Removal of organic micropollutants from domestic wastewater: The effect of ozone-based advanced oxidation process on nanofiltration

The objective of this study was to develop an innovative and advanced integrated “membrane oxidation” system for the treatment domestic wastewater by coupling membrane bioreactor (MBR), nanofiltration (NF) ozonation. Five contaminants were selected (acetaminophen, carbamazepin, sulfamethoxazole, tetracyclin terbutryn). MBR effluent samples have been fully characterized using conventional analysis (COD, TOC, UV254, ionic chromatography…) characterization analyses (3D fluorescence excitation–emission matrices (3DEEM)) before being spiked with 1 ppm each pharmaceuticals. NF process experiments carried out in batch semi-batch mode a flat sheet (NF-90). Selected OMPs well rejected (between 84 % 98 %) main fouling mechanisms observed pore blocking gel layer formation. then pre-treated ozonation pilot unit’s ozone gas inlet fixed at 5 g.Nm−3.The complete degradation carbamazepine sulfamethoxazole took 15–20 min more than 30 terbutryn. Acetaminophen, dissolved organic matter almost totally ozonated min. overall mineralization rate low. pre-ozonation enables resistance be decreased 40 %.