@misc{10481/57479,
year = {2019},
month = {8},
url = {http://hdl.handle.net/10481/57479},
abstract = {Numerous studies have analyzed the viability of the biodegradation and removal of
different compounds of emerging concern in biological systems for wastewater treatment. However,
the effect on the heterotrophic biomass of organic matter removal is sometimes missed. The aim
of the present research was to study the effect of the addition of a mix of three pharmaceuticals
(carbamazepine, ciprofloxacin, and ibuprofen) on the behavior of the biomass in two different
membrane-based biological systems treating urban wastewater. The present research studied a
membrane bioreactor (MBR) pilot plant operating at a similar mixed liquor suspended solids (MLSS)
concentration (about 5.5 g/L). This system works as an MBR and is combined with a moving bed
biofilm reactor (MBBR-MBR) to treat real urban wastewater at 6 and 10 h of hydraulic retention time
(HRT) under three different shocks of pharmaceuticals with increasing concentrations. In all cases,
the organic matter removal was, in average terms, higher than about 92% of biochemical oxygen
demand on the fifth day (BOD5), 79% of chemical oxygen demand (COD), and 85% of total organic
carbon (TOC). Nevertheless, the removal is higher in the MBBR-MBR technology under the same
HRT and the MLSS is similar. Moreover, the removal increased during the shock of pharmaceutical
compounds, especially in the MBR technology. From a kinetic perspective, MBBR-MBR is more
suitable for low HRT (6 h) and MBR is more effective for high HRT (10 h). This could be due to the fact
that biofilm systems are less sensitive to hostile environments than the MBR systems. The removal of
N-NH4
+ decreased considerably when the pharmaceutical compounds mix was introduced into the
system until no removal was detected in cycle 1, even when biofilm was present.},
organization = {This research was funded by EMASAGRA, project number C-4265-00.},
publisher = {MDPI},
keywords = {Heterotrophic kinetics},
keywords = {Membrane bioreactor},
keywords = {Pharmaceutical shock},
keywords = {Nitrogen},
title = {Heterotrophic Kinetic Study and Nitrogen Removal of a Membrane Bioreactor System Treating Real Urban Wastewater under a Pharmaceutical Compounds Shock: Effect of the Operative Variables},
doi = {10.3390/w11091785},
author = {Monteoliva Garcia, Antonio and Leyva Díaz, Juan Carlos and Lopez Lopez, Cristina and Poyatos Capilla, José Manuel and Muñio Martínez, María Del Mar and Martín Pascual, Jaime},
}