Bioreactor MBR

Membrane-deaning strategies are numerous and generally remain proprietary information. Physical deaning by relaxation or backwashing is used on a frequent basis but the efficiency tends to decrease with filtration time. As irreversible fouling accumulates on the surface, chemical cleanings of various intensities (i.e., cleaner concentration used) can be applied on a weekly to yearly basis [20]. 

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Radjenovic J, Petrovic M, Barcelo D (2009) Fate and distribution of pharmaceuticals in wastewater and sewage sludge of the conventional activated sludge (CAS) and advanced membrane bioreactor (MBR) treatment. Water Res 43 831-841... 

By resorting to the so-called membrane recycle bioreactors (MBR) (Bubbico et al., 1997 Enzminger and Asenjo, 1986), continuous recycling of the culture broth through crossflow MF modules allows removal of the inhibiting metabolites, this helping to maximize cell density in the bioreactor, as well as bioproduct formation rate. Further ED treatment of MF permeates gives rise to two streams, a diluted one to be recycled back into the bioreactor, and a concentrated one to be supplementary refined. 

Kimura, K., Yamato, N., Yamamura, H. and Watanabe, Y. (2005) Membrane fouling in pilot-scale membrane bioreactors (MBRs) treating municipal wastewater. Environmental Science e[ Technology, 39, 6293-6299. 

More progresses can be anticipated in the near future by promoting the integration of different membrane operations, including MCs and membrane bioreactor (MBRs), also for wastewater treatment. 

Itonaga, T., Kimura, K. and Watanabe, Y. (2004) Influence of suspension viscosity and colloidal particles on permeability of membrane used in membrane bioreactor (MBR). Water Science and Technology, 50, 301-309. 

Wastewater treatment—biomass sedimentation using membrane bioreactors (MBRs), tertiary treatment of municipal waste for reuse,... 

In particular, membrane bioreactors (MBRs) are today robust, simple to operate, and ever more affordable. They take up little space, need modest technical support, and can remove many contaminants in one step. These advantages make it practical, for the first time, to protect public health and safely reuse water for non-potable uses. Membranes can also be a component of a multi-barrier approach to supplement potable water resources. Finally, decentralization, which overcomes some of the sustainability limits of centralized systems, becomes more feasible with membrane treatment. Because membrane processes make sanitation, reuse, and decentralization possible, water sustainability can become an achievable goal for the developed and developing worlds. 

The treatment and safe disposal of waste is equally important whether it be waste generated by the pulp and paper industry, by the leather industry or gaseous waste. Recently, in addition to other membrane-based processes, demand has grown in the wastewater treatment industry for a process that uses both a biological stage and a membrane module, known as the membrane bioreactor (MBR) process. The bioreactor and membrane module each have a specific function (1) the biological degradation... 

Acclimatized Removal Efficiencies for Foul Condensate Treatment by Membrane Bioreactor (MBR)... 

Germain E, Stephenson T, and Pearce P. Biomass characteristics and membrane aeration Toward a better understanding of membrane fouhng in submerged membrane bioreactors (MBRs). Biotechnol Bioeng. 2(X)5 90 316-322. 

Chu HP and Li XY. Membrane fouhng in a membrane bioreactor (MBR) Sludge cake formation and fouling characteristics. Biotechnol Bioeng. 2(K)5 90 323-31. 

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