通过基于反透的技术进行盐水管理:能源消耗,性能限制,经济可行性和实际适用性
1Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, Canada, H3G 1M8; Laboratory Desalination and Natural Water Valorization, Center of Water Research and Technology, BP273, Soliman, 8020, Tunisia.
Journal of environmental management
|December 13, 2025
概括
为了海水淡化,有效的盐水管理面临着高盐度河流的挑战. 先进的反透 (RO) 技术和机械蒸汽压缩 (MVC) 显示出不同的盐度依赖的适用性窗口,以实现最佳的水回收和成本效益.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 水处理技术水处理技术
背景情况:
- 盐水管理是海水淡化中的一个关键挑战,特别是随着废物流的盐度增加.
- 现有的技术在有效处理高度盐水方面面临局限性,这会影响运营成本和可持续性.
研究的目的:
- 为了比较评估先进的反透 (RO) 技术和机械蒸汽压缩 (MVC) 处理盐水的性能.
- 确定低盐排斥RO (LSRRO),高压RO (HPRO),透辅助RO (OARO),级联透介导RO (COMRO) 和MVC在广泛的盐度范围内的运行限制和经济可行性.
主要方法:
- 基于水回收,特定能源消耗和水平价成本 (LCOW) 的性能评估.
- 在不同盐水度 (高达4M) 中对LSRRO,HPRO,OARO,COMRO和MVC进行比较分析.
主要成果:
- 基于膜的工艺 (LSRRO,HPRO,OARO,COMRO) 在中度盐度 (<1.2M) 时效率高,回收率≥60%.
- OARO和COMRO保持稳定的表现~2M,而HPRO和LSRRO急剧下降.
- 在较高度 (2-4M) 时,只有OARO和COMRO是可行的,回收率为~25%.
- 对于超盐水 (>4M),MVC是唯一的选择,尽管能量消耗更高 (15-25千瓦时/米3).
结论:
- 盐度决定了最佳技术:中等的LSRRO/HPRO,高的OARO/COMRO,极端的超度的MVC.
- 结果为基于料盐度和运营目标的技术选择提供了实际指导.
- 混合动力和可再生能源集成系统的开发对于可持续的高度盐水管理至关重要.
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