Abstract
To solve the prominent problem of water supply and demand contradictions, enhance water resource security capabilities, and improve economic, social, and ecological benefits, this paper comprehensively analyzes the water resource situation in Wu’an City and proposes a method for calculating the rigid water demand and total water demand threshold for the whole city and a method for calculating the water supply capacity of multiple water sources. At the same time, taking economic, social, and ecological benefits as the objective function and water resource allocation rules, water supply balance, water supply capacity, total water consumption, water consumption per Chinese Yuan(CNY) 10,000 of Gross Domestic Product (GDP), water consumption per CNY 10,000 of industrial added value, and non-negative as constraints, the water resource optimization allocation model for Wu’an City was constructed, and the Non-dominated Sorting Genetic Algorithm III (NSGA-III) combined with the Technique for Order Preference by Similarity to an Ideal Solution (TOSPIS) was used to solve it. The results show that the rigid water demand of Wu’an City is met, the Gini coefficient of water supply satisfaction and ecological water shortage in the flat water scenario are both 0, the overall difference in water supply satisfaction of each township is very small, and the ecological water demand is met. Under the current situation, Wu’an City basically achieves a regional supply and demand balance, which can increase water supply by 5.841 million m3 and increase the net economic benefit of water supply by CNY 136.5515 million. The optimized water resource allocation plan has higher economic, social, and ecological benefits. The research can provide technical support for water resource management in Wu’an City.
Published Version
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