RT Journal Article
T1 An innovative wastewater treatment technology based on UASB and IFAS for cost-efficient macro and micropollutant removal
A1 Arias Baño, Adrián
A1 Alvariño Pereira, Teresa
A1 Allegue Martínez, Tomás Francisco
A1 Suárez Martínez, Sonia
A1 Garrido Fernández, Juan Manuel
A1 Omil Prieto, Francisco
K1 Organic micropollutants
K1 Pharmaceuticals
K1 Redox conditions
K1 Methane emissions
K1 Hybrid process
AB An innovative process based on the combination of a UASB reactor and an IFAS system is proposed in order to combine different redox conditions and biomass conformations to promote a high microbial diversity. The objective of this configuration is to enhance the biological removal of organic micropollutants (OMPs) as well as to achieve the abatement of nitrogen by using the dissolved methane as an inexpensive electron donor. Results showed high removals of COD (93%) and dissolved methane present in the UASB effluent (up to 85%) was biodegraded by a consortium of aerobic methanotrophs and heterotrophic denitrifiers. Total nitrogen removal decreased slightly along the operation (from 44 to 33%), depending on the availability of electron donor, biomass concentration, and configuration (floccules and biofilm). A high removal was achieved in the hybrid system (>80%) for 6 of the studied OMPs. Sulfamethoxazole, trimethoprim, naproxen, and estradiol were readily biotransformed under anaerobic conditions, whereas ibuprofen or bisphenol A were removed in the anoxic-aerobic compartment. Evidence of the cometabolic biotransformation of OMPs has been found, such as the influence of nitrification activity on the removal of bisphenol A, and of the denitrification activity on ethinylestradiol removal
PB Elsevier
SN 0304-3894
YR 2018
FD 2018
LK http://hdl.handle.net/10347/25124
UL http://hdl.handle.net/10347/25124
LA eng
NO Journal of Hazardous Materials, 359 (2018), 113-120. https://doi.org/10.1016/j.jhazmat.2018.07.042
NO This research was supported by the Spanish Government (AEI) through the Project COMETT (CTQ2016-80847-R). The authors belong to the Galician Competitive Research GroupGRC-ED431C 2017/29 and to the CRETUS Strategic Partnership (AGRUP2015/02). All these programs and project are co-funded by FEDER (UE)
DS Minerva
RD 28 abr 2026