minimize one decision parameter, such as cost to the city. In a real-world situation however, several competing decision parameters must be weighed simultaneously to find a 'best compromise' solution. Such an optimization problem was formulated as a multiple objective decision making (MODM) model using surrogate worth trade-off (SWT) approach. Solutions of the non-linear optimization problem were obtained for SWT analysis by using a powerful and very user-friendly optimization package, General Algebraic Modelling System (GAMS). The model was applied to the city of Moorhead, MN.

Subject Headings: Municipal water | Optimization models | Computer models | Water use | Urban areas | Decision making | Computer programming

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