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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.9 P.1350-1358

http://doi.org/10.1631/jzus.A0820652


Characteristics of the dynamic distribution of suspended particles in the flocculation process


Author(s):  Jun NAN, Wei-peng HE, Juan-juan SONG, Gui-bai LI

Affiliation(s):  State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

Corresponding email(s):   nanjun11@163.com

Key Words:  Suspension particle, Particle counter, Flocculation process, Dynamic distribution


Jun NAN, Wei-peng HE, Juan-juan SONG, Gui-bai LI. Characteristics of the dynamic distribution of suspended particles in the flocculation process[J]. Journal of Zhejiang University Science A, 2009, 10(9): 1350-1358.

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author="Jun NAN, Wei-peng HE, Juan-juan SONG, Gui-bai LI",
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year="2009",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0820652"
}

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%A Juan-juan SONG
%A Gui-bai LI
%J Journal of Zhejiang University SCIENCE A
%V 10
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%@ 1673-565X
%D 2009
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820652

TY - JOUR
T1 - Characteristics of the dynamic distribution of suspended particles in the flocculation process
A1 - Jun NAN
A1 - Wei-peng HE
A1 - Juan-juan SONG
A1 - Gui-bai LI
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VL - 10
IS - 9
SP - 1350
EP - 1358
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820652


Abstract: 
Polyaluminium chloride (PAC) synthetic water was selected as a coagulant and kaolin suspension particles as objects to be removed. Online instruments such as the turbidimeter and particle counter were employed to monitor the flocculation process online and collect test data. The aim of the experiments was to study the dynamic distribution characteristics of suspension particles in the flocculation process. The 3D flow field in the reacting vessel was also simulated at different slow stirring speeds. The experiments showed that particle collision and aggregation in the flocculation process is in compliance with the Sutherland cluster aggregation model. This study further indicated that under appropriate hydrodynamic conditions, the distribution of turbulent flow in the reactor could be improved to increase the odds of effective particle collision and restrain the breakup of formed flocs by vortex shearing force. A good flocculation effect could therefore be produced.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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