曝气膜生物反应器的CFD模拟  

CFD Simulation of an Aerated Membrane Bioreactor

作　　者：李会强 范茏 刘峤 丁爱琴[1] 王青[1] 董强[1,2] 徐农 LI Hui-qiang;FAN Long;LIU Qiao;DING Ai-qin;WANG Qing;DONG Qiang;XU Nong(School of Energy Materials and Chemical Engineering,Hefei University,230601 Hefei,China;Stage Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,100090 Beijing,China)

机构地区：[1]合肥学院能源材料与化工学院,安徽合肥230601 [2]中国科学院过程工程研究所,生化工程国家重点实验室,北京100090

出　　处：《安徽化工》2021年第6期68-72,共5页Anhui Chemical Industry

基　　金：安徽省教育厅重点项目(KJ2020A0669);安徽省重点研究和开发计划项目(201904a05020077);合肥学院人才基金(18-19RC19,18-19RC15,18-19RC16);生化工程国家重点实验室基金共同资助。

摘　　要：利用Fluent软件对曝气膜生物反应器中气液两相流动进行模拟计算,探讨了进气气泡的直径、进气速度及膜纤维束的长度等因素对膜生物反应器内液体流动、气体分布的影响。结果表明,减小气泡的直径并适当增大进气速度、膜纤维束长度可以有效提高膜生物反应器内气体的分布和液体与气体的接触,从而促进气液两相进行高效的传质。Fluent software was used to simulate the gas-liquid two-phase flow in an aerated membrane bioreactor(MBR).The effects of the diameter of the bubble,inlet velocity and the length of the membrane fiber on the liquid flow and gas distribution in the MBR were discussed. The results show that the gas distribution and the contact between liquid and gas in MBR can be effectively improved by reducing the diameter of bubble and increasing the inlet velocity and the length of membrane fiber,so as to promote the efficient mass transfer between gas and liquid.

关 键 词：计算流体力学(CFD) 膜生物反应器(MBR) 曝气 多孔介质 

分 类 号：TQ221.11[化学工程—有机化工] TQ920.5[轻工技术与工程—发酵工程]