Development of a Submerged Membrane Bioreactor simulator: a useful tool for teaching its functioning

Hernández, Yusmel González; Haza, Ulises Javier Jáuregui; Albasi, Claire; Alliet-Gaubert, Marion

doi:10.1016/j.ece.2014.03.001

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…When designing, upgrading, retrofitting, operating and controlling wastewater treatment plants, consultant engineers are finding computer modelling and simulation of these plants and their specific technologies, such as MBRs, increasingly useful [22]. The work presented here used a simulator developed by González-Hernández et al [23] by implementing the integrated model of an SMBR proposed by Zarragoitia et al [24]. The simulator structure and utilities enabling the experiments to be run in silico are described in the following subsections.…”

Section: Methodsmentioning

confidence: 99%

“…The SMBR computer simulator was initially intended to be used in teaching and research. The simulator graphical interface was built using the facilities provided by Delphi 2009 for object-oriented programming, in order to achieve a friendly graphical interface enabling the assignation and manipulation of different operating parameters, as well as observation of how the variables of interest behave over time [23]. A better description of the simulator can be found in González-Hernández et al work [23].…”

Section: Description Of the Smbr Simulatormentioning

confidence: 99%

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Understanding the influence of operating parameters through in silico optimization of energy consumption of submerged membrane bioreactor for urban wastewater treatment

Hernández

Haza

Albasi

et al. 2016

Desalination and Water Treatment

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International audienceMembrane bioreactor technology has become relatively widespread as an advanced treatment for both industrial and municipal wastewaters. The main problem of these installations is that they do not operate at the maximum of their potential, mainly because of membrane fouling. Experimental research with this kind of installation requires resources and is time consuming. The use of a computer simulator, as in the present work, allows the fouling behaviour in a bench-scale submerged membrane bioreactor to be investigated over a wide range of operating parameters: average specific aeration intensity (0.041–0.277 L m−2 s−1), filtration flux (0.032–0.160 m3 m−2 d−1) and filtration and coarse bubble aeration cycles (filtration and aeration times: 60–1080 s, with/without ratio: 0.33/10). A quadratic optimization method applied to the energy consumption (EC) was first carried out: minimum values of 0.27 and 0.32 kW h m−3 were obtained for EC in the sequential and non-sequential operating modes, respectively. Using the optimal operating conditions and the most influent parameters found in the first part, the second part details their influence on both membrane fouling and EC for each operating mode. The mean filtration flux and the mean aeration intensity have opposite effects on fouling and EC, which implies that a more global, economic optimization, including chemical cleaning, is needed. The detailed study of filtration and coarse bubble aeration cycles showed that they had little influence for a with/without ratio superior to 1. Using the quadratic optimization method with in silico experiments gave reliable first approximation results

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Section: Methodsmentioning

confidence: 99%

Section: Description Of the Smbr Simulatormentioning

confidence: 99%

Understanding the influence of operating parameters through in silico optimization of energy consumption of submerged membrane bioreactor for urban wastewater treatment

Hernández

Haza

Albasi

et al. 2016

Desalination and Water Treatment

Self Cite

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“…Although OTSs used in the traditional chemical process industries may be used to train operators of biorefineries, several distinct aspects of bioprocess operations make their direct application limited. The development and deployment of OTSs for use in biotechnological processes is therefore beginning to gain increasing academic interest . A discussion of the different classes of training simulators is presented by Hass …”

Section: Introductionmentioning

confidence: 99%

Operator training simulators for biorefineries: current position and future directions

Isimite

Baganz

Hass

2018

J of Chemical Tech & Biotech

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Recent technological advances in the development of alternative energy sources, including biofuels, for transportation and energy requirements have demonstrated the need for highly skilled engineers and operators in the biotechnological industries. Although operator training simulators (OTS) used in the traditional chemical process industries may be used to train biorefinery operators and engineers, several distinct aspects of bioprocess operations make their direct application limited. The development and deployment of OTSs for use in biotechnological processes is therefore beginning to gain increasing attention. This review paper examines the present status of OTS development and use in biorefineries, including future considerations on how an OTS may be used to improve operator competence, maximise biorefinery operational efficiencies and protect people and the environment. The general premise of an OTS is that model‐based operator training simulators can be used to verifiably enhance the training of industrial operators to run complex biorefineries. Only a few examples of the design and application of OTSs in large‐scale biorefineries have so far been reported. A discussion of the mathematical models used for OTS development is briefly presented, as well as available OTS design frameworks and vendors, including their benefits and drawbacks. The review concludes by looking at possible future directions of OTS development and use in biorefineries and their contribution in facilitating the transition to a bio‐based economy. © 2018 Society of Chemical Industry

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Using Mathcad to facilitate the design of chemical reactors involving multiple reactions

Cuadri

Martín‐Alfonso

Urbano

2019

Comp Applic In Engineering

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The pedagogy of teaching chemical reaction engineering is continually advancing through the use of new computational tools and, therefore, the integration of these new tools into the Chemical Engineering degree is challenging. This paper reports an educational experience dealing with the use of Mathcad software to complement and to facilitate the design of chemical reactors involving multiple reactions. A continuous stirred‐tank reactor taking place series reactions and two reactors (continuous stirred‐tank reactor or plug flow reactor) arranged in series involving parallel reactions were presented as case studies. This experience, which was carried out with the third‐year chemical engineering students enrolled in the chemical reactors course, revealed that Mathcad facilitates the understanding of the theoretical concepts related to multiple reactions and also reduces the complexity of mathematical calculation to a minimum. Thus, the use of this computer tool allows the teacher (a) to delve deeper into more issues related to the design of chemical reactors, and (b) to consider this tool perfectly useful for other courses corresponding to the Chemical Engineering degree.

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Development of a Submerged Membrane Bioreactor simulator: a useful tool for teaching its functioning

Cited by 7 publications

References 25 publications

Understanding the influence of operating parameters through in silico optimization of energy consumption of submerged membrane bioreactor for urban wastewater treatment

Understanding the influence of operating parameters through in silico optimization of energy consumption of submerged membrane bioreactor for urban wastewater treatment

Operator training simulators for biorefineries: current position and future directions

Using Mathcad to facilitate the design of chemical reactors involving multiple reactions

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