Moving bed membrane bioreactors for carbon and nutrient removal: The effect of C/N variation

Mannina, Giorgio; Ekama, George A.; Capodici, Marco; Cosenza, Alida; Trapani, Daniele Di; Ødegaard, Hallvard

doi:10.1016/j.bej.2017.05.005

Cited by 48 publications

(21 citation statements)

References 35 publications

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“…Furthermore, the nitrification (η nit ), denitrification (η denit ) and total nitrogen (η Ntotal ) removal efficiencies were evaluated according to (Mannina et al, 2017c). In order to discriminate between the COD removal due to the biological processes and the physical effect of membrane, the following removal efficiencies were evaluated according to (Mannina et al, 2017c): biological removal efficiency (η BIO ); physical removal efficiency (η PHYS ).…”

Section: Methodsmentioning

confidence: 99%

“…The ammonium chloride has been added only for the UCT-MBR plant during the experimental campaign at C/N equal to 5 mgCOD/mgN (Mannina et al, 2017b). While, the average inlet COD concentration for the IFAS-UCT-MBR was equal to 543 mg L −1 (56% coming from synthetic wastewater) and 864 mg L −1 (73% coming from synthetic wastewater) for the experimental phase at C/N equal to 5 and 10 mgCOD/mgN, respectively (Mannina et al, 2017c). The average inlet total nitrogen (TN) concentration for the IFAS-UCT-MBR was equal to 92 mg L −1 and 80 mg L −1 for the experimental phase at C/N equal to 5 and 10 mgCOD/mgN, respectively (Mannina et al, 2017c).…”

Section: The Pilot Plantmentioning

confidence: 99%

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Integrated fixed-film activated sludge membrane bioreactors versus membrane bioreactors for nutrient removal: A comprehensive comparison

Mannina

Ekama

Capodici

et al. 2018

Journal of Environmental Management

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This research elucidates the pollutants (nutrients and carbon) removal performance and nitrous oxide (NO) emissions of two pilot plants. Specifically, a University of Cape Town (UCT) Membrane Bioreactor (MBR) plant and an Integrated Fixed Film Activated Sludge (IFAS)-UCT-MBR plant were investigated. The plants were fed with real wastewater augmented with acetate and glycerol in order to control the influent carbon nitrogen ratio (C/N). The short-term effect of the inlet C/N ratio variation (C/N = 5 mgCOD/mgN and C/N = 10 mgCOD/mgN) on the behaviour of both plants was investigated. The results showed that the IFAS-UCT-MBR configuration provided the best performance in terms of pollutants removal at the two investigated C/N ratios. Furthermore, the lowest NO emission (with respect to the influent nitrogen) was observed in the IFAS-UCT-MBR configuration, thus suggesting a potential beneficial effect of the biofilm in the emission reduction. However, the membrane of the IFAS-UCT-MBR showed a greater fouling tendency compared to the UCT-MBR configuration. This result, likely related to the biofilm detached from carriers, could seriously affect the indirect GreenHouse Gas emissions due to the increase of the energy requirement for permeate extraction with the increase of membrane fouling.

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Section: Methodsmentioning

confidence: 99%

Section: The Pilot Plantmentioning

confidence: 99%

Integrated fixed-film activated sludge membrane bioreactors versus membrane bioreactors for nutrient removal: A comprehensive comparison

Mannina

Ekama

Capodici

et al. 2018

Journal of Environmental Management

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“…In this context, it has not been completely elucidated the effect that variable salinity conditions can exert on heterotrophic and autotrophic biomass respiratory activities and system performance within MBR and hybrid MBBR‐MBR systems for municipal wastewater treatment. In this regard, a respirometric method has been used to carry out the kinetic modeling for wastewater treatment systems and MBR and hybrid MBBR‐MBR technologies in particular because of its high reproducibility and accuracy …”

Section: Introductionmentioning

confidence: 99%

“…In this regard, a respirometric method has been used to carry out the kinetic modeling for wastewater treatment systems and MBR and hybrid MBBR-MBR technologies in particular because of its high reproducibility and accuracy. [23][24][25][26] Thus, the aim of this work was to evaluate the effects of the hydraulic retention time, the mixed liquor total suspended solids and the variable influent salinity on three biological systems working in parallel treating salinity-amended real wastewater, i.e. an MBR and two hybrid MBBR-MBR configurations, in terms of process performance and microbial kinetics with the peculiarity of carrying out the start-up of them at variable-salinity conditions without a previous acclimation.…”

Section: Introductionmentioning

confidence: 99%

Effect of variable salinity wastewater on performance and kinetics of membrane‐based bioreactors

Rodríguez-Sánchez

Leyva‐Díaz

Muñoz-Palazon

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND A membrane bioreactor and two hybrid moving bed biofilm reactor‐membrane bioreactor systems were operated in parallel for the treatment of variable‐salinity wastewater. Influent salinity was changed according to tidal‐like cycles: 6 h of maximum salinity (4.5 or 8.5 mS cm−1) followed by 6 h of regular wastewater salinity (around 1 mS cm−1). RESULTS For the two salinity scenarios, the bioprocesses operated under different conditions of mixed liquor total suspended solids (2500 and 3500 mg L−1), and hydraulic retention time (6, 9.5 and 12 h). The results showed that the bioprocesses had better performance under 4.5 mS cm−1 than under 8.5 mS cm−1 in terms of removal of biological oxygen demand at day 5 (BOD5) (+6.07%), ammonium cation (NH4+) (+41.29%) and total nitrogen (+37.64%), the heterotrophic and autotrophic yield coefficients (+0.02777 mgVSS mgCOD−1 and +0.13990 mgVSS mgN−1), and the autotrophic rate of substrate utilization (+3.39559 mgN L−1 h−1). CONCLUSIONS The results obtained would become of help for the modeling of membrane‐based systems treating variable saline wastewater. © 2019 Society of Chemical Industry

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“…M. Safwat, 2018). Several parameters affect the performance of these systems (Bhatia et al, 2017;Lopez-Lopez et al, 2012;Mannina et al, 2018;Ødegaard et al, 2000;Sriwiriyarat et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Upgrading Conventional Activated Sludge System Using Bio-media: A Case Study of Zenin Wastewater Treatment Plant, Egypt

Hanafy¹,

Safwat²,

Rozaik³

et al. 2019

CER

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This study investigated the ability to upgrade the biological treatment system in Zenin wastewater treatment plant, in Egypt. This investigation was conducted through the comparison of three different biological treatment systems: activated sludge process (AS), moving bed biofilm reactor (MBBR), and integrated fixed film activated sludge system (IFAS). Three pilot systems were established at Zenin wastewater treatment plant, to simulate AS, MBBR, and IFAS systems, to show the effect of various parameters on the removal efficiencies of biochemical oxygen demand (BOD5), total suspended solids (TSS), and ammonium-nitrogen (NH4-N). Different values of hydraulic retention time, different amounts of returned sludge, and concentration of dissolved oxygen, were examined. The maximum removal efficiencies of BOD5, TSS, and NH4-N were 50%, 81.9%, and 82% in activated sludge system, respectively; 80%, 81.8%, and 99.3% in MBBR system, respectively; and 62.3%, 86.2%, and 76% in IFAS system, respectively.

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Moving bed membrane bioreactors for carbon and nutrient removal: The effect of C/N variation

Cited by 48 publications

References 35 publications

Integrated fixed-film activated sludge membrane bioreactors versus membrane bioreactors for nutrient removal: A comprehensive comparison

Integrated fixed-film activated sludge membrane bioreactors versus membrane bioreactors for nutrient removal: A comprehensive comparison

Effect of variable salinity wastewater on performance and kinetics of membrane‐based bioreactors

Upgrading Conventional Activated Sludge System Using Bio-media: A Case Study of Zenin Wastewater Treatment Plant, Egypt

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