High-Pressure Reverse Osmosis for Energy-Efficient Hypersaline Brine Desalination: Current Status, Design Considerations, and Research Needs,Environmental Science & Technology Letters

当前位置： X-MOL 学术 › Environ. Sci. Technol. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

High-Pressure Reverse Osmosis for Energy-Efficient Hypersaline Brine Desalination: Current Status, Design Considerations, and Research Needs
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2018-07-09 , DOI: 10.1021/acs.estlett.8b00274
Douglas M. Davenport ₁ , Akshay Deshmukh ₁ , Jay R. Werber ₁ , Menachem Elimelech ₁

Affiliation

Water scarcity, expected to become more widespread in the coming years, demands renewed attention to freshwater protection and management. Critical to this effort are the minimization of freshwater withdrawals and elimination of wastewater discharge, both of which can be achieved via zero liquid discharge (ZLD), an aggressive wastewater management approach. Because of the high energetic cost of thermal desalination, ZLD is particularly challenging for high-salinity wastewaters. In this review, we discuss the potential of high-pressure reverse osmosis (HPRO) (i.e., reverse osmosis operated at a hydraulic pressure greater than ∼100 bar) to efficiently desalinate hypersaline brines. We first discuss the inherent energy efficiency of membrane processes compared to that of conventional thermal processes for brine desalination. We then highlight the opportunity of HPRO to reduce energy requirements for desalination of key high-salinity industrial wastewaters. The current state of membrane materials and processes for hypersaline brine desalination is also discussed, emphasizing several process design considerations unique to HPRO. Lastly, we discuss the most pressing research needs for the development of HPRO, notably the development of membranes and modules suitable for high pressures as well as fundamental studies of compaction and transport under HPRO conditions.

中文翻译：

高效反盐水高压反渗透技术的现状，设计考虑和研究需求

缺水现象预计将在未来几年变得更加普遍，因此需要重新关注淡水的保护和管理。这项工作的关键是最大程度地减少淡水抽取量并消除废水排放，这两者都可以通过零液体排放（ZLD）（一种积极的废水管理方法）来实现。由于热脱盐的能源成本很高，因此ZLD对于高盐度废水尤其具有挑战性。在这篇综述中，我们讨论了高压反渗透（HPRO）（即在大于约100 bar的液压压力下运行的反渗透）有效地使高盐盐水淡化的潜力。我们首先讨论与盐水淡化的常规热工艺相比，膜工艺的固有能效。然后，我们重点介绍了HPRO降低关键高盐度工业废水脱盐所需能量的机会。还讨论了用于高盐盐水脱盐的膜材料和工艺的当前状态，强调了HPRO独有的几个工艺设计注意事项。最后，我们讨论了开发HPRO的最紧迫的研究需求，特别是适用于高压的膜和组件的开发以及在HPRO条件下压实和运输的基础研究。

更新日期：2018-07-10

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11