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Membrane Water Treatment
  Volume 11, Number 2, March 2020 , pages 123-130

Performance evaluation of submerged membrane bioreactor for model textile wastewater treatment
Marwa Guembri, Neila Saidi, Mohamed Neifar, Atef Jaouani, Marc Heran and Hadda-Imene Ouzari

    Submerged Membrane bioreactor (SMBR) is one of the last techniques that allow a high quality of treated industrial effluents by coupling biological treatment and membrane separation. Thus, this research was an effort to evaluate performance of a SMBR treating a model textile wastewater (MTWW). Different SMBR operating parameters like mixed liquor suspended solids (MLSS) and Dissolved oxygen concentration, hydraulic retention time (HRT), and nutrients addition (N and P) have been investigated. MTWW (influent to the SMBR) was generated using the reactive azo-dye, Novacron blue FNG (100mg/L feed concentration). Results of MTWW treatment using SMBR under optimal operating conditions (MLSS, 4.2-13.3g/L; HRT, 4 days; pH, 6.9-7.2; conductivity, 400-900 µS/cm and temperature, 19.4-22.2 °C) showed that COD and blue colour treatment performances are between 94-98% and 30-80%, respectively. It is concluded that SMBR can be used in large scale textile wastewater treatment plants to improve effluent quality in order to meet effluent discharge standards.
Key Words
    dye removal; model textile dye wastewater; mixed liquor; submerged membrane bioreactor; wastewater treatment
Marwa Guembri, Mohamed Neifar, Atef Jaouaniand Hadda-Imene Ouzari: Laboratoire des Microorganismes et Biomolécules Actives (LR03ES03), Faculté des Sciences de Tunis,
Université de Tunis El Manar, 2092 Tunis, Tunisia
Neila Saidi:Centre de Recherches et des Technologies des Eaux, Laboratoire Eau, Membranes et Biotechnologies de l`Environnement (LR15CERTE04), Technopôle Borj-Cédria Route Touristique de Soliman BP 273-8020 Soliman, Tunisia
Mohamed Neifar: University of Manouba, ISBST, BVBGR-LR11ES31, Biotechpole of Sidi Thabet, Ariana, Tunisia
Marc Heran: Institut Européen des Membranes IEM, UMR-5635, Université Montpellier, ENSCM, CNRS,
Place Eugène Bataillon, 34095 Montpellier cedex 5, France

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