This paper focuses on hydrodynamic research aiming at the short-circuit evaluation of five different outlet configurations through the compartments of a mechanical flocculation unit of vertical shaft with mixing paddles at pilot scale. The tests were carried out with two, three and four compartments, variable and constant velocity gradients, including alternating senses of paddle rotation (clockwise in the first compartment, anticlockwise in the following one and so on). The research pointed out that the relevance of outlet configuration increases with the reduction of the number of compartments. In opposite, the velocity gradient and the sense of the paddle rotation seem less significant features. These results suggest the possibility of a viable increasing of performance, with low financial investments, mainly for flocculation units with three or two compartments installed in overloaded water treatment plants.
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July 20 2015
Hydrodynamic evaluation of the influence of outlet configuration for mechanical flocculation facilities Available to Purchase
J. L. Cestari;
J. L. Cestari
1Department of Civil Engineering, Ilha Solteira Faculty, São Paulo State University, Ilha Solteira, São Paulo, Brazil
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T. Matsumoto;
T. Matsumoto
1Department of Civil Engineering, Ilha Solteira Faculty, São Paulo State University, Ilha Solteira, São Paulo, Brazil
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D. Gebara;
D. Gebara
1Department of Civil Engineering, Ilha Solteira Faculty, São Paulo State University, Ilha Solteira, São Paulo, Brazil
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M. Dall'Aglio Sobrinho;
M. Dall'Aglio Sobrinho
1Department of Civil Engineering, Ilha Solteira Faculty, São Paulo State University, Ilha Solteira, São Paulo, Brazil
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M. Libânio
2Department of Hydraulics and Water Resources, Engineering Faculty, Federal University of Minas Gerais, 6627 Antonio Carlos Avenue, Pampulha, Belo Horizonte, Brazil
E-mail: [email protected]
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Water Supply (2016) 16 (1): 17–25.
Article history
Received:
March 17 2015
Accepted:
July 07 2015
Citation
J. L. Cestari, T. Matsumoto, D. Gebara, M. Dall'Aglio Sobrinho, M. Libânio; Hydrodynamic evaluation of the influence of outlet configuration for mechanical flocculation facilities. Water Supply 1 February 2016; 16 (1): 17–25. doi: https://doi.org/10.2166/ws.2015.109
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