TY - JOUR T1 - Controlling micropollutants in tertiary municipal wastewater by O3/H2O2, granular biofiltration and UV254/H2O2 for potable reuse applications. AU - Piras,F, AU - Santoro,O, AU - Pastore,T, AU - Pio,I, AU - De Dominicis,E, AU - Gritti,E, AU - Caricato,R, AU - Lionetto,M G, AU - Mele,G, AU - Santoro,D, Y1 - 2019/08/27/ PY - 2019/06/28/received PY - 2019/08/12/revised PY - 2019/08/20/accepted PY - 2019/9/13/pubmed PY - 2020/1/22/medline PY - 2019/9/13/entrez KW - Advanced oxidation processes KW - Biofiltration KW - Micropollutants KW - Potable reuse KW - Wastewater SP - 124635 EP - 124635 JF - Chemosphere JO - Chemosphere VL - 239 N2 - A comprehensive pilot study was carried out to experimentally assess the potential of newly developed treatment trains integrating two-stage AOPs and biofiltration to reach potable reuse water quality standards from municipal wastewater. The processes consisted of a two-stage AOPs with (carbon or limestone) biofiltration, the first AOP (O3/H2O2) serving as pre-treatment to biofiltration and the second AOP (UV254/H2O2) serving as post-biofiltration finishing step to ensure advanced disinfection. A comprehensive monitoring campaign was put in place resulting from the combination of targeted, non-targeted and suspect screening measurements. It was found that 13 organic micropollutants were detected from a list of 219 suspects although at ng/L level only. For the treatment conditions piloted in this study (O3 = 13 ± 0.5 mg/L, H2O2 = 11 ± 0.4 mg/L for the O3/H2O2 process, and UV = 410 ± 63.5 mJ/cm2, H2O2 = 5 mg/l for the UV254/H2O2 process), it was possible to estimate the overall removal efficacy for each unit process, which was found to follow this order: RO (99%) > BAC (87%) > O3-H2O2 (78%) > BAL (67%) > UV/H2O2 (43%) > AOP contact chamber (19%) > UF(0%), with the treatment train integrating two AOPs and granular biofiltration with activated carbon (O3/H2O2 + BAC + UV254/H2O2) showing superior performance with a 99% abatement in total micropollutants. No ecotoxicologically-positive response was generally observed for any of the effluent samples from the tested trains, even when pre-concentration factors up to 100-1000 times were employed to increase the sensitivity of the bioassay methods. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31514013/Controlling_micropollutants_in_tertiary_municipal_wastewater_by_O3/H2O2_granular_biofiltration_and_UV254/H2O2_for_potable_reuse_applications_ DB - PRIME DP - Unbound Medicine ER -