投稿  |   English  |
Engineering
 首页  |  最新收录  |  当期目录  |  过刊浏览  |  作者中心  |  关于期刊 开放获取
 投稿  |   English  |
 Engineering    2017, Vol. 3 Issue (3) : 330-342     https://doi.org/10.1016/J.ENG.2017.03.021
 Research |

Nelson Michael J.,Nakhla George,Zhu Jesse()
Particle Technology Research Center, The University of Western Ontario, London, ON N6A 5B9, Canada
 全文: PDF(980 KB)   HTML 导出: BibTeX | EndNote | Reference Manager | ProCite | RefWorks     支持信息

 摘要 污水处理是保护环境和人类健康的重要过程。目前，最经济有效的污水处理方法为生物处理法，如运行时间较长的活性污泥法。然而，随着人口的增长，对新型高效污水处理技术的需求越来越迫切，流态化技术虽然已展示出能够提高许多化学与生化处理过程的效率，但尚未在大型污水处理过程中得到广泛的应用。循环流化床生物反应器(CFBBR) 污水处理技术的研究始于加拿大西安大略大学，在该技术中，载体颗粒表面会形成一层含细菌与其他微生物的生物膜，并在反应器中呈流化状态；流态化固有的良好混合和质量传递特性，使得该技术在生活污水和工业污水处理过程中均具优势。实验室阶段和中试阶段的研究均证实了CFBBR 可去除污水中90% 以上的碳源、80%以上的氮源，且污泥产量少于活性污泥法的1/3。由于该技术的高效性，CFBBR 还可被用于传统方法难以处理的高有机碳污水处理，且具有占地面积小的优势。同时，CFBBR 在动态负荷试验( 进水量和进水浓度变化) 中也展现了良好的抗冲击和恢复性能。总的来说，CFBBR 是一种高效的污水处理方法，可在较短的水力停留时间和较小的反应器体积内处理更多的污水。此外，该反应器的紧凑设计将有助于在偏僻地区建造独立的污水处理系统。 关键词 ： 污水,  污水生物处理,  流化床技术,  生物流化床反应器,  生物营养物去除,  生物膜技术,  生物颗粒,  高效过程 Abstract：Wastewater treatment is a process that is vital to protecting both the environment and human health. At present, the most cost-effective way of treating wastewater is with biological treatment processes such as the activated sludge process, despite their long operating times. However, population increases have created a demand for more efficient means of wastewater treatment. Fluidization has been demonstrated to increase the efficiency of many processes in chemical and biochemical engineering, but it has not been widely used in large-scale wastewater treatment. At the University of Western Ontario, the circulating fluidized-bed bioreactor (CFBBR) was developed for treating wastewater. In this process, carrier particles develop a biofilm composed of bacteria and other microbes. The excellent mixing and mass transfer characteristics inherent to fluidization make this process very effective at treating both municipal and industrial wastewater. Studies of lab- and pilot-scale systems showed that the CFBBR can remove over 90% of the influent organic matter and 80% of the nitrogen, and produces less than one-third as much biological sludge as the activated sludge process. Due to its high efficiency, the CFBBR can also be used to treat wastewaters with high organic solid concentrations, which are more difficult to treat with conventional methods because they require longer residence times; the CFBBR can also be used to reduce the system size and footprint. In addition, it is much better at handling and recovering from dynamic loadings (i.e., varying influent volume and concentrations) than current systems. Overall, the CFBBR has been shown to be a very effective means of treating wastewater, and to be capable of treating larger volumes of wastewater using a smaller reactor volume and a shorter residence time. In addition, its compact design holds potential for more geographically localized and isolated wastewater treatment systems. 基金资助: 通讯作者: Zhu Jesse     E-mail: jzhu@uwo.ca 最新录用日期:    发布日期: 2017-06-30
 服务 推荐给朋友 免费邮件订阅 RSS订阅 作者相关文章 Michael J. Nelson George Nakhla Jesse Zhu
 引用本文: Michael J. Nelson,George Nakhla,Jesse Zhu. Fluidized-Bed Bioreactor Applications for Biological Wastewater Treatment: A Review of Research and Developments[J]. Engineering, 2017, 3(3): 330-342. 网址: http://engineering.org.cn/EN/10.1016/J.ENG.2017.03.021     OR     http://engineering.org.cn/EN/Y2017/V3/I3/330
 [1] Wen-Wei Li, Han-Qing Yu. Advances in Energy-Producing Anaerobic Biotechnologies for Municipal Wastewater Treatment[J]. Engineering, 2016, 2(4): 438-446. [2] Tomomi Uchiyama, Satoshi Honda, Tomoko Okayama, Tomohiro Degawa. A Feasibility Study of Power Generation from Sewage Using a Hollowed Pico-Hydraulic Turbine[J]. Engineering, 2016, 2(4): 510-517.
Viewed
Full text

Abstract

Cited

Shared
Discussed

Engineering