(cest2017_01238) Combined application of membrane ultrafiltration, adsorption, and ultrasound irradiation for the removal of pharmaceutical compounds from real wastewater

摘要

The presence of emerging contaminants (ECs) inwater resources has raised a great concern in the lastdecades due to their persistence in the environment andtheir chronic toxicological and endocrine disrupting effectson terrestrial and aquatic organisms. Thus, advancedtreatment methods are necessary for the removal of thesecontaminants before wastewater reuse or disposal intoaquatic ecosystem. In the present study, the hybrid processUSAMe~R, which combines ultrasound irradiation (US),adsorption (A) and membrane filtration (Me), wasinvestigated for the removal of ECs from real wastewater.Three pharmaceutical compounds - diclofenac (DCF),carbamazepine (CBZ), and amoxicillin (AMX), werechosen for this study to represent highly consumed andfrequently detected pharmaceuticals in the aquaticenvironment. All three pharmaceuticals were spiked intoreal wastewater at two concentrations of 10 ppm and 100ppb. Membrane ultrafiltration and its combination with US(USMe) or adsorption (AMe) were also studied as controltests. The results obtained showed improvedpharmaceutical removals in the membrane ultrafiltrationprocess whenever an auxiliary treatment was employed.The degree of pharmaceutical removal was achieved in theorder: Me