Multi-Criteria Analysis of Seawater Desalination Plants in Algeria: Development of a Spatial Database and Performance Evaluation Software

Abstract

This study aims to develop a comprehensive database containing all the technical and spatial information related to seawater desalination plants in Algeria, using Geographic Information Systems (GIS). The work focuses on collecting and organizing available data regarding the location of these plants, their production capacity, and the type of technology used, within an accurate spatial database framework. The Global Mapper software was used to input and analyze the data and to create thematic maps that illustrate the geographic distribution of the plants along the Algerian coastal strip. Additionally, the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) will be employed to rank the desalination plants based on their performance, using a set of technical, environmental, and social criteria. This contributes to informed decision-making and the determination of intervention priorities. This study offers a practical tool to support relevant stakeholders in planning and monitoring desalination projects, highlighting the critical role of these plants in enhancing national water security amid climate change and increasing pressure on traditional water resources.