An innovative wastewater treatment technology based on UASB and IFAS for cost-efficient macro and micropollutant removal

Journal of Hazardous Materials
A AriasF Omil

Abstract

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 o...Continue Reading

Citations

Aug 23, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Jianmin WangChin-Pao Huang
Apr 12, 2020·Environmental Science and Pollution Research International·Erick Centeno-MoraCarlos de Lemos Chernicharo
Jan 6, 2021·The Science of the Total Environment·Vitória L LourosHelena G A Nadais
Jun 9, 2020·Journal of Environmental Management·Sharjeel WaqasMuhammad Aslam
Jul 31, 2020·Journal of Hazardous Materials·Miguel Martínez-QuintelaFrancisco Omil
Apr 28, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·M J Moya-LlamasD Prats
Dec 28, 2019·Journal of Hazardous Materials·Rodrigo B CarneiroJuan M Lema
May 16, 2021·Environmental Research·José Gilmar da Silva do NascimentoPaulo Igor Milen Firmino
Jun 28, 2019·Environmental Science & Technology·Akashdeep Singh OberoiHui Lu

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