Water treatment intensification using a monophasic hybrid process coupling nanofiltration and ozone/hydrogen peroxide advanced oxidation

• A hybrid process coupling nanofiltration and ozonation was assessed. pre-ozonated solution mixed to the water treat doped with H 2 O . Two pharmaceuticals were efficiently removed in both retentate permeate. Membrane fouling decreased by a factor two using river sample. Organic membranes not degraded oxidants water. This study assesses feasibility of designing / membrane that can simultaneously oxidize reject contaminants while exhibiting reduced fouling. An innovative monophasic configuration, which at cell inlet be treated (at equimolar concentrations 3 ), implemented, allowing avoid an ozone-enriched gas flow cell. Thus, commercial polymer membranes, NP10 (polyethersulfone) NF270 (polyamide), assessed cross-flow configuration despite their low-ozone compatibility compared ceramic membranes. Ozone removal yields>90% obtained whatever studied matrix. Fast ozone decomposition initiation reactions some moieties natural organic matter responsible for low lifetime liquid bulk, protect from radicals. Deethylatrazine (DEA) used as radical tracer, determine R ct values orders magnitude 10 -6 -7 drinking sample, respectively. The pharmaceuticals, carbamazepine sulfamethoxazole, permeate lower than detection limit when PES tested. During treatment dropped there no alteration PA Finally, thanks synergistic effects induced contaminant oxidation rejection, dissolved content DEA around 70% membrane, tighter microstructure PES, used.