scholarly journals Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment: A Literature Review

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 967
Author(s):  
Yerkanat N. Kanafin ◽  
Dinara Kanafina ◽  
Simos Malamis ◽  
Evina Katsou ◽  
Vassilis J. Inglezakis ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Retention Time ◽  
Membrane Bioreactor ◽  
Volatile Fatty Acids ◽  
Municipal Wastewater ◽  
Organic Loading Rate ◽  
Municipal Wastewater Treatment ◽  
Promising Alternative ◽  
Anaerobic Membrane Bioreactor ◽  
Treatment Technologies

Currently, there is growing scientific interest in the development of more economic, efficient and environmentally friendly municipal wastewater treatment technologies. Laboratory and pilot-scale surveys have revealed that the anaerobic membrane bioreactor (AnMBR) is a promising alternative for municipal wastewater treatment. Anaerobic membrane bioreactor technology combines the advantages of anaerobic processes and membrane technology. Membranes retain colloidal and suspended solids and provide complete solid–liquid separation. The slow-growing anaerobic microorganisms in the bioreactor degrade the soluble organic matter, producing biogas. The low amount of produced sludge and the production of biogas makes AnMBRs favorable over conventional biological treatment technologies. However, the AnMBR is not yet fully mature and challenging issues remain. This work focuses on fundamental aspects of AnMBRs in the treatment of municipal wastewater. The important parameters for AnMBR operation, such as pH, temperature, alkalinity, volatile fatty acids, organic loading rate, hydraulic retention time and solids retention time, are discussed. Moreover, through a comprehensive literature survey of recent applications from 2009 to 2021, the current state of AnMBR technology is assessed and its limitations are highlighted. Finally, the need for further laboratory, pilot- and full-scale research is addressed.

scholarly journals Brief review of operation of anaerobic wastewater treatment with membrane bioreactors

2019 ◽  
Vol 86 ◽  
pp. 00020
Author(s):  
Zbigniew Mucha ◽  
Włodzimierz Wójcik ◽  
Michał Polus
Keyword(s):  
Wastewater Treatment ◽  
Energy Demand ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Anaerobic Treatment ◽  
Membrane Bioreactors ◽  
Current Status ◽  
Municipal Wastewater Treatment ◽  
Anaerobic Membrane Bioreactor

In recent years, anaerobic membrane bioreactor (AnMBR) technology has been considered as a very appealing alternative for wastewater treatment due to its significant advantages over conventional anaerobic treatment and aerobic membrane bioreactor (MBR) technology. The paper provides an overview of the current status of the anaerobic membrane bioreactor technology with a special emphasis on its performance and drawbacks when applied for domestic and municipal wastewater treatment. According to the reported data, the renewable energy produced at the plants (i.e. from methane) covered the energy demand for membrane filtration while the excess energy can be further utilized. Anaerobic membrane bioreactors are an attractive technology that needs further research efforts and applications at an industrial scale.

scholarly journals ESTABLISHING A KINETIC EQUATION TO ESTIMATE SLUDGE PRODUCTION IN MUNICIPAL WASTEWATER TREATMENT BY MEMBRANE BIOREACTOR

2011 ◽  
Vol 14 (1) ◽  
pp. 56-64
Author(s):  
Uan Khac Do ◽  
Banu J. Rajesh ◽  
Ick T. Yeom
Keyword(s):  
Wastewater Treatment ◽  
Kinetic Equation ◽  
Retention Time ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Biomass Concentration ◽  
Municipal Wastewater Treatment ◽  
Decay Coefficient ◽  
Theoretical Yield ◽  
Sludge Production

Sludge production in the membrane bioreactor treating municipal wastewater can be estimated from the kinetic equation which describes a relationship between sludge concentration and substrate, decay coefficient, sludge retention time and hydraulic retention time. Based on the experimental data and using the mathematical approximate method, the theoretical yield factor (Y) and the decay coefficient (kd) were found to be 0.33 mg VSS/mg COD and 0.04 1/day, respectively. Sludge production in the system can be estimated from the obtained kinetic equation. The calculated values were fluctuated around the measured ones. This result proved the potential application of the obtained equation for estimation of the biomass concentration and kinetic parameters in the wastewater treatment systems using membrane bioreactor technology.

scholarly journals Micropollutants removal in an anaerobic membrane bioreactor and in an aerobic conventional treatment plant

2012 ◽  
Vol 65 (12) ◽  
pp. 2242-2250 ◽  
Author(s):  
M. R. Abargues ◽  
A. Robles ◽  
A. Bouzas ◽  
A. Seco
Keyword(s):  
Wastewater Treatment ◽  
Retention Time ◽  
Wastewater Treatment Plant ◽  
Pilot Plant ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Solid Retention Time ◽  
Aerobic Conditions ◽  
Anaerobic Membrane Bioreactor

The paper expresses an attempt to tackle the problem due to the presence of micropollutants in wastewater which may be able to disrupt the endocrine system of some organisms. These kinds of compounds are ubiquitously present in municipal wastewater treatment plant (WWTP) effluents. The aim of this paper is to compare the fate of the alkylphenols–APs (4-(tert-octyl)) phenol, t-nonylphenol and 4-p-nonylphenol and the hormones (estrone, 17β-estradiol and 17α-ethinylestradiol) in a submerged anaerobic membrane bioreactor (SAMBR) pilot plant and in a conventional activated sludge wastewater treatment plant (CTP). The obtained results are also compared with the results obtained in a previous study carried out in an aerobic MBR pilot plant. The results showed that the APs soluble concentrations in the SAMBR effluent were always significantly higher than the CTP ones. Moreover, the analyses of the suspended fraction revealed that the AP concentrations in the SAMBR reactor were usually higher than in the CTP reactor, indicating that under anaerobic conditions the APs were accumulated in the digested sludge. The aerobic conditions maintained both in the CTP system and in the aerobic MBR favoured the APs and hormones degradation, and gave rise to lower concentrations in the effluent and in the reactor of these systems. Furthermore, the results also indicated that the degradation of APs under aerobic conditions was enhanced working at high solid retention time (SRT) and hydraulic retention time (HRT) values.

scholarly journals A pilot-scale anaerobic membrane bioreactor under short hydraulic retention time for municipal wastewater treatment: performance and microbial community identification

2017 ◽  
Vol 8 (1) ◽  
pp. 58-67 ◽  
Author(s):  
Xiaojie Mei ◽  
Zhiwei Wang ◽  
Yan Miao ◽  
Zhichao Wu
Keyword(s):  
Microbial Community ◽  
Retention Time ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Hydraulic Retention Time ◽  
Oxygen Demand ◽  
Pilot Scale ◽  
Municipal Wastewater Treatment ◽  
Term Operation ◽  
Anaerobic Membrane Bioreactor

Abstract Anaerobic membrane bioreactor (AnMBR) processes are a promising method of recovering energy from municipal wastewater. In this study, a pilot-scale AnMBR with extremely short hydraulic retention time (HRT = 2.2 h) was operated at a flux of 6 L/(m2h) for 340 days without any membrane cleaning. The average value achieved for chemical oxygen demand (COD) removal was 87% and for methane yield was 0.12 L CH4/gCODremoved. Based on mass balance analysis, it was found that about 30% of total influent COD was used for methane conversion, 15% of COD for sulfate reduction, 10% for biomass growth and 10–20% of COD remained in the effluent. Microbial community analyses indicated that seasonal changes of feedwater (in terms of organic components and temperature) led to the variations of microbial community structures. Among the bacterial communities, Chloroflexi, Proteobacteria and Bacteroidetes were the three most predominant phyla. In the archaeal consortia, WCHA1-57 and Methanobacterium surpassed Methanosaeta and Methanolinea to become the predominant methanogens during the long-term operation of short HRT. The sulfate-reducing bacteria, accounting for less than 2% of total abundance of bacteria, might not be the dominant competitor against methanogens.

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