Influence of diatomite addition on membrane fouling and performance in a submerged membrane bioreactor

Yang, Xiao-Li; Song, Hai-Liang; Lu, Jilai; Fu, Dafang; Cheng, Bing

doi:10.1016/j.biortech.2010.07.037

Cited by 35 publications

(20 citation statements)

References 36 publications

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“…It is a result of multiple factors and the degree of fouling depends on the membrane porosity, surface structure, and the physical and chemical properties of the membrane material [1][2][3][4]. Blending modification can improve the characteristics of the membrane material with complementarity and synergy effects of the polymer components.…”

Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Impact of Cellulose Nanofibers upon the Anti-Fouling Performance of Dialysis Composite Membrane

Ли

Gao

Bai

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

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Composite membranes for dialysis were prepared by a Loeb-Sourirajan (L-S) phase inversion process. Bovine serum albumin was chose to replace the human serum albumin for researching. Then the flux attenuation coefficient and the protein absorption of the dialysis membrane was calculated and tested in order to reflect the effect of cellulose nanofibers on the antifouling performance of membrane. Finally, four methods of membrane cleaning were compared and an integrated approach was suggested.

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Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Impact of Cellulose Nanofibers upon the Anti-Fouling Performance of Dialysis Composite Membrane

Ли

Gao

Bai

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

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“…The MLVSS/MLSS ratio ( f ) and the specific oxygen uptake rate (SOUR) were selected as the indicators of the sludge activity in MBR (Yang et al 2010). Variations of R cb , food to microorganism ratio (F/M), organic removal loading rate (ORLR), and EC were analyzed to investigate the influence of the NF concentrate on the MBR sludge activity during different operational periods.…”

Section: Sour and Mlvss/mlss Ratiomentioning

confidence: 99%

Effects of returning NF concentrate on the MBR-NF process treating antibiotic production wastewater

Cheng

Jianxing

et al. 2016

Environ Sci Pollut Res

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The optimization of the nanofiltration (NF) concentrate backflow ratio (R cb ) and the influence of the NF concentrate on the performance of membrane bioreactornanofiltration (MBR-NF) process treating antibiotic production wastewater were investigated on a laboratory scale. The R cb was optimized at 60 % based on the removal rates of chemical oxygen demand (COD) and NH 4 + -N by MBR. Data analyses indicated that salinity brought by NF concentrate is the major driver leading to the decrease of sludge activity, especially at a high R cb . EPS analysis showed that electric conductivity (EC), proteins in soluble microbial products (SMP), and SMP brought by NF concentrate are the dominant factors causing the severe membrane fouling in MBR. Furthermore, undegradable substances including fulvic acid-like and humic acid-like compounds accumulated in NF concentrate showed significant influence on fouling of NF. MBR could well degrade small MW compounds in NF concentrate, which confirmed the enhancement of organic removal efficiency by recycling the NF concentrate to MBR. The MBR-NF process showed a relatively stable performance at the R cb of 60 % (volume reduction factor (VRF) = 5), and the NF permeate could satisfy the water quality standard for fermentation process with a water recovery rate of 90.9 %.

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“…Addition of diatomite (50 mg/L) into the MBRs could improve membrane performance (fouling rate decreased from 0.47 to 0.11 kPa/day) by reducing the fine colloids and DOM in the reactors. Wu et al compared the effect of powdered activated carbon, zeolite, and coagulants (polyamide, polyaluminum chloride) on membrane filtration treating anaerobic effluent and determined polyaluminum chloride (10 mg/L) as the most effective additive in reducing fouling [118,119]. Johir et al found that granule activated carbon could efficiently remove a range of organic matters including amino acids, biopolymers, humic acid-like substances, and fulvic acid-like substances from the MBR supernatant by adsorption mechanisms, therefore reducing the total membrane resistance from 51 × 10 11 to 20 × 10 11 m −1 [120].…”

Section: Effective Strategies Controlling Microbial Relevant Foulimentioning

confidence: 99%

Microbial Relevant Fouling in Membrane Bioreactors: Influencing Factors, Characterization, and Fouling Control

Fane

2012

Membranes

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Microorganisms in membrane bioreactors (MBRs) play important roles on degradation of organic/inorganic substances in wastewaters, while microbial deposition/growth and microbial product accumulation on membranes potentially induce membrane fouling. Generally, there is a need to characterize membrane foulants and to determine their relations to the evolution of membrane fouling in order to identify a suitable fouling control approach in MBRs. This review summarized the factors in MBRs that influence microbial behaviors (community compositions, physical properties, and microbial products). The state-of-the-art techniques to characterize biofoulants in MBRs were reported. The strategies for controlling microbial relevant fouling were discussed and the future studies on membrane fouling mechanisms in MBRs were proposed.

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Influence of diatomite addition on membrane fouling and performance in a submerged membrane bioreactor

Cited by 35 publications

References 36 publications

Notice of Retraction: Impact of Cellulose Nanofibers upon the Anti-Fouling Performance of Dialysis Composite Membrane

Notice of Retraction: Impact of Cellulose Nanofibers upon the Anti-Fouling Performance of Dialysis Composite Membrane

Effects of returning NF concentrate on the MBR-NF process treating antibiotic production wastewater

Microbial Relevant Fouling in Membrane Bioreactors: Influencing Factors, Characterization, and Fouling Control

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