| SMBR内气液两相流三维CFD模拟 |
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| 引用本文： | 陶中兰,邢世录,李春丽,邱广明,田瑞.SMBR内气液两相流三维CFD模拟[J].环境工程学报,2014,8(6):2251-2256. |
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| 作者姓名： | 陶中兰 邢世录 李春丽 邱广明 田瑞 |
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| 作者单位： | 1. 内蒙古工业大学能源与动力工程学院, 呼和浩特 010051;2. 陕西省西咸新区沣西新城管理委员会, 西咸新区 712000;1. 内蒙古工业大学能源与动力工程学院, 呼和浩特 010051;1. 内蒙古工业大学能源与动力工程学院, 呼和浩特 010051;1. 内蒙古工业大学能源与动力工程学院, 呼和浩特 010051;1. 内蒙古工业大学能源与动力工程学院, 呼和浩特 010051 |
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| 基金项目： | 国家自然科学基金资助项目（51263013）；内蒙古自然科学基金（2013MS0728） |
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| 摘 要： | 应用CFD软件Fluent对浸没式膜生物反应器(submerged membrane bioreactor,SMBR)内气液两相流进行数值模拟研究,重点考查曝气系统的改变对气液两相流态的影响,并结合PIV实验验证模拟结果,从而为反应器的优化设计及膜污染的控制提供理论依据。模拟结果表明,SMBR内曝气强化了气液两相紊动,膜表面液相速度沿反应器高度增加且形成循环流动,有利于膜面污染物的脱落;反应器内气含率分布不均匀,出现死区,不利于微生物的生长;经实验验证,模拟结果吻合良好。
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| 关 键 词： | 浸没式膜生物反应器 气液两相流 数值模拟 |
Three-dimensional CFD simulation of gas-liquid two phase flow in SMBR |
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| Tao Zhonglan,Xing Shilu,Li Chunli,Qiu Guangming and Tian Rui.Three-dimensional CFD simulation of gas-liquid two phase flow in SMBR[J].Techniques and Equipment for Environmental Pollution Control,2014,8(6):2251-2256. |
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| Authors: | Tao Zhonglan Xing Shilu Li Chunli Qiu Guangming and Tian Rui |
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| Institution: | 1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2. Administrative Committee of Fengxi New City, Xixian New Area, Shaanxi Province, Xixian New Area 712000, China;1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China |
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| Abstract: | The gas-liquid two phase flow in submerged membrane bioreactor was simulated and the impact of the aeration on the flow field was studied by using the CFD software Fluent and PIV technique. The results showed that aeration could strengthen the turbulence of the gas-liquid two phase flow; the liquid velocity at the membrane surface increased and the circular flow formed with the fluid's flowing up along the membrane in the system, that was benefit to scour away the filter cake on the membrane surface; uneven distribution of gas holdup in the reactor and dead zone was not conducive to the growth of microorganisms. The simulation results were verified and agreed well to the measurement results. |
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| Keywords: | submerged membrane bioreactor gas-liquid two phase flow numerical simulation |
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