电容去离子水处理技术的研究和应用进展

Research and Application Progress of Capacitive Deionization Technology in Water Treatment

随着水资源短缺、能源紧张等问题的日益加剧,高效低耗的电容去离子(CDI)脱盐技术逐渐得到广泛重视。然而,CDI技术现在仍处于研究和发展的初期阶段,并未在工业界广泛应用。本文结合CDI技术现有的应用进展,首先介绍了CDI技术的电极材料和装置构型,并指出各类电极材料和装置构型在应用中面临的挑战。然后,综述了全球现有CDI公司的发展现状及CDI技术的应用领域,对CDI技术在循环冷却水处理、市政生活废水回用等领域的应用进行了具体分析,并对应用中浓盐水排放问题进行了进一步分析讨论。最后,对CDI技术在水处理应用中的挑战进行归纳并对发展趋势进行了展望。

With the increasing shortage of water and energy resources,capacitive desalination(CDI)technology with low energy consumption has attracted plenty of attention recently.However,CDI technology is still in its early age,and is not widely used in industry.Based on the current application progress of CDI technology,this paper first introduces the research progress of electrode materials and device configurations,and points out the challenges faced in the application.Then,the development status and application fields of the existing CDI companies around the world are reviewed,and the application cases in the fields of circulating cooling water and municipal wastewater reuse are analyzed in details.In addition,the problem of concentrated water discharge is further analyzed and discussed.Lastly,the challenges and development trends of CDI technology are forecasted in order to provide theoretical guidance for its practical application in water treatment.