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膜生物反应器内流场动力学特性的PIV实验研究

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李春丽, 田瑞, 陶中兰, 文佳龙. 膜生物反应器内流场动力学特性的PIV实验研究[J]. 环境工程学报, 2013, 7(3): 918-924.
引用本文: 李春丽, 田瑞, 陶中兰, 文佳龙. 膜生物反应器内流场动力学特性的PIV实验研究[J]. 环境工程学报, 2013, 7(3): 918-924.
shu
Li Chunli, Tian Rui, Tao Zhonglan, Wen Jialong. Research on dynamics characteristics of flow field in MBR by PIV technology[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 918-924.
Citation: Li Chunli, Tian Rui, Tao Zhonglan, Wen Jialong. Research on dynamics characteristics of flow field in MBR by PIV technology[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 918-924.
shu

膜生物反应器内流场动力学特性的PIV实验研究

  • 1.

    内蒙古工业大学能源与动力工程学院,呼和浩特 010051

  • 基金项目:

    国家自然科学基金资助项目(50766002)

    内蒙古自然科学(重大)基金资助项目(2010ZD09)

  • 中图分类号: TQ028.8; X703.1

Research on dynamics characteristics of flow field in MBR by PIV technology

  • 1.

    College of Energy and Power Engineering, Inner Mongolia University of Technology, Huhhot 010051, China

  • Fund Project:

摘要

  • 摘要: 浸没式膜生物反应器系统内膜面附近的气液两相流动力学特性对控制浓差极化和膜污染具有重要影响。应用粒子图像测速(PIV)技术对浸没式膜生物反应器内近膜面的液相流场动力学特性进行了研究。采用相分离技术灰度分辨法将通过PIV技术得到的气液两相流场图像中的液相速度场进行辨别,得到膜面附近的液相流场数据,并应用Tecplot软件计算得出液相流的涡量特性。在3 mm曝气孔径,2.5、3.0、3.5、4.5、5.5和6.5 m3/h 6种曝气强度下分析了膜面附近的液相速度场和涡量场。结果表明,曝气强度对液相流场和涡量场的影响较大,在一定范围内增加曝气强度可以使得液相速度和涡量增加,同时,分析了3 mm孔径下圆帽状气泡的动力学特性。研究结果为膜生物反应器系统的优化设计提供了研究经验和实验数据。
    Abstract: The dynamic characteristic of gas-liquid two phase flow around membrane fibers have important effects on controlling concentration polarization and membrane pollution in submerged membrane bioreactor system. Particle image velocimetry (PIV) technology was used to measure the dynamic characteristic of liquid phase flow around membrane fibers. First, the gas-liquid two phase flow field image was gained by PIV technology, gray resolution method was developed and implemented to discriminate liquid phase velocity field from two phase flow field image, and vorticity field data of liquid flow was calculated around membrane fibers by Tecplot. We analyzed the liquid phase flow field and calculated vorticity field data around membrane fibers under the condition of aeration intensity of 2.5,3.0,3.5,4.5,5.5 and 6.5 m3/h in bore diameter of 3 mm.It was shown that aeration intensity affected liquid phase flow field and vorticity field greatly, increasing aeration intensity in a certain range can make the liquid velocity and vorticity increase. Under the experimental conditions, the optimal aeration intensity identified as 6.5 m3/h. At the same time, we also analyzed dynamics characteristics of bubble with bore diameter of 3 mm. The study provides experimental data and research experience for optimization design of membrane bio-reactor (MBR).
  • [1] Imasaka T. Apparatus for membrane separation of industrial waste water:Japan, JP63104609.1988
    [2] Imasaka T. Apparatus for membrane separation of wastewater from food industries: Japan, JP63104610.1988
    [3] Chang S., Fane A. G., Vigneswaran S. Experimental assessment of filtration of biomass with transverse and axial fibres. Chemical Engineering Journal, 2002,87(1):121-127
    [4] Chang S., Fane A. G. Filtration of biomass with lab-scale submerged hollow fibre membrane module: Effect of operational conditions and module configuration.Chem. Technol. Biotechnol., 2002,77(2): 1030-1038
    [5] Cui Z. F., Chang S., Fane A. G. The use of gas bubbling to enhance membrane processes. Journal of Membrane Science, 2003,221(1-2):1-35
    [6] Lindken Ralph, Gui Lichuan, Merzkirch Wolfgang. Velocity measurements in multiphase flow by means of particle image velocimetry. Chemical Engineering Technology, 1999,22 (3):202-206
    [7] Lindken R., Merzkirch W. Velocity measurements of liquid and gaseous phase for a system of bubbles rising in water.Experiments in Fluids, 2000,29(1): 194-201
    [8] Delnoij E., Westerweel J., Deen N. G.,et al. Ensemble correlation PIV applied to bubble plumes rising in a bubble column. Chemical Engineering Science, 1999, 54(21): 5159-5171
    [9] Kosiwczuk W., Cessou A., Trinite M., et al. Simultaneous velocity field measurements in two-phase flows for turbulent mixing of sprays by means of two-phase PIV. Experiments in Fluids, 2005,39(5): 895-908
    [10] Liu Zhengliang, Zheng Ying. PIV study of bubble rising behavior. Powder Technology, 2006,168(1):10-20
    [11] Yeo Adrian P. S., Law Adrian W. K., Fane A. G. Factors affecting the performance of a submerged hollow fiber bundle.Journal of Membrane Science, 2006,280(1-2): 969-982
    [12] Yeo Adrian P. S., Law Adrian W. K., Fane A. G. The relationship between performance of submerged hollow fibers and bubble induced phenomena examined by particle image velocimetry. Journal of Membrane Science, 2007,304(1-2):125-137
    [13] Liu Ningyu, Zhang Qide, Chin Gim-Leong,et al. Experimental investigation of hydrodynamic behavior in a real membrane bio-reactor unit. Journal of Membrane Science, 2010, 353(1-2):122-134
    [14] 万甜,程文,刘晓辉. 曝气池中气液两相流粒子图像测速技术. 水利水电科技进展,2007, 27(6): 99-102 Wan Tian, Cheng Wen, Liu Xiaohui. PIV technology for study of gas-liquid two-phase flow in an aeration tank. Advances in Science and Technology of Water Resources, 2007, 27(6): 99-102 (in Chinese)
    [15] 刘晓辉,周孝德,程文,等. 基于快速傅立叶变换的粒子图像测速技术. 科学技术与工程, 2006,6(4):436-438 Liu Xiaohui,Zhou Xiaode,Cheng Wen, et al. The particle image velocimetry technique based on fast fourier translation. Science Technology and Engineering, 2006, 6(4):436-438 (in Chinese)
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出版历程
  • 收稿日期:  2012-10-08
  • 刊出日期:  2013-03-18
李春丽, 田瑞, 陶中兰, 文佳龙. 膜生物反应器内流场动力学特性的PIV实验研究[J]. 环境工程学报, 2013, 7(3): 918-924.
引用本文: 李春丽, 田瑞, 陶中兰, 文佳龙. 膜生物反应器内流场动力学特性的PIV实验研究[J]. 环境工程学报, 2013, 7(3): 918-924.
shu
Li Chunli, Tian Rui, Tao Zhonglan, Wen Jialong. Research on dynamics characteristics of flow field in MBR by PIV technology[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 918-924.
Citation: Li Chunli, Tian Rui, Tao Zhonglan, Wen Jialong. Research on dynamics characteristics of flow field in MBR by PIV technology[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 918-924.
shu

膜生物反应器内流场动力学特性的PIV实验研究

  • 1. 内蒙古工业大学能源与动力工程学院,呼和浩特 010051
  • 收稿日期:  2012-10-08
基金项目:

国家自然科学基金资助项目(50766002)

内蒙古自然科学(重大)基金资助项目(2010ZD09)

摘要: 浸没式膜生物反应器系统内膜面附近的气液两相流动力学特性对控制浓差极化和膜污染具有重要影响。应用粒子图像测速(PIV)技术对浸没式膜生物反应器内近膜面的液相流场动力学特性进行了研究。采用相分离技术灰度分辨法将通过PIV技术得到的气液两相流场图像中的液相速度场进行辨别,得到膜面附近的液相流场数据,并应用Tecplot软件计算得出液相流的涡量特性。在3 mm曝气孔径,2.5、3.0、3.5、4.5、5.5和6.5 m3/h 6种曝气强度下分析了膜面附近的液相速度场和涡量场。结果表明,曝气强度对液相流场和涡量场的影响较大,在一定范围内增加曝气强度可以使得液相速度和涡量增加,同时,分析了3 mm孔径下圆帽状气泡的动力学特性。研究结果为膜生物反应器系统的优化设计提供了研究经验和实验数据。

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