Ultrafiltration membrane fouling by extracellular organic matters (EOM) of Microcystis aeruginosa in stationary phase: Influences of interfacial characteristics of foulants and fouling mechanisms

Qu, Fangshu; Liang, Heng; Wang, Zhaozhi; Wang, Hui; Yu, Hui; Li, Guibai

doi:10.1016/j.watres.2011.11.051

Cited by 272 publications

(110 citation statements)

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“…Membrane fouling results in higher operation and maintenance costs, due to consumption of permeate during backwashing (Serra et al, 1999), increased energy consumption by permeate pumps to overcome increased resistance, and chemical cleaning processes which shorten membrane lifetime (Qu et al, 2012, Gahleitner et al, 2014. Usually, backwashing is applied every 30-90 minutes (Sutzkover-Gutman et al, 2010).…”

Section: List Of Tablesmentioning

confidence: 99%

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Ultrafiltration Fouling: Impact of Backwash Frequency and Air Sparging

Wray

Bérubé

2014

Separation Science and Technology

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A bench-scale study was performed to optimize backwash frequency and air sparging conditions during ultrafiltration (UF) of natural surface waters in order to maximize water production and minimize irreversible fouling as well as operating and maintenance costs. Surface shear stress representing different air sparging conditions (continuous coarse bubble, discontinuous coarse bubble, and large pulse bubble sparging) was applied in combination with various backwash frequencies (0.5, 2 and 6 h) and fouling was assessed. Results indicated that air sparging with discontinuous coarse bubbles or large pulse bubbles significantly reduced the irreversible fouling rate while providing cost savings when compared to the baseline condition, which assumed a 0.5 h-backwash frequency and no air sparging during filtration. Cost savings were more pronounced at lower backwash frequencies, due to value associated with extra water produced over longer filtration times and longer membrane life resulted from fewer recovery chemical cleans because of lower irreversible fouling.

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Section: List Of Tablesmentioning

confidence: 99%

“…Fouling can also lead to high energy consumption, as it increases pumping power and number of cleaning processes (Qu et al, 2012).…”

Section: Ultrafiltration Membrane Foulingmentioning

confidence: 99%

Ultrafiltration Fouling: Impact of Backwash Frequency and Air Sparging

Wray

Bérubé

2014

Separation Science and Technology

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“…Some researches had demonstrated the influence of different hydrophobic/hydrophilic fractions of EOM on ultrafiltration membrane fouling [12][13][14]. In the membrane fouling process, the deposited layer formation, pore plugging and hydrophobic adhesion were the main mechanisms for the membrane fouling caused by algal EOM [15]. In order to solve these problems, amounts of studies conducted on the removal of algae have been mainly concentrated on effects of organic matter of algae (AOM) and the disinfection by-products (DBPs) [16,17].…”

Section: Introductionmentioning

confidence: 99%

Influence of coagulation process on the ultrafiltration performance – The roles of Al species and characteristics of algae-laden water

Zhang

Wang

et al. 2017

Separation and Purification Technology

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a b s t r a c tThe aim of this study was to investigate the coagulation performances in different algal systems, and effects of algal morphology and composition of extracellular organic matter (EOM) on membrane flux were also investigated. The results indicated that Al 13 generated the largest flocs, and strength factor and recovery factor were also largest. The results of ultrafiltration experiments also showed that the floc size and the concentration of Soluble Microbial Products (SMP) may be the main decision factors in the membrane fouling process. Al species distribution was important in removing EOM in the coagulation process. SMP in EOM could be effectively removed by Al 13 and Al 30 , so the membrane fouling could be alleviated due to the larger removal efficiency of SMP. The roughness of the sediment layer formed by Al 13 was largest, and the sediment layer would adsorb and intercept more algae organic matter.

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“…Membrane fouling has been studied extensively by the scientific community and it is still been studied [18,19] because fouling mechanisms are not completely understood.…”

Section: Introductionmentioning

confidence: 99%

“…Proteins and carbohydrates are commonly used in model wastewaters to simulate STE since these are the main components of the extracellular polymeric substances (EPS), which are known to be the primarily responsible for membrane fouling in biological effluents [8,18,19]. Thus, other authors have studied them as model foulants previously obtaining good results.…”

Section: Introductionmentioning

confidence: 99%

Comparison of different model solutions to simulate membrane fouling in the ultrafiltration of a secondary effluent from a municipal wastewater treatment plant

Torà-Grau

Soler–Cabezas

Vincent‐Vela

et al. 2015

Desalination and Water Treatment

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The quality of the secondary treatment effluent from a Municipal Wastewater Treatment Plant is not good enough for some applications such as agriculture. Membrane ultrafiltration has been proven to be a reliable tertiary treatment to achieve the needed water quality. The productivity of the ultrafiltration processes depends on the membrane fouling. The aim of this work is to prepare a model wastewater that could mimic the fouling trend of a secondary treatment effluent wastewater from a Municipal Wastewater Treatment Plant. Several model wastewaters consisting of different proteins and carbohydrates were used in the ultrafiltration experiments. Ultrafiltration was also performed with a secondary treatment effluent. The membrane used in the ultrafiltration tests was a UFCM5 from Norit X-flow® hydrophilic polyethersulfone/polyvinylpyrrolidone blend hollow fiber ultrafiltration membrane of 200 KDa molecular weight cut-off with a fiber diameter of 1.5 mm. Membrane configuration was insideout. Ultrafiltration tests with model wastewater and secondary treatment effluent wastewater were compared. The results showed that the best model wastewater which represents the fouling trend of secondary treatment effluent wastewater is the model wastewater whose composition is 15 mg/l of bovine serum albumin and 5.5 mg/l of dextran.

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Ultrafiltration membrane fouling by extracellular organic matters (EOM) of Microcystis aeruginosa in stationary phase: Influences of interfacial characteristics of foulants and fouling mechanisms

Cited by 272 publications

References 50 publications

Ultrafiltration Fouling: Impact of Backwash Frequency and Air Sparging

Ultrafiltration Fouling: Impact of Backwash Frequency and Air Sparging

Influence of coagulation process on the ultrafiltration performance – The roles of Al species and characteristics of algae-laden water

Comparison of different model solutions to simulate membrane fouling in the ultrafiltration of a secondary effluent from a municipal wastewater treatment plant

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