| 用于污水处理的柔性纤维膜反应器氧传递及动力学研究 |
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| 引用本文： | 陈育如,虞启明,徐红卫,陈雁.用于污水处理的柔性纤维膜反应器氧传递及动力学研究[J].中国化学工程学报,2009,17(5):879-882. |
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| 作者姓名： | 陈育如 虞启明 徐红卫 陈雁 |
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| 作者单位： | 1. Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Science, Nanjing Normal University, Nanjing 210046, China;2. Environmental Engineering, Griffith School of Engineering, Griffith University, Nathan Campus, Brisbane, Queensland 4111, Australia;3. Institute of Environmental Science, Nanjing Normal University, Nanjing 210097, China |
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| 摘 要： | A flexible fibre biofilm reactor was developed for treatment of organic wastewaters. The hydrodynamic characteristics and mass transfer coefficients of oxygen were studied and compared with those of the conventional activated sludge processes. Tracer experiments were performed to obtain the residence time distributions of the reactors. The results indicated that both reactors could be treated as mixed flow reactors. The effects of flow rates of water and air on the overall mass transfer coefficient of oxygen were investigated, and the correlations between the mass transfer coefficient and the ratio of flow rates were obtained. Compared to the conventional activated sludge reactor, the mass transfer coefficients in the flexible fibre reactor were similar to but slightly lower, and less sensitive to the variation in the ratio of flow rates. It indicated that the fibre packing in the reactor hindered the oxygen transfer to some extent.
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| 关 键 词： | flexible fibre biofilm reactor oxygen mass transfer coefficient activated sludge process wastewater treatment |
| 收稿时间： | 2008-8-18 |
| 修稿时间： | 2009-4-3
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Oxygen Transfer and Hydrodynamics in a Flexible Fibre Biofilm Reactor for Wastewater Treatment |
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| CHEN Yuru,YU Jimmy,XU Hongwei,CHEN Yan.Oxygen Transfer and Hydrodynamics in a Flexible Fibre Biofilm Reactor for Wastewater Treatment[J].Chinese Journal of Chemical Engineering,2009,17(5):879-882. |
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| Authors: | CHEN Yuru YU Jimmy XU Hongwei CHEN Yan |
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| Affiliation: | 1. Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Science, Nanjing Normal University, Nanjing 210046, China;2. Environmental Engineering, Griffith School of Engineering, Griffith University, Nathan Campus, Brisbane, Queensland 4111, Australia;3. Institute of Environmental Science, Nanjing Normal University, Nanjing 210097, China |
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| Abstract: | A flexible fibre biofilm reactor was developed for treatment of organic wastewaters. The hydrodynamic characteristics and mass transfer coefficients of oxygen were studied and compared with those of the conventional activated sludge processes. Tracer experiments were performed to obtain the residence time distributions of the reactors. The results indicated that both reactors could be treated as mixed flow reactors. The effects of flow rates of water and air on the overall mass transfer coefficient of oxygen were investigated, and the correlations between the mass transfer coefficient and the ratio of flow rates were obtained. Compared to the conventional activated sludge reactor, the mass transfer coefficients in the flexible fibre reactor were similar to but slightly lower, and less sensitive to the variation in the ratio of flow rates. It indicated that the fibre packing in the reactor hindered the oxygen transfer to some extent. |
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| Keywords: | flexible fibre biofilm reactor oxygen mass transfer coefficient activated sludge process wastewater treatment |
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