Thermal seawater desalination for irrigation purposes in a water-stressed region: Emerging value tensions in full-scale implementation

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2024-10-18 DOI:10.1016/j.desal.2024.118213

Gonzalo Gamboa , Patricia Palenzuela , Rodoula Ktori , Diego C. Alarcón-Padilla , Guillermo Zaragoza , Samar Fayad , Dimitros Xevgenos , Mar Palmeros Parada

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引用次数: 0

Abstract

Water scarcity in arid regions has driven the spread of desalination. These systems contribute to water access but come at an intensive energy cost, and lead to brine discharge and associated environmental impacts. This work aims to investigate emerging societal issues and tensions when developing and implementing a thermal desalination system to produce irrigation water in the South of Spain. This has been done in a demonstration system for solar desalination able to recover water and salts from desalination brine. For this purpose, a context-sensitive design exercise has been implemented. First, tensions between social values expressed by diverse stakeholders have been identified. Then, a set of technical scenarios for the full-scale implementation of the system were designed and evaluated, comparing them to conventional membrane desalination. The analysis indicates high economic and energy costs to avoid the environmental impacts of increasing water production.

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缺水地区用于灌溉的热海水淡化：全面实施过程中新出现的价值矛盾

干旱地区的水资源短缺推动了海水淡化的普及。这些系统有助于水资源的获取，但能源成本高昂，并导致盐水排放和相关的环境影响。这项工作旨在研究在西班牙南部开发和实施热海水淡化系统以生产灌溉用水时出现的社会问题和紧张局势。这项工作是在一个能够从海水淡化盐水中回收水和盐分的太阳能海水淡化示范系统中完成的。为此，实施了一项对环境敏感的设计工作。首先，确定了不同利益相关者所表达的社会价值之间的紧张关系。然后，设计并评估了一套全面实施该系统的技术方案，并将其与传统的膜法海水淡化进行了比较。分析表明，为避免增加产水量对环境造成的影响，需要付出高昂的经济和能源成本。

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来源期刊

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.