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Construction of a New Membrane Bioreactor for Industrial Wastewater Treatment

Anvari, Arezoo | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44925 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Seifkordi, Ali Akbar; Hemati, Mohmoud; Rekabdar, Fatemeh
  7. Abstract:
  8. In recent years membrane bioreactors (MBR) were widely used as an advanced process for industrial wastewater treatment. But fouling issue causes some restrictions in these systems. So for fouling reduction many researches were done.In this study for fouling improvement, blending of hydrophilic polymer (PAN) with main polymer PVDF was used. Blending membrane in phase inversion process with DMAC as solvent and water as non-solvent was made. For pore-forming in membranes, PVP as hydrophilic additive with three different composition was added and then for more enhancement of antifouling property of membrane, TiO2 nanoparticles with four different composition were added to polymeric solution.Membrane morphology was characterized by SEM analysis and hydrophilicity/ hydrophobicity property of membranes were determined by contact angle test. Then EDX analysis was used for verification of dispersion quality and presence of PAN and TiO2. After that UF system for measurement of pure water flux and MWCO and fouling caused by BSA solution was used. As result, following membrane specifications was chosen as optimum specification:10 percent PAN and 4 percent PVP and 1 percent TiO2.Finally, optimized prepared membranes were put in MBR for verification of fouling by measuring critical flux with flux-stepping method. Experimental results proved positive effect of nanoparticles in membrane fouling reduction
  9. Keywords:
  10. Membranes ; PLUGGING ; Membrane Bioreactor ; Industrial Wastewaters ; Waste Treatment

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