Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (4): 67-71.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

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 )

PDF

650

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