Influence of intermittent aeration and relaxation on a side-stream membrane bioreactor for municipal wastewater treatment

This paper is focusing on filtration of municipal wastewater with intermittent aeration and relaxation periods for a side-stream MBR in which filtration is performed with outside/in hollow-fibre membranes. In this semi-industrial scale side-stream MBR, hollow fibres are put in an external cartridge where sludge at low velocity and air are circulating around and inside the fibre bundle (in a confined system). Short-term experiments were performed under high fouling conditions but low energy consumption in order to determine and to characterise the influence on fouling of intermittent aeration and permeation. Discontinuous aeration is divided in two periods with two different air flow rates, a high one during a short duration and a lower one during a longer period. Relaxation was also studied by alternating on and off permeation periods. After that, aeration and permeation sequences were coupled. Results showed that for the same global air flow rate injected and for the same filtered volume, a punctually hi...

[1]  Tatsuki Ueda,et al.  Effects of aeration on suction pressure in a submerged membrane bioreactor , 1997 .

[2]  Anthony G. Fane,et al.  The effect of fibre diameter on filtration and flux distribution — relevance to submerged hollow fibre modules , 2001 .

[3]  El Hani Bouhabila,et al.  Fouling characterisation in membrane bioreactors , 2001 .

[4]  Sungpyo Hong,et al.  Fouling control in activated sludge submerged hollow fiber membrane bioreactors , 2002 .

[5]  Xia Huang,et al.  Effect of operational parameters on sludge accumulation on membrane surfaces in a submerged membrane bioreactor , 2003 .

[6]  Hang-Sik Shin,et al.  Sludge characteristics and their contribution to microfiltration in submerged membrane bioreactors , 2003 .

[7]  T. Arnot,et al.  In situ manipulation of critical flux in a submerged membrane bioreactor using variable aeration rates, and effects of membrane history , 2004 .

[8]  Jiti Zhou,et al.  Factors affecting the membrane performance in submerged membrane bioreactors , 2006 .

[9]  Pierre Le-Clech,et al.  Fouling in membrane bioreactors used in wastewater treatment , 2006 .

[10]  Vicki Chen,et al.  Fibre movement induced by bubbling using submerged hollow fibre membranes , 2006 .

[11]  Dominique Anne-Archard,et al.  Aeration mode, shear stress and sludge rheology in a submerged membrane bioreactor : some keys of energy saving , 2006 .

[12]  S Judd,et al.  The cost of a package plant membrane bioreactor. , 2007, Water research.

[13]  B. Lim,et al.  Effects of operational parameters on aeration on/off time in an intermittent aeration membrane bioreactor , 2007 .

[14]  B. Lesjean,et al.  Towards standardisation of the MBR technology , 2008 .

[15]  C. Cabassud,et al.  Fouling and its reversibility in relation to flow properties and module design in aerated hollow fibre modules for membrane bioreactors. , 2008, Water science and technology : a journal of the International Association on Water Pollution Research.

[16]  Richard M. Stuetz,et al.  Effects of relaxation and backwashing conditions on fouling in membrane bioreactor , 2008 .

[17]  Pierre Le-Clech,et al.  Novel filtration mode for fouling limitation in membrane bioreactors. , 2008, Water research.

[18]  You-yi Xu,et al.  A novel submerged rotating membrane bioreactor and reversible membrane fouling control , 2008 .