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Application of Anaerobic Membrane Bioreactor  409


                  Number of articles published in peer-reviewed journals
                   60


                   50


                   40


                   30


                   20


                   10


                    0
                      2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
                                               Year
                                           UASB   AnMBR
              Figure 10.5 Number of articles published in journals on AnMBR and UASB. Source:
              Visvanathan and Amila (2012).

              of journal publications on AnMBR has been mounting. On the other hand,
              studies on UASB have not grown that much.
                 Several laboratory-scale experiments have been conducted by different
              scientists treating synthetic and domestic wastewater to investigate the per-
              formance of an anaerobic MBR. Table 10.2 presents some literature about
              the application of AnMBRs for the treatment of different types of wastewa-
              ter as well as information regarding the biological performance using various
              parameters such as temperature, mixed liquor suspended solids (MLSS), and
              organic loading rate (OLR) in the AnMBR. The chemical oxygen demand
              (COD) and BOD removals reported for various types of wastewaters have
              generally exceeded those reported from the operation of conventional
              anaerobic systems. Saddoud and Sayadi (2007) investigated the treatability
              of slaughterhouse wastewater by an AnMBR at relatively high OLRs
                                           3
              between 4.4 and 13.3 kg COD/m /day. They experienced a process failure
                                         3
              at an OLR of 16.3 kg COD/m /day due to VFA accumulation.
                 Li-Mei Yuan et al. (2007) found that the AnMBR exhibited high per-
              formance in removing carbon, nitrogen, and phosphorous simultaneously.
              Under favorable operational conditions, the removal efficiencies for COD,
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