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Applications of fluidized bed reactors in wastewater treatment - A review of the major design and operational parameters

机译：流化床反应器在废水处理中的应用-主要设计和操作参数综述

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One of the current challenges of wastewater treatment is the presence of recalcitrant pollutants which are difficult to remove using conventional treatment technologies. This poses a threat to environmental sustainability and hinders the efforts of many industries to adopt cleaner production through zero discharge and subsequent wastewater reuse. Effective wastewater treatment technologies are therefore needed to address this challenge. Accordingly, the last few years have seen intensified effort to develop more effective wastewater treatment technologies. The use of fluidized bed reactor in wastewater treatment, particularly Advanced Oxidation Processes and biological treatment, represents a unique opportunity for cost-effective treatment of wastewater containing recalcitrant pollutants. Although the application of fluidized bed reactor in biological wastewater treatment is well established with many large-scale plants in existence, its application in advanced oxidation processes is mostly at laboratory-scale. For proper design, upscaling and process improvement, information on the major parameters affecting the processes is important. This paper offers an overview on the applications of fluidized bed reactor in wastewater treatment, with emphasis on the important design and operational parameters affecting its performance. The discussion covers liquid-solid and gas-liquid-solid fluidized bed reactors and their applications in advanced oxidation processes, biological as well as adsorption processes which are effective wastewater treatment technologies. Fluidized bed reactors are excellent contacting devices and have the potential to enhance the effectiveness and energy efficiency of these treatment processes if properly design and utilized. An energy efficient and cost-effective wastewater treatment technology is crucial to industries adopting cleaner production. Important parameters such as reactor geometry, aspect ratio, support materials, reactor internal, superficial fluid velocity and other operational parameters are reviewed. The review concluded with some perspectives on future research interests. (C) 2016 Elsevier Ltd. All rights reserved.
机译：废水处理当前面临的挑战之一是存在顽固性污染物，这些污染物难以使用常规处理技术去除。这对环境的可持续性构成了威胁，并阻碍了许多行业通过零排放和后续废水再利用来采用清洁生产的努力。因此，需要有效的废水处理技术来应对这一挑战。因此，最近几年加大了开发更有效的废水处理技术的力度。在废水处理中，特别是在高级氧化工艺和生物处理中使用流化床反应器，为经济高效地处理含难处理污染物的废水提供了独特的机会。尽管流化床反应器在生物废水处理中的应用已被许多大型工厂充分确立，但其在先进氧化工艺中的应用大部分是在实验室规模。对于正确的设计，升级和过程改进，有关影响过程的主要参数的信息很重要。本文概述了流化床反应器在废水处理中的应用，重点介绍了影响其性能的重要设计和操作参数。讨论涵盖了液固和气液固流化床反应器及其在高级氧化工艺，生物以及吸附工艺中的应用，这些工​​艺是有效的废水处理技术。流化床反应器是出色的接触设备，如果设计和使用合理，则有可能提高这些处理工艺的效率和能效。节能高效的废水处理技术对于采用清洁生产的行业至关重要。审查了重要的参数，例如反应堆的几何形状，长宽比，支撑材料，反应堆的内部，表观流体速度和其他运行参数。审查总结了对未来研究兴趣的一些观点。 （C）2016 Elsevier Ltd.保留所有权利。

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