化工进展

• 化工过程与装备 • 上一篇    下一篇

絮凝反应池中流体的CFD模拟及应用性能

吴  巍1,2,范志伟3,徐立群3,李鑫钢1,4,隋  红1,4   

  1. (1精馏技术国家工程研究中心,天津 300072;2北洋国家精馏技术工程发展有限公司,天津 300457; 3上海立源水处理技术有限责任公司,上海 201108;4天津大学化工学院,天津 300072)
  • 出版日期:2012-02-05 发布日期:2012-02-25

CFD simulation on fluid in flocculation tank and its application

WU Wei1,2,FAN Zhiwei3,XU Liqun3,LI Xingang1,4,SUI Hong1,4   

  1. (1National Engineering Research Center for Distillation Technology,Tianjin University,Tianjin 300072,China; 2Bei-yang Distillation Engineering Limited Company,Tianjin 300457,China;3Shanghai Leeya Water Treatment Technology Co. Ltd.,Shanghai 201100,China;4School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)
  • Online:2012-02-05 Published:2012-02-25

摘要: 絮凝反应是原水预处理工艺(混合-反应-沉淀)的重要环节,对整个工艺过程的水处理效果影响极大。本文针对絮凝反应过程中絮体颗粒生长所需的水力学条件,采用计算流体力学(CFD)软件分析了所设计搅拌絮凝反应池运行的可行性,通过控制絮体颗粒生长的流场,使絮体在其中可以生长至合适的尺度。研究结果表明,采用优化之后的反应设备,可以节约絮凝剂用量约20%,降低了生产费用,避免过量絮凝剂对水体造成的二次污染,并且提高了出水效果。

关键词: 水处理, 絮凝反应, 搅拌, 计算流体力学

Abstract: The flocculation is one of the important in water treatment process,i.e. mixing-flocculation-sedimentation. Based on flocculation mechanism,a stirred-reaction tank and a stirrer are designed to provide suitable hydraulics. Flow distribution in the tank was simulated by computational fluid dynamics(CFD) technique. About 20% of flocculants consumption is saved by using the stirred tank;secondary pollution induced by excessive flocculants is avoided,and the outflow quality is improved.

Key words: water treatment, flocculation, stirred, computational fluid dynamics(CFD)