Effect of membrane fouling reducer on cake structure and membrane permeability in membrane bioreactor

Hwang, Byung Kook; Lee, Woo Nyoung; Park, Pyung Kyu; Lee, Chung Hak; Chang, Ih-Seop

doi:10.1016/j.memsci.2006.11.032

Cited by 113 publications

(51 citation statements)

References 23 publications

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“…Without the large particles, the pore clogging by the small particles will increase, leading to an increase in fouling rate. Similar results were reported in the literature [36][37][38]. …”

Section: Effect Of Mbs On Fouling Rate Without Coagulationsupporting

confidence: 92%

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Gwenaelle

Jung²,

Choi

et al. 2017

Desalination

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“…Without the large particles, the pore clogging by the small particles will increase, leading to an increase in fouling rate. Similar results were reported in the literature [36][37][38]. …”

Section: Effect Of Mbs On Fouling Rate Without Coagulationsupporting

confidence: 92%

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Gwenaelle

Jung²,

Choi

et al. 2017

Desalination

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“…Additionally, Gemfloc Ò addition effectively alleviated membrane fouling due to the prevention of cake layer formation and pore blocking. Results reported by Hwang et al [34] and Jamal Khan et al [35] with addition of cationic polymer (MPE or MPE50) into MBR systems were consistent with the findings of this study. The reduction of R C made a greater contribution to R T decrease due to addition of cationic polymer.…”

supporting

confidence: 93%

Membrane fouling reduction and improvement of sludge characteristics by bioflocculant addition in submerged membrane bioreactor

Deng

Guo

Ngo

et al. 2015

Separation and Purification Technology

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a b s t r a c tThe effectiveness of a green bioflocculant (Gemfloc Ò ) on enhanced performance of a submerged membrane bioreactor (SMBR) was evaluated in terms of membrane fouling reduction and sludge characterization. Two MBRs were operated parallelly in this study, namely conventional MBR (CMBR) and MBR with Gemfloc Ò addition (MBR-G). Results showed mitigated membrane fouling through Gemfloc Ò addition in terms of cake layer formation and pore blocking. When compared to the CMBR, in spite of more extracellular polymeric substances (EPS) presented in activated sludge, the MBR-G demonstrated less soluble microbial products (SMP), larger sludge flocs, higher zeta potential and greater relative hydrophobicity of sludge flocs, which decreased cake layer resistance and pore blocking resistance. The reduced cake layer resistance in the MBR-G could be also ascribed to less growth of suspended biomass, lower sludge viscosity, as well as less EPS, SMP and biopolymer clusters in the cake layer. In addition, a modified resistance-in-series model was employed by considering SMP and mixed liquor suspended solids. The simulated results implied that the model could predict the influence of sludge characteristics on membrane fouling behavior of the SMBR.

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“…Stage-3 is characterized by an abrupt rise of TMP over a short period because of the rapid increase of local flux exceeding the CF since a significant part of membrane surface is already occupied by foulants (Cho & Fane, 2002). More specific phenomena, such as sudden change of the biofim or cake layer structure (Zhang et al, 2006) and sudden increase of the EPS content at the bottom of the cake layer (Hwang et al, 2007), were proposed to explain stage-3. The aim of fouling control is practically to prolong stage-2 as long as possible to sustain the filtration.…”

Section: Fouling Stagesmentioning

confidence: 99%

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

Bilad

2017

IJOST

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Membrane bioreactors (MBRs) have recently become widely accepted as an advanced technology for treatment of domestic and industrial wastewaters. The objective of this review is to provide overview on MBR technology for wastewater treatment application. It includes discussions on the fundamental, core problems (membrane fouling), recent effective development approach (dynamic filtration systems) and future research direction of MBRs. Since MBRs integrate a conventional activated sludge process with membrane filtration, and both fundamental aspects are discussed first. Later, a comprehensive discussion about membrane fouling, the main problems in MBR, is provided, including fouling control strategies. The discussion on the MBR membranes and relation between membrane properties and MBR performance is also provided. This review also includes one of the most promising MBR technologies that specifically design to manage membrane fouling: dynamic filtration systems. Lastly, insight into an approach to address MBRs challenges and recent research and developments are provided.

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Effect of membrane fouling reducer on cake structure and membrane permeability in membrane bioreactor

Cited by 113 publications

References 23 publications

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Effect of microbubbles on microfiltration pretreatment for seawater reverse osmosis membrane

Membrane fouling reduction and improvement of sludge characteristics by bioflocculant addition in submerged membrane bioreactor

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

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