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Performance of a submerged membrane bioreactor for the aerobic treatment of abattoir wastewater |
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| Authors: | Keskes Sajiâa Hmaied Fatma Gannoun Hana Bouallagui Hassib Godon Jean Jacques Hamdi Moktar |
| Institution: | a Laboratoire d’Ecologie et de Technologie Microbienne (LETMi), Université de Carthage, INSAT, BP 676, 1080 Tunis, Tunisia b Laboratoire de microbiologie et biologie moléculaire, CNSTN, pôle technologique, 2020 Sidi Thabet, Tunisia c Laboratoire de Biotechnologie de l’Environnement (LBE), INRA, Narbonne, France |
| Abstract: | The performance of a submerged membrane bioreactor (SMBR) has been investigated for abattoir wastewater (AW) treatment. The chemical oxygen demand (COD) of permeate has not exceeded 25 mg L−1 providing an average COD removal of 98%. Microbiological analysis showed that the SMBR has allowed a complete removal of fecal coliforms, Listeria and Salmonella. A significant reduction in the excess biomass production was also observed. In fact, the yield of biomass production (Yobs) ranged between 0 and 0.106 g suspended solids/g COD removed.The study of the dynamic of bacterial communities using the single strand conformation polymorphism (SSCP) method showed a significant change in the population structure and revealed a correlation between the sludge production yield and the bacterial communities. |
| Keywords: | Abattoir wastewater Membrane bioreactor Sludge reduction Diversity Pathogens indicators |
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