Water Science and Engineering 2017, 10(1) 53-58 DOI:   http://dx.doi.org/10.1016/j.wse.2017.03.002  ISSN: 1674-2370 CN: 32-1785/TV

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Keywords
Anaerobic baffled reactor
Froude dynamic similitude
Hydrodynamics
Prototype reactor
Dead space
Authors
Mehdi Hassanvand Jamadi
Abolghasem Alighardashi
PubMed
Article by Mehdi Hassanvand Jamadi
Article by Abolghasem Alighardashi

Application of Froude dynamic similitude in anaerobic baffled reactors to prediction of hydrodynamic characteristics of a prototype reactor using a model reactor

Mehdi Hassanvand Jamadi, Abolghasem Alighardashi*

Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran 1658953571, Iran

Abstract

An anaerobic baffled reactor is a system developed in recent decades and has been used as part of the treatment of high-strength wastewater. Since the function of this system is based on its hydrodynamic features, hydrodynamics and the regime of the flow through the reactor are crucial. In this study, a prototype reactor with eight chambers, which have a total volume of 48 L, and a model reactor, whose dimensions were half of those of the prototype reactor, were used. The Froude dynamic similitude in these reactors was investigated. The results show that the curve dimensionless variances were 0.089 and 0.096 for the prototype and model reactors, respectively, the short-circuiting indices were 0.483 and 0.489 for the prototype and model reactors, respectively, the effective volume and short-circuiting index measurement error was 1%, the hydraulic efficiency error was 2%, and the Peclet and dispersion number error was 7%. Most of the compared indices were close to one another in value. Therefore, the model reactor can be used based on the Froude dynamic similitude to determine hydrodynamic characteristics of a baffled reactor at a full scale.

Keywords Anaerobic baffled reactor   Froude dynamic similitude   Hydrodynamics   Prototype reactor   Dead space  
Received 2016-03-06 Revised 2016-07-28 Online: 2017-01-31 
DOI: http://dx.doi.org/10.1016/j.wse.2017.03.002
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Corresponding Authors: Abolghasem Alighardashi
Email: a_ghardashi@sbu.ac.ir
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