Modelling bioprocesses and membrane fouling in membrane bioreactor (MBR): A review towards finding an integrated model framework

Zuthi, M.F.R.; Ngo, Huu Hao; Guo, Wenshan

doi:10.1016/j.biortech.2012.04.090

Cited by 49 publications

(35 citation statements)

References 68 publications

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“…Actually, in the technical literature among the kinetic models, the hybrid models, which are basically a coupling of the ASMs and the SMP formation/degradation process, are also defined. In contrast to the kinetic models, the hybrid models enable describing the influences of SMPs in the biological processes and effluent quality [5]. Regarding the second approach of MBR models, i.e., membrane fouling ones, many mathematical modelling approaches have been considered to simulate the fouling phenomenon so far: some of them are basically straightforwardly based on solids-liquid separation and simulate filtration processes as ideal settler with unitary efficiency [22].…”

Section: Introductionmentioning

confidence: 99%

“…were not taken into account. Furthermore, phosphorus removal was not taken into account; such a fact is quite common in integrated MBR modeling studies where phosphorus removal is scarcely studied [5,26,27].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, aeration is used both to provide oxygen for maintaining activated sludge in suspension and to reduce fouling by scouring on the membrane surface [3]. A balance between flux, TMP, energy demand and cleaning frequency is crucial [4,5]. To date, many researchers have been working on membrane fouling in order to identify which factors affect this phenomenon and how to reduce the operating costs [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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The fouling phenomenon in membrane bioreactors: Assessment of different strategies for energy saving

Mannina

Cosenza

2013

Journal of Membrane Science

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a b s t r a c tMembrane fouling represents one of the major issues for a membrane bioreactor (MBR). Membrane fouling and high aeration requirements (for inducing shear stress to limit fouling) make MBR operation economically demanding due to high energy costs. Although several studies on MBR fouling have been performed, comprehensive knowledge on how to reduce membrane fouling and consequently save energy is still lacking.An integrated mathematical model for MBR is applied to a University of Cape Town membrane bioreactor with the final aim to reduce the energy costs. In particular, the influence of the aeration intensity, the duration of filtration/backwashing cycles, and the number of membrane cleanings are investigated. Five scenarios are analyzed and compared, each implementing different operating conditions. The features of the analyzed scenarios are quantified by employing Monte Carlo simulations and performance indices partially drawn from literature. The results provide insights about the role played by the main physical/chemical/biological processes in view of a system optimization. As expected, MBR operation at low air flow rate (qa) leads to a substantial reduction of the operational costs (specifically, 20% with respect to the suggested manufacturers ones in terms of qa). Despite such a reduction of qa, a good effluent quality is also obtained as an effect of a high biological cake thickness. Results also show that the values of filtration time (Tf) higher than those suggested by manufacturers (e.g., Tf ¼ 9 min) can be used to increase effluent quality. This study demonstrates that both energy savings and effluent quality can be improved by varying the operational variables with respect to those of the suggested manufacture. One of the main insights gained from this study is that the values of the operating variables (i.e., qa, Tb and Tf) suggested by the manufactures can be changed to obtain a system that still respects high effluent quality and is characterized by lower economical cost. The proposed modeling approach can be an useful tool for the optimization of the operating conditions in order to reduce the operational costs for MBR systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The fouling phenomenon in membrane bioreactors: Assessment of different strategies for energy saving

Mannina

Cosenza

2013

Journal of Membrane Science

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“…The biological and biochemical interactions that occur during membrane bioreactor processing and the physical and hydrodynamic processes of MBRs are very complex (see the review by Zuthi et al (2012) on modeling these processes in order to design and maintain efficient MBRs). While many of the bioprocesses resemble those that occur in conventional activated sludge (CAS) plants during steady state processing, they are influenced by physical and hydrodynamic parameters specifically associated with MBRs.…”

Section: Membrane Bioreactorsmentioning

confidence: 99%

Polioviruses and other Enteroviruses

Betancourt¹,

Shulman²

2019

Water and Sanitation for the 21st Century: Health and Microbiological Aspects of Excreta and Wastewater Management (Global Wate

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“…However, the widespread application of MBR is still hampered due to membrane fouling, which results in reduced productivity, additional operating cost, and extra energy consumption [2,3]. Significant efforts have been made for a better understanding of the complex membrane fouling mechanisms [3][4][5][6], and to develop efficient fouling-control strategies to maintain a high filtration performance [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of membrane filterability amelioration via tuning mixed liquor property by pre-ozonation

Liang¹,

Xiao²,

Wu³

et al. 2014

Journal of Membrane Science

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Modelling bioprocesses and membrane fouling in membrane bioreactor (MBR): A review towards finding an integrated model framework

Cited by 49 publications

References 68 publications

The fouling phenomenon in membrane bioreactors: Assessment of different strategies for energy saving

The fouling phenomenon in membrane bioreactors: Assessment of different strategies for energy saving

Polioviruses and other Enteroviruses

Mechanism of membrane filterability amelioration via tuning mixed liquor property by pre-ozonation

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