华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (4): 67-71.

• 化学化工 • 上一篇    下一篇

波纹斜槽板沉降器中的旋流絮凝特性

周少基 郭祀远 李琳   

  1. 华南理工大学 轻化工研究所,广东 广州 510640
  • 收稿日期:2006-10-28 出版日期:2007-04-25 发布日期:2007-04-25
  • 通信作者: 周少基(1960-),男,博士生,广西大学副教授,主要从事分离提纯新技术研究. E-mail:shaojiz@tom.com
  • 作者简介:周少基(1960-),男,博士生,广西大学副教授,主要从事分离提纯新技术研究.
  • 基金资助:

    高等学校博士学科点专项基金资助项目(20050561014 )

Vortex Flocculation in Settling Clarifier with Corrugated Inclined Trough

Zhou Shao-ji  Guo Si-yuan  Li Lin   

  1. Research Institute of Light Industry and Chemical Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-10-28 Online:2007-04-25 Published:2007-04-25
  • Contact: 周少基(1960-),男,博士生,广西大学副教授,主要从事分离提纯新技术研究. E-mail:shaojiz@tom.com
  • About author:周少基(1960-),男,博士生,广西大学副教授,主要从事分离提纯新技术研究.
  • Supported by:

    高等学校博士学科点专项基金资助项目(20050561014 )

摘要: 介绍了一种新型的快速波纹斜槽板沉降器,从理论上分析了波纹斜槽板中旋流的形成机制,推导出了抖槽区旋流絮凝反应速度的表达式,并通过实验研究了悬浮液流经波纹斜槽的絮凝规律,经数据回归得到了相应的絮凝反应方程.文中还讨论了流体流速对悬浮颗粒在波纹槽中的絮凝度的影响以及旋流絮凝作用对絮凝体压缩度的影响.实验结果表明,当流速小于30mm/ s 时,絮凝速度常数k 平均达0.00224.

关键词: 沉降器, 波纹件槽板, 微旋流, 絮凝

Abstract:

A novel rapid sett1ing clarifier with corrugated inclined trough was introduced in this paper. The vortex flow inside the inclined trough was theoretically analyzed , and a formula was deduced to determine the flocculation rate caused hy the vortex flow. Then , an experiment was performed to investigate the floccul ation regularity of sus-pension flowing through the trough. Moreover , a model that accords with the flocculation was regressed with the ex-perimental data. The variation of the flocculation constant with the flow velocity and the effect of flocculation on the compressihility of the flocs were finally discussed. It is found that , at a flow velocity of less than 30 mm/s , the measured mean flocculation constant reaches 0.00224.

Key words: settling clarifier, corrugated inclined trough, micro-vortex flow, flocculation