Seawater desalination for agriculture by integrated forward and reverse osmosis: Improved product water quality for potentially less energy
Seawater desalination for agriculture by integrated forward and reverse osmosis: Improved product water quality for potentially less energy
复制标题
DOI：
10.1016/j.memsci.2012.05.016
复制
发表时间：
2012-10-01
影响因子：
9.5
通讯作者：
Elimelech, Menachem
中科院分区：
文献类型：
--
作者：
Shaffer, Devin L.;Yip, Ngai Yin;Elimelech, Menachem
用于农业灌溉的海水淡化将成为满足缺水地区日益增长的用水需求的重要贡献者。用于粮食生产的灌溉农业推动了全球水资源需求，预计水资源需求将增加，而可用供应将进一步减少。反渗透是目前海水淡化的领先技术，其实施受到了部分限制，因为成本和能源消耗较高。由于农业灌溉水的硼和氯化物标准严格，农业海水淡化比饮用水海水淡化的能源密集度更高，并且需要额外的后处理，例如第二道反渗透过程。从这个角度来看，我们引入了用于海水淡化的集成正渗透和反渗透过程的概念。过程建模结果表明，该集成过程可以满足农业灌溉的硼和氯化物水质要求，同时比传统的两遍反渗透过程消耗更少的能量。讨论了进一步开发集成正向和反渗透海水淡化工艺所面临的挑战及其节能以外的潜在好处。 (c) 2012 Elsevier B.V. 保留所有权利。
Seawater desalination for agricultural irrigation will be an important contributor to satisfying growing water demands in water scarce regions. Irrigated agriculture for food production drives global water demands, which are expected to increase while available supplies are further diminished. Implementation of reverse osmosis, the current leading technology for seawater desalination, has been limited in part because of high costs and energy consumption. Because of stringent boron and chloride standards for agricultural irrigation water, desalination for agriculture is more energy intensive than desalination for potable use, and additional post-treatment, such as a second pass reverse osmosis process, is required. In this perspective, we introduce the concept of an integrated forward osmosis and reverse osmosis process for seawater desalination. Process modeling results indicate that the integrated process can achieve boron and chloride water quality requirements for agricultural irrigation while consuming less energy than a conventional two-pass reverse osmosis process. The challenges to further development of an integrated forward and reverse osmosis desalination process and its potential benefits beyond energy savings are discussed. (c) 2012 Elsevier B.V. All rights reserved.