Potential and drawbacks of microbiology–membrane interaction in membrane bioreactors

Drews, Anja; Evenblij, H.; Rosenberger, S.

doi:10.1002/ep.10113

Cited by 27 publications

(8 citation statements)

References 34 publications

(39 reference statements)

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“…In MBR process, however, higher MLSS concentrations give rise to high and non-Newtonian viscosities which impeded oxygen transfer and require more energy for pumping [18][19][20]. Therefore, lower biomass concentration is currently employed.…”

Section: Operation Of Mbrsmentioning

confidence: 98%

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Effect of hydraulic retention time on membrane fouling and biomass characteristics in submerged membrane bioreactors

Meng

Shi

Yang

et al. 2007

Bioprocess Biosyst Eng

150

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In this paper, three identical membrane bioreactors (MBRs) were operated in parallel in order to specify the influence mechanism of hydraulic retention time (HRT) on MBR. The results showed that the removal efficiency of chemical oxygen demand (COD) was stable though it decreased slightly as HRT decreased, but biomass activity and dissolved oxygen (DO) concentration in sludge suspension decreased as HRT decreased. The filamentous bacteria grew easily with decreasing HRT. The extracellular polymeric substances (EPS) concentration and sludge viscosity increased significantly as filamentous bacteria excessively grew. The over growth of filamentous bacteria, the increase of EPS and the decrease of shear stress led to the formation of large and irregular flocs. Furthermore, the mixed liquid suspended solids (MLSS) concentration and sludge viscosity increased significantly as HRT decreased. The results also indicated that sludge viscosity was the predominant factor that affecting hydrodynamic conditions of MBR systems.

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Section: Operation Of Mbrsmentioning

confidence: 98%

“…Significant increases of MLSS concentration and viscosity of the sludge suspension in an MBR have often been reported when municipal wastewater was treated [19,42]. Figures 7 and 8 show the evolution of sludge concentration and sludge viscosity with operation time.…”

Section: Evolution Of Mlss Concentration and Dynamic Viscositymentioning

confidence: 99%

Effect of hydraulic retention time on membrane fouling and biomass characteristics in submerged membrane bioreactors

Meng

Shi

Yang

et al. 2007

Bioprocess Biosyst Eng

150

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“…Measurement index is TP. In order to further study the results [11] , in this paper, three groups of experimental equipment are set up to dealing with sewage. The concentration range of domestic sewage is According to the results, the concentration of pollutants in the three groups devices are gradually increasing.…”

Section: Wastewater Indexmentioning

confidence: 99%

The Efficiency Simulation of the Performance of a Sequencing Batch Biofilm Reactor for Purification of Domestic Sewage based on the Artificial Neural Network

Shang¹,

Wu²

2017

MMC_C

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Today, People's living environment in the rapid development of the industry has become a problem that can not be ignored. In order to alleviate the current situation of water pollution, this paper will make a research on it. The artificial neural network model is established based on the water quality characteristics of the domestic sewage. According to the structure of the model, the experimental device is designed to determine the weight of indicators in domestic sewage, and the experimental study is carried out. By comparing the simulated values and predicted values of 6 groups, then there is the following conclusion: through the system filter, the water quality of the effluent can reach the standard (GB18918-2002). A further analysis of the results, the conclusion that the sequencing batch biofilm reactor of the artificial neural network has a better performance in the purification of domestic sewage can be got. In order to guarantee the stability of the system, the performance is evaluated. Then there is the following conclusion: the simulation performance of the system is within the standard error range. The research of this paper has laid a foundation for the development of domestic sewage purification technology.

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“…Besides phosphorus precipitation, enhanced biological phosphorus removal (EBPR) can be implemented, which requires an additional anaerobic process step. Some characteristics of MBR technology render EBPR in combination with post-denitrification as an attractive alternative that achieves very low nutrient effluent concentrations (Drews et al, 2005b).…”

Section: Historical Developmentmentioning

confidence: 99%

Membrane Biological Reactors

Hai

Yamamoto

2011

Treatise on Water Science

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Potential and drawbacks of microbiology–membrane interaction in membrane bioreactors

Abstract: In membrane bioreactors (MBRs), biomass and membranes interact in a number

Cited by 27 publications

References 34 publications

Effect of hydraulic retention time on membrane fouling and biomass characteristics in submerged membrane bioreactors

Effect of hydraulic retention time on membrane fouling and biomass characteristics in submerged membrane bioreactors

The Efficiency Simulation of the Performance of a Sequencing Batch Biofilm Reactor for Purification of Domestic Sewage based on the Artificial Neural Network

Membrane Biological Reactors

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