共查询到19条相似文献,搜索用时 109 毫秒
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海水淡化工艺装备研发现状 总被引:1,自引:0,他引:1
随着全球淡水资源紧缺区域增多,在过去的数十年里淡化海水因其来源广且不受降雨影响,而成为解决淡水短缺的可行方案,并得到越来越多关注和发展。海水淡化工艺(即脱盐)将海水分为两部分:淡水和高浓度的盐水。虽然海水淡化的工艺装备和支撑技术已经相当成熟,但为了不断提高技术并降低成本,国内外进行了大量的研究。该文概述了海水淡化主流技术的研究现状、工程项目以及新工艺。另外归纳了海水淡化工艺装备存在的一般问题,结合“十二五”规划,指出了海水淡化的研究方向。 相似文献
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以中东沙特某水泥厂的中型海水淡化工程为实例,介绍了反渗透膜法在该海水淡化项目中的应用。运行结果表明,该海水淡化处理工艺设计合理,出水水质符合工艺用水和饮用水要求,与MED热法相比,具有良好的环境效益和经济效益,对中东沿海区域海水淡化的发展具有借鉴意义。 相似文献
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关于我国海水淡化产业发展的政策思考 总被引:5,自引:0,他引:5
分析了我国海水淡化产业发展的现状、存在的问题及原因,提出了加大沿海地区工业用海水力度,鼓励和支持海水淡化进入市政管网,建立新型水价形成机制,制定海水淡化税收优惠政策,加大海水淡化技术自主创新力度等我国海水淡化产业发展的政策建议. 相似文献
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文章分析了海水淡化技术现状,介绍了当今海水淡化的三大主流技术:多级闪蒸、低温多效蒸发和反渗透三种工艺。对新技术在海水淡化中的应用做了描述,最后分析了海水综合利用的工艺。 相似文献
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反渗透海水淡化技术以其特有的优点得到了越来越广泛的应用,近几十年来我国对该技术的研究取得了较大发展。该文综述了反渗透海水淡化技术的发展过程及应用状况,重点介绍了反渗透膜、预处理技术、能量回收技术、反渗透系统优化设计等方面的技术进步及存在的问题,根据该技术研究及应用现状,提出了我国反渗透海水淡化技术未来发展的看法。 相似文献
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Seawater desalination plants have been utilized to supply fresh water to the Gulf Cooperation Council countries since the early 1950s. In spite of the fact that there are several types of desalination technology that can be used more efficiently and economically, one type of desalination technology, namely multi-stage flash, has been used extensively in the region. This work is an attempt to identify the most suitable technology for the specific use by soliciting expert opinions. Based on several relevant factors, the analytical hierarchy process (AHP) was utilized to select the most appropriate technology for seawater desalination. The selection process in this study was limited to seawater feed and seven factors and four commercially available desalination technologies, i.e., multi-stage flash, multi-effect desalination, vapor compression and reverse osmosis. 相似文献
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The shortage of freshwater boosts the development of seawater desalination technology. As a novel method, the hydrate based desalination technology has been put forward for decades and achieved considerable development in the past years. This review focuses on the experimental progress at the aspects of the hydrate former choice, formation promotion and ion removal efficiency and conceptive innovation of hydrate separation and energy utilization. It should be noted that gaseous hydrate former with low formation pressure and insoluble liquid hydrate former are worthy for further study. Besides, the water migration caused by propane deserves to be investigated much more deeply for the potential value of wide application. Moreover, the utilization proposal of LNG cold energy brings more possibility of commercial application. In a word, the hydrate based desalination technology is hopefully an environment friendly, low-cost and widely used desalination technology in the near future. 相似文献
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中国海水淡化技术研究现状与展望 总被引:5,自引:0,他引:5
分析了国内近年在多级闪蒸、低温多效和反渗透等海水淡化技术方面研究和发展现状,并与世界海水淡化技术先进国家进行了比较,讨论了所存在的问题和差距。此外,结合国内对海水淡化技术需求,提出了中国海水淡化技术未来可能的发展方向和目标。 相似文献