Journal
EURO JOURNAL ON DECISION PROCESSES
Volume 11, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ejdp.2023.100039
Keywords
multi-objective optimization; water resource management; receding horizon approach; rainwater harvesting system; mixed integer linear programming; compromise programming
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Increased population growth and urbanization have posed challenges to urban water systems. This paper proposes a multi-objective optimization strategy using mathematical programming to control a network of rainwater storages, which can reduce flooding and improve biodiversity outcomes.
Increased population growth and urbanization have brought critical challenges to urban water systems, including water scarcity and environmental degradation. To address the problems, real-time controlled rainwater storages are now being used to reduce flooding by intercepting rainfall, while also providing an alternate water supply and actively restoring baseflow to improve biodiversity outcomes. These benefits can be enhanced when the storages are managed as an optimized network. This paper proposes a multi-objective-optimization-based strategy utilizing mixed integer linear programming and compromise programming to control a network of rainwater storages. The proposed strategy is observed to substantially reduce storage overflow, improve stream baseflow, and fulfill most of the domestic non-potable water demand. It shows a clear advantage over the NSGA II-based strategy, indicating the effectiveness of mathematical programming with scalarization techniques in solving multi-objective problems.
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