运用数值模拟,研究膜生物反应器中曝气管路布气位置及导流板对反应器内流场分布的影响,并对3种气水比(10:1、15:1、20:1)进行了优化研究.将模拟结果进行比较发现:“对齐”布气优于“间隔”布气；导流板对反应器内流场特性有较明显的影响,导流作用能有效地改善反应器内气含率的分布状况,提高氧传质效率,增大膜面剪切速度.在相同条件下,其平均膜面剪切速度分别是不加导板的“对齐”和“间隔”布气方式的1.5和1.9倍.当气水比为15:1时,各种布气方式反应器内气含率分布均较大,流场内的涡流均非常明显,整个场内形成了循环流动,膜面剪切速度也达到最大.
参考文献
| [1] | Polyakov YS .Deadend outside-in hollow fiber membrane filter: Mathematical model[J].Journal of Membrane Science,2006(1/2):615-624. |
| [2] | Vargas A .Controlled backwashing in a membrane sequencing batch reactorused for toxic wastewater treatment[J].Journal of Membrane Science,2008,320(1-2):185-190. |
| [3] | Le-Clech P;Chen V;Fane TAG .Fouling in membrane bioreactors used in wastewater treatment[J].Journal of Membrane Science,2006(1/2):17-53. |
| [4] | Ewan McAdam;Simon J. Judd;Rene Gildemeister;Anja Drews;Matthias Kraume .Critical analysis of submerged membrane sequencing batch reactor operating conditions[J].Water research: A journal of the international water association,2005(16):4011-4019. |
| [5] | Paul Schoeberl;Mounir Brik;Marina Bertoni;Rudolf Braun;Werner Fuchs .Optimization of operational parameters for a submerged membrane bioreactor treating dyehouse wastewater[J].Separation and Purification Technology,2005(1):61-68. |
| [6] | V. Calabro;S. Curcio;M.G. De Paola .Optimization of membrane bioreactor performances during enzymatic oxidation of waste bio-polyphenols[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2009(1/3):30-38. |
| [7] | 李金,王泽.浸没式超滤膜过滤器内流场的数值模拟[J].三峡大学学报(自然科学版),2010(03):14-17. |
| [8] | M. Brannock;Y. Wang;G. Leslie .Mixing characterisation of full-scale membrane bioreactors: CFD modelling with experimental validation[J].Water research: A journal of the international water association,2010(10):p.3181. |
| [9] | Wang Y;Brannock M;Leslie G et al.CFD simulations of membrane filtration zone in a submerged hollow fibre membrane bioreactor using a porous media approach[J].Journal of Membrane Science,2010,363(1-2):57-66. |
| [10] | 王福军.计算流体力学分析-CFD软件原理与应用[M].北京:清华大学出版社,2004 |
| [11] | 傅德熏;马延文.计算流体力学[M].北京:高等教育出版社,2002 |
| [12] | 谭立新,李开展,李博.平流二次沉淀池两相流二维数值模拟[J].西安理工大学学报,2009(02):197-201. |
| [13] | 曾光明,葛卫华,秦肖生,黄国和,李建兵.污水厂二维沉淀池水流和悬浮物运动数值模拟[J].中国环境科学,2002(04):338-341. |
| [14] | Taha T;Cheong WL;Field RW;Cui ZF .Gas-sparged ultrafiltration using horizontal and inclined tubular membranes - A CFD study[J].Journal of Membrane Science,2006(1/2):487-494. |
| [15] | 韩杰,朱彤,黄永刚,谢元华.浸没板式膜生物反应器中流体运动的数值模拟[J].化学与生物工程,2008(11):44-47. |
| [16] | LI Lin,QIU Xiu-yun,JIN Sheng,XIAO Jun,GONG Shou-yuan.WEAKLY SWIRLING TURBULENT FLOW IN TURBID WATER HYDRAULIC SEPARATION DEVICE[J].水动力学研究与进展B辑,2008(03):347-355. |
| [17] | 臧倩 .一体式膜生物反应器曝气方式的优化比较[D].天津大学,2007. |
| [18] | 冯民权,范术芳,郑邦民,邓宇.导流板的布置方式及其导流效果[J].武汉大学学报(工学版),2009(01):87-91,95. |
| [19] | 陈威,柳溪.氧化沟中导流墙二维水流流态模拟研究[J].市政技术,2011(01):110-113. |
| [20] | 任源,韦朝海,吴超飞,谢波,肖宏亮.气升式内循环反应器内的气含率与液体循环[J].华南理工大学学报(自然科学版),2002(03):72-77. |
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