Two moving bed biofilm reactors in series for carbon, nitrogen, and phosphorous removal from high organic wastewaters

Tsitouras, Alexandra; Al-Ghussain, Nour; Delatolla, Robert

doi:10.1016/j.jwpe.2021.102088

Cited by 17 publications

(3 citation statements)

References 53 publications

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“…In a study ofBernat et al., the effectiveness of a sequencing batch biofilm reactor fed with 1900±20 mg COD/L of synthetic municipal wastewater diluted leachate, as COD removal efficiency was 86.5 (±4)-87.0±4 %[49]. Also, in another study conducted by Tsitouras et al, the highest sCOD removal efficiency was reported to be 97.5±5 % at sCOD concentration of 2500±30 mg/L using a sequencing batch moving bed biofilm reactor (SB-MBBR) treating cheese production simulated wastewater[50]. TCOD eff concentrations against stage number at various TCOD in and HRTs of (a) 16 h; (b) 12 h and (c) 8 h from MS-FFBR.…”

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confidence: 92%

Treatment capacity of a novel flexible fibre biofilm bioreactor treating high-strength milk processing wastewater

Abdulgader

Qian

Zinatizadeh

et al. 2021

Environmental Technology

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This study was focused on the capacity investigation of a novel multistage flexible fiber biofilm reactor (MS-FFBR) to treat milk processing wastewater (MPW) with high organic loading (OLR). The MS-FFBR performance was evaluated at four intermediate stages separately and also the final effluent quality of the overall system with an influent chemical oxygen demand (COD in ) ranged from 1500±20 to 6000±50 mg/L and hydraulic retention times (HRTs) of 8, 12, 16 h. By comparting the bioreactors into the four stages effectively enhanced the bioreactor's performance. The maximum TCOD removal efficiency was achieved at the first stage, which was about 89±20, 82±20 and 78±20 % at HRTs of 16, 12, 8 h, and low COD in of 1600±20, 1590±20, and 1673±20 mg/L, respectively. However, the first stage had less contribution to TCOD removal at high COD in concentrations, reported to be about 42±4 %, 46±4 %, and 25±4 % at COD in of 5960±40, 5830±40, and 5870±40 mg/L, respectively. Furthermore, the MS-FFBR was effective in removing total suspended solids (TSS) and turbidity. The bioreactor has reduced the effluent turbidity to 9.0±0.2, 20.0±0.6 and 16.1±0.5 NTU at low COD in concentrations of 1600±20, 1590±20, and 1670±20 mg/L and HRTs of 16, 12 and 8 h, respectively. The bioreactor revealed a high COD removal rate increased from 2.3±0.1 to 12.2±0.4 kg TCOD/m 3 d by increasing the OLR from 2.4±0.1 to 17.6±0.4 kg TCOD/m 3 d, confirming high reactor capacity for treatment of high strength wastewater. Kinetic studies confirmed that the biomass yield was low at various HRTs ranging 0.1-0.2 gVSS/gCOD.

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confidence: 92%

Treatment capacity of a novel flexible fibre biofilm bioreactor treating high-strength milk processing wastewater

Abdulgader

Qian

Zinatizadeh

et al. 2021

Environmental Technology

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“…Carta-Escobar et al [32] obtained COD removal efficiencies between 72.1 and 81.0% and between 44.4 and 66.2% for organic load rates of 0.237 and 0.700 kg m −3 d −1 , respectively. Since 1992, the MBBR has been studied for dairy wastewater treatment with results varying from 60 to 95% COD removal efficiency, mainly depending on OLR and HRT [33][34][35]. Total nitrogen removal has been overlooked for this type of system when working with dairy wastewater.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Biosolids Production and System Efficiency between Activated Sludge, Moving Bed Biofilm Reactor, and Sequencing Batch Moving Bed Biofilm Reactor in the Dairy Wastewater Treatment

et al. 2022

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Dairy industry wastewater is rich in organic content, presenting a high biodegradability, and therefore biological treatments are widely employed. This study aimed to evaluate biosolids production in three systems: activated sludge (AS), movingbed biofilm reactor (MBBR), and sequencingbatch movingbed biofilm reactor (SBMBBR). Simulated dairy wastewater was used at different organic load rates (OLRs): 1.22, 2.87, and 5.44 gCOD L−1d−1. Besides biosolids production, COD, total carbon (TC), and total nitrogen (TN) removal efficiency was evaluated. Biosolids production was measured in the mixed liquor, carrier-adhered biomass, treated wastewater, and surplus sludge. The operational conditions were kept similar for the three systems, with a carrier filling ratio of 50% for MBBR and SBMBBR. The SBMBBR proved to have better performance in the removal efficiencies of COD, TC, and TN for all OLRs studied. The MBBR presented a similar COD and TC removal efficiency as the SBBR for the two highest OLRs (2.87 and 5.44 gCOD L−1d−1). Concerning biosolids production, the MBBR system produced less biomass and delivered the lowest amount of adhered biomass inside the carriers. The AS treatment generated the highest amount of sludge and offered the worst treatment capability for all OLRs evaluated.

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“…By adding free-floating biofilm carriers into the aeration tank, the MBBR system has many advantages such as low space requirement, simple construction, low sludge generation enhancing oxygen transfer, and a large surface area for colonization and high specific biomass activity [18][19][20][21]. In the MBBR system, the biofilm carriers play an important role in determining the overall efficiency and performance of treating wastewater [19,22]. Biofilm carriers for MBBR can be classified by non-porous or porous carriers such as activated carbon particles [23], fireclay [24], natural materials [25], and materials supported on polymers including polyethylene cylinder [26], polypropylene [27], poly(vinyl chloride) [28], polyurethane foam [29], poly(vinyl alcohol) gel [30].…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Novel carrier for seafood wastewater treatment using moving bed biofilm reactor system

Phan

Pham

Duong

et al. 2022

Environmental Engineering Research

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In this work, seafood wastewater was treated by using MBBR reactor over a novel carrier (PUF-PVA gel) derived from the combination of a porous (PUF) and hydrophilic surface (PVA gel). A freezing-thawing method was used for the preparation of the novel PUF-PVA gel which is reported for the first time. Experimental results indicated that PUF-PVA gel carrier which possesses an excellent textural structure (specific surface area of 3.4 m2/g, pore size in the range of 10 -40 μm and hydrophilic surface) accounts for faster water immersion and better microbial adhesion, resulting in the biofilm content attached at the start-up stage 2.4 times higher relative to conventional PUF carrier alone. The MBBR system can be operated stably at a hydraulic retention time (HRT) of 7 hours in which the organic loading rate ranged from 2.5 kg COD/m3.day to 5.1 kg COD/m3.day. When operated at the organic loading rate of 2.5 kg COD/m3.day, the maximum COD and the nitrogen removal efficiency of MBBR based on the PUF-PVA gel carrier were 92 ± 0.6% and 89 ± 3.4%, respectively, which is higher than that of the PUF carrier.

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Two moving bed biofilm reactors in series for carbon, nitrogen, and phosphorous removal from high organic wastewaters

Cited by 17 publications

References 53 publications

Treatment capacity of a novel flexible fibre biofilm bioreactor treating high-strength milk processing wastewater

Treatment capacity of a novel flexible fibre biofilm bioreactor treating high-strength milk processing wastewater

A Comparison of Biosolids Production and System Efficiency between Activated Sludge, Moving Bed Biofilm Reactor, and Sequencing Batch Moving Bed Biofilm Reactor in the Dairy Wastewater Treatment

Novel carrier for seafood wastewater treatment using moving bed biofilm reactor system

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