Effects of aeration on suction pressure in a submerged membrane bioreactor

Ueda, Tatsuki; Hata, Kenji; Kikuoka, Yasuto; Seino, Osamu

doi:10.1016/s0043-1354(96)00292-8

Cited by 244 publications

(106 citation statements)

References 4 publications

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“…The simulation results are consistent with other research: Figure 6 shows that an elevated filtration flux, a high TSS concentration and low aeration intensity increase the TMP significantly ( figures 6A, 6C, 6D). This behavior is consistent with the results of Germain et al and Ueda et al (Germain, 2005;Ueda, 1997), who demonstrated that an increase in the permeate flux and a reduction in the aeration rate would cause severe membrane fouling. Also, the filtration of a sticky sludge or a biomass with a high specific filtration resistance increases the fouling process (figures 6B, 6F).…”

Section: 2-influence Of the Smbr Process Variables On Tmp Evolutionsupporting

confidence: 92%

Dynamical Modelling and Simulation of Wastewater Filtration Process by Submerged Membrane Bioreactors

Zarragoitia-González¹,

Haza²,

Schetrite³

et al. 2009

International Journal of Chemical Reactor Engineering

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Section: 2-influence Of the Smbr Process Variables On Tmp Evolutionsupporting

confidence: 92%

Dynamical Modelling and Simulation of Wastewater Filtration Process by Submerged Membrane Bioreactors

Zarragoitia-González¹,

Haza²,

Schetrite³

et al. 2009

International Journal of Chemical Reactor Engineering

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“…6 depicts changes in suction pressure with aeration rates. As the aeraton rate increased, the suction pressure was found to decrease gradually from 41 (without aeration) to 31 cmHg (with 0.4 m 3 /min), which is consistent with the result from Ueda (1997). One would expect that no aeration would worsen membrane fouling.…”

Section: Effect Of Aeration Rates On Effluent Mlss Levelsupporting

confidence: 85%

Optimum Operation of a PVDF-type Hollow Fiber Membrane Bioreactor for Continuous Sewage Treatment

Shin¹

2010

Journal of Environmental Science International

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A membrane bioreactor (MBR) was designed using polyvinylidene fluoride(PVDF)-type hollow fiber membrane modules with a treatment capacity of 10 ton/day. A pilot plant was installed in a sewage treatment plant and was operated with an intermittent aeration method which avoids any concentration gradient of suspended solids (SS) in the MBR. For continuous operation, the pilot plant was first tested with influent (mixed liquor suspended solid:MLSS of 1000-2000 mg/L) of aeration tanks in the sewage treatment plant. The MBR was pre-treated with washing water, 10% ethanol solution, 5% NaOCl solution and finally washing water, one after another. To demonstrate the effect of the MBR on sewage treatment, compared with conventional activated sludge processes, we investigated the relationships among permeate amount (LMH), change in operation conditions, influent MLSS level and sludge production. It was found that the optimum aeration rate and suction pressure were 0.3 m 3 /min and 30~31 cmHg, respectively. Under stable conditions in aeration, suction pressure, influent flow rate and drainage, the SS removal efficiency was more than 99.99% even when the MLSS loading rate changes. Compared with conventional activated sludge processes, the MBR was more effective in cost reduction by 27% based on permeate amount and by 51.5% on sludge production.

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“…This disparate behavior stems from the slugging phenomenon, whereby large changes in the gas flow have a negligible effect on the velocity of the film that is formed adjacent to the surface of the fiber [211]. Similar plateaus have been observed in submerged HF systems for sewage treatment and drinking-water treatment [191,210]. It has been observed that at high gas flowrates (namely, 40 L/h), a maximum flux was observed, after which the flux started to decline [212].…”

Section: Effect Of Gas Flowratementioning

confidence: 67%

“…It has been reported in many studies that the filtration performance can be improved by controlling the bubbling rate [15,16,209,210]. On the one hand, the critical flux improves in an approximately linear fashion with respect to gas flow in submerged HF systems [100][101][102][103]204].…”

Section: Effect Of Gas Flowratementioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

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Abstract:The submerged membrane filtration concept is well-established for low-pressure microfiltration (MF) and ultrafiltration (UF) applications in the water industry, and has become a mainstream technology for surface-water treatment, pretreatment prior to reverse osmosis (RO), and membrane bioreactors (MBRs). Compared to submerged flat sheet (FS) membranes, submerged hollow fiber (HF) membranes are more common due to their advantages of higher packing density, the ability to induce movement by mechanisms such as bubbling, and the feasibility of backwashing. In view of the importance of submerged HF processes, this review aims to provide a comprehensive landscape of the current state-of-the-art systems, to serve as a guide for further improvements in submerged HF membranes and their applications. The topics covered include recent developments in submerged hollow fiber membrane systems, the challenges and developments in fouling-control methods, and treatment protocols for membrane permeability recovery. The highlighted research opportunities include optimizing the various means to manipulate the hydrodynamics for fouling mitigation, developing online monitoring devices, and extending the submerged HF concept beyond filtration.

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Effects of aeration on suction pressure in a submerged membrane bioreactor

Cited by 244 publications

References 4 publications

Dynamical Modelling and Simulation of Wastewater Filtration Process by Submerged Membrane Bioreactors

Dynamical Modelling and Simulation of Wastewater Filtration Process by Submerged Membrane Bioreactors

Optimum Operation of a PVDF-type Hollow Fiber Membrane Bioreactor for Continuous Sewage Treatment

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

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