Towards integrated operation of membrane bioreactors: Effects of aeration on biological and filtration performance

Dalmau, Montserrat; Monclús, Héctor; Gabarrón, S.; Rodríguez-Roda, Ignasi; Comas, Joaquím

doi:10.1016/j.biortech.2014.08.031

Cited by 38 publications

(16 citation statements)

References 31 publications

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“…Unmodified sludge characteristics and filtration performance permits to conclude that no shear stress conditions which could provoke a fouling increment were present. Dalmau et al (2014) also estimated that an 80% of an integrated reduction on aeration (biologically and air-scouring) can be applied enable to decrease costs significantly without affecting negatively the filtration performance.…”

Section: Fouling Evolutionmentioning

confidence: 98%

Full-scale validation of an air scour control system for energy savings in membrane bioreactors

et al. 2015

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Section: Fouling Evolutionmentioning

confidence: 98%

Full-scale validation of an air scour control system for energy savings in membrane bioreactors

et al. 2015

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“…In this case, the operation should be implemented at high fluxes to control membrane fouling by physical cleaning and increasing the backwashing efficiency . There are studies conducted by researchers in other literature that propose effective strategies to reduce the aeration demand during filtration processes . Recently, Díaz et al obtained the optimal operating conditions by reducing the DO concentration to 0.38 mg/L at a high permeate flux of 42.2 L/m 2 · h to reduce the energy required in the process.…”

Section: Membrane Foulingmentioning

confidence: 99%

“…[142,143] There are studies conducted by researchers in other literature that propose effective strategies to reduce the aeration demand during filtration processes. [144,145] Recently, D ıaz et al [132] obtained the optimal operating conditions by reducing the DO concentration to 0.38 mg/L at a high permeate flux of 42.2 L/m 2 Á h to reduce the energy required in the process.…”

Section: Fsdmentioning

confidence: 99%

Current Status and Future Prospects of Membrane Bioreactors (MBRs) and Fouling Phenomena: A Systematic Review

et al. 2018

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Membrane bioreactors (MBRs) have been widely used for municipal and industrial wastewater treatment around the world due to their advantages, which include higher efficiency, smaller footprint, and lower sludge production over other conventional activated sludge (CAS) processes. However, membrane fouling that results from physicochemical interactions between the membrane and the components of the mixed liquor still remains the most challenging matter preventing the broad application of MBR technology. Recently, a considerable number of experimental and modelling investigations have been conducted concerning MBRs and membrane fouling. Despite the development of low‐fouling membrane systems, more research and engineering activities with a focus on surface modification, wastewater specifications, pre‐treatment and treatment conditions, and efficient fouling control and remedy strategies are still needed to minimize the probability of the occurrence of fouling. It is vital to investigate important aspects of the characterization and mechanisms of the fouling phenomenon to find reliable and long‐term solutions. This review provides a detailed survey of the main aspects of the MBR processes, configurations, advantages and disadvantages, fouling phenomenon, and fouling control strategies in MBRs. Past research and engineering activities in this area are critically reviewed such that pros and cons of recent developments in fouling inhibition and mitigation approaches are also discussed. The main practical and theoretical challenges for the effective utilization of MBRs in various municipal and industrial sectors are then addressed. At the end, we offer useful practical guidelines and recommendations for the better design and operation of MBRs in industrial and public communities.

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“…In an experimental study that evaluated the effect of aerobic and membrane aeration changes on sludge properties, biological nutrient removal and filtration processes in a pilot plant MBR, it was found that the optimal operating conditions were at an aerobic DO setpoint of 0.5 mg O2/L and a membrane specific aeration demand (SADm) of 1 m/h, where membrane aeration can be used for nitrification (Dalmau et al, 2014). Under these conditions, a total flow reduction of 42% was achieved (75% energy reduction) without compromising nutrient removal efficiencies, maintaining sludge characteristics and controlled filtration.…”

Section: Membrane Foulingmentioning

confidence: 99%

Membrane Processes

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Sadler

Greiner

et al. 2015

Water Environment Research

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This review, for literature published in 2014, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, fixed film and anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling. Other sub-sections of the Treatment Systems section that might relate to this literature review include: Biological Fixed-Film Systems, Activated Sludge and Other Aerobic Suspended Culture Processes, Anaerobic Processes, Water Reclamation and Reuse. The following sections might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants.

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Towards integrated operation of membrane bioreactors: Effects of aeration on biological and filtration performance

Cited by 38 publications

References 31 publications

Full-scale validation of an air scour control system for energy savings in membrane bioreactors

Full-scale validation of an air scour control system for energy savings in membrane bioreactors

Current Status and Future Prospects of Membrane Bioreactors (MBRs) and Fouling Phenomena: A Systematic Review

Membrane Processes

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