Comparison between moving bed-membrane bioreactor (MB-MBR) and membrane bioreactor (MBR) systems: Influence of wastewater salinity variation

Trapani, Daniele Di; Bella, Gaetano Di; Mannina, Giorgio; Torregrossa, Michele; Viviani, Gaspare

doi:10.1016/j.biortech.2014.03.126

Cited by 109 publications

(98 citation statements)

References 34 publications

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“…5c2). Moreover, the biofilm detachment, rich in polymeric substances, could negatively affect the permeability of the cake layer, likely formed on the membrane surface, in agreement with previous findings (Di Trapani et al, 2014). The progressive worsening of the filtration properties was also confirmed by the fouling rate (FR) values (Fig.…”

Section: Sludge Dewaterabilitysupporting

confidence: 91%

“…Referring to the COD removal, both the biological removal and the total removal (after membrane filtration) were assessed according to Mannina et al (2016a). Periodic tests on carrier samples were carried out, in order to evaluate the biofilm growth, in according to previously reported methods (Di Trapani et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…The fouling tendency of the membrane module was assessed by monitoring the total resistance (R T ) to membrane filtration, and the specific fouling mechanisms have been assessed by applying the resistance-in-series (RIS) model (Di Trapani et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the occurrence of the storage phenomenon was observed in both suspended biomass and biofilm, related to the ability of specific microorganisms to rapidly convert the external organic substrate into internal storage products under dynamic conditions (Majone et al, 1999;Di Trapani et al, 2014). Fig.…”

Section: Biomass Respiratory Activity and Biokinetic/stoichiometric Pmentioning

confidence: 99%

“…One of the major drawbacks in MBRs is still represented by fouling phenomena that may severely affect the filtration properties of the membrane modules (Judd and Judd, 2010). Particularly, the mixed liquor suspended solid (MLSS) concentration has been recognized to play a significant effect on membrane fouling (Poyatos et al, 2008;Di Trapani et al, 2014). An alternative to managing this problem is to couple a MBR system with a moving bed biofilm reactor (MBBR) in an IFAS mode (Integrated Fixed Film Activated Sludge).…”

Section: Introductionmentioning

confidence: 99%

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Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

Mannina

Capodici

Cosenza

et al. 2017

Journal of Environmental Management

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a b s t r a c tThe paper reports the results of an experimental campaign carried out on a University of Cape Town (UCT) integrated fixed-film activated sludge (IFAS) membrane bioreactor (MBR) pilot plant. The pilot plant was analysed in terms of chemical oxygen demand (COD) and nutrients removal, kinetic/stoichiometric parameters, membrane fouling and sludge dewaterability. Moreover, the cultivable bacterial community structure was also analysed.The pilot plant showed excellent COD removal efficiency throughout experiments, with average value higher than 98%, despite the slight variations of the influent wastewater. The achieved nitrification efficiency was close to 98% for most of the experiments, suggesting that the biofilm in the aerobic compartment might have sustained the complete nitrification of the influent ammonia, even for concentrations higher than 100 mg L À1 . The irreversible resistance due to superficial cake deposition was the mechanism that mostly affected the membrane fouling. Moreover, it was noticed an increase of the resistance due pore blocking likely due to the increase of the EPS Bound fraction that could derive by biofilm detachment.The bacterial strains isolated from aerobic tank are wastewater bacteria known for exhibiting efficient heterotrophic nitrificationeaerobic denitrification and producing biofilm.

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Section: Sludge Dewaterabilitysupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Biomass Respiratory Activity and Biokinetic/stoichiometric Pmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

Mannina

Capodici

Cosenza

et al. 2017

Journal of Environmental Management

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Performance and kinetics of membrane and hybrid moving bed biofilm‐membrane bioreactors treating salinity wastewater

et al. 2017

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A pilot‐plant membrane bioreactor (MBR) and two pilot‐plant hybrid moving bed biofilm reactor–membrane bioreactors (MBBR–MBRs), divided into three aerobic and one anoxic chambers, were started up for the treatment of salinity‐amended urban wastewater. The MBBR–MBR systems worked with and without carriers in the anoxic zone (MBBR–MBRanox and MBBR–MBRn/anox, respectively). The systems were operated from start‐up to stabilization, showing high removal of organic matter—a maximum of 90% chemical oxygen demand and 98% biochemical oxygen demand on the fifth day for MBBR–MBRn/anox in the stabilization phase—but low nitrogen elimination—30% maximum for MBBR–MBRn/anox in the stabilization phase. Biofilm attached to carriers reached less than 50 mg L−1 in the hybrid system. MBR showed faster kinetics than the two MBBR–MBR systems during start‐up, but the opposite occurred during stabilization. Maximum specific growth rates for heterotrophic and autotrophic biomass were 0.0500 and 0.0059 h−1 for MBBR–MBRn/anox in the stabilization phase. © 2017 American Institute of Chemical Engineers AIChE J, 63: 3329–3342, 2017

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Respirometric method for kinetic modeling of ammonium‐oxidizing and nitrite‐oxidizing bacteria in a membrane bioreactor

et al. 2020

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A respirometric method for the kinetic modeling of ammonium‐oxidizing bacteria (AOB) and nitrite‐oxidizing bacteria (NOB) was implemented in two membrane bioreactor (MBRA and MBRB) systems. These biological systems worked at mixed liquor suspended solids concentration of about 6.6 g L−1. MBRA worked at 6 hr of hydraulic retention time (HRT) and 20.7°C, while the operational conditions for MBRB were 9.5 hr of HRT and 14.7°C. Experimental data were fitted to the kinetic model with R2 values of .9320 and .9250 for MBRA and MBRB, respectively. Both systems showed similar performances regarding organic matter and nitrogen removal. However, MBRB showed highest rates of carbon source degradation and net heterotrophic bacteria growth, and MBRA had highest rates of nitrogen source degradation and net autotrophic bacteria growth. This last system was characterized by values for YAOB, YNOB, μm,AOB and μm,NOB of 1.1749 mgVSS mgN−1, 0.6473 mgVSS mgN−1, 0.3664 hr−1 and 0.1823 hr−1, respectively.

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Comparison between moving bed-membrane bioreactor (MB-MBR) and membrane bioreactor (MBR) systems: Influence of wastewater salinity variation

Cited by 109 publications

References 34 publications

Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

Performance and kinetics of membrane and hybrid moving bed biofilm‐membrane bioreactors treating salinity wastewater

Respirometric method for kinetic modeling of ammonium‐oxidizing and nitrite‐oxidizing bacteria in a membrane bioreactor

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