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ABR反应器的结构参数对流动及混合特性的影响

许 明 冯 骞 刘伟京 涂 勇 蒋永伟 肖玉冰 李 军

许 明, 冯 骞, 刘伟京, 涂 勇, 蒋永伟, 肖玉冰, 李 军. ABR反应器的结构参数对流动及混合特性的影响[J]. 环境科学研究, 2014, 27(7): 758-762.
引用本文: 许 明, 冯 骞, 刘伟京, 涂 勇, 蒋永伟, 肖玉冰, 李 军. ABR反应器的结构参数对流动及混合特性的影响[J]. 环境科学研究, 2014, 27(7): 758-762.
XU Ming, FENG Qian, LIU Wei-jing, TU Yong, JIANG Yong-wei, XIAO Yu-bing, LI Jun. Influence of Structural Parameters of an ABR Reactor on Flow and Mixing Characteristics[J]. Research of Environmental Sciences, 2014, 27(7): 758-762.
Citation: XU Ming, FENG Qian, LIU Wei-jing, TU Yong, JIANG Yong-wei, XIAO Yu-bing, LI Jun. Influence of Structural Parameters of an ABR Reactor on Flow and Mixing Characteristics[J]. Research of Environmental Sciences, 2014, 27(7): 758-762.

ABR反应器的结构参数对流动及混合特性的影响

基金项目: 国家水体污染控制与治理科技重大专项(2011ZX0701003);国家自然科学基金项目(51208173)

Influence of Structural Parameters of an ABR Reactor on Flow and Mixing Characteristics

  • 摘要: 为了改善ABR反应器的设计和运行,在实验室条件下,通过CFD(computational fluid dynamics,计算流体力学)技术和RTD(停留时间分布)曲线测试技术,分析不同结构参数下ABR反应器的流动和混合特性. 在此基础上,结合理论分析,确定ABR的最佳隔室数量. 结果表明:在反应器有效容积不变的情况下,随着ABR反应器内隔室数量由3个增至6个,ABR反应器内死区容积所占比例由15.51%降至1.87%,Pez(Peclet准数)由8.47升至16.67,N(串联数)由4.80升至8.88;隔室数量由3个增至4个、4个增至5个、5个增至6个时,死区容积所占比例的降幅分别为44.00%、74.50%、15.40%,Pez的增幅分别为36.88%、42.17%、32.57%,而N的增幅则分别为36.07%、1.95%、1.67%. 与5个隔室的ABR反应器相比,6个隔室的ABR反应器在死区容积所占比例、Pez和N等指标上尽管有所改善,但改善幅度已显著降低. 通过理论分析与混合参数模拟结果相结合,共同确定ABR反应器的最佳隔室数量为4个或5个.

     

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出版历程
  • 收稿日期:  2013-10-15
  • 修回日期:  2014-03-12
  • 刊出日期:  2014-07-25

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