Simulation for Sludge Flocculation I: Brownian Dynamic Simulation for Perikinetic Flocculation of Charged Particle
Joint Authors
Liu, Linshuang
Yang, Guolu
Yu, Minghui
Source
Mathematical Problems in Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-22
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
To investigate sludge drying process, a numerical simulation based on Brownian dynamic for the floc with uncharged and charged particles was conducted.
The Langevin equation is used as dynamical equation for tracking each particle in a floc.
An initial condition and periodic boundary condition which well conformed to reality is used for calculating the floc growth process.
Each cell consists of 1000 primary particles with diameter 0.1 ~ 4 μm.
Floc growth is related to the thermal force and the electrostatic force.
The electrostatic force on a particle in the simulation cell is considered as the sum of electrostatic forces from other particles in the original cell and its replicate cells.
It is assumed that flocs are charged with precharged primary particles in dispersion system by ionization.
By the analysis of the simulation figures, on one hand, the effects of initial particle size and sludge density on floc smashing time, floc radius of gyration, and fractal dimension were discussed.
On the other hand, the effects of ionization on floc smashing time and floc structure were presented.
This study has important practical value in the high-turbidity water treatment, especially for sludge drying.
American Psychological Association (APA)
Liu, Linshuang& Yang, Guolu& Yu, Minghui. 2012. Simulation for Sludge Flocculation I: Brownian Dynamic Simulation for Perikinetic Flocculation of Charged Particle. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-1001667
Modern Language Association (MLA)
Liu, Linshuang…[et al.]. Simulation for Sludge Flocculation I: Brownian Dynamic Simulation for Perikinetic Flocculation of Charged Particle. Mathematical Problems in Engineering No. 2012 (2012), pp.1-17.
https://search.emarefa.net/detail/BIM-1001667
American Medical Association (AMA)
Liu, Linshuang& Yang, Guolu& Yu, Minghui. Simulation for Sludge Flocculation I: Brownian Dynamic Simulation for Perikinetic Flocculation of Charged Particle. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-1001667
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1001667