Membrane fouling and performance of anaerobic ceramic membrane bioreactor treating phenol- and quinoline-containing wastewater: granular activated carbon vs polyaluminum chloride

Granular activated carbon was acclimated to different substrates, and then used in an anaerobic fluidized bed membrane bioreactor (AFMBR) to treat diluted domestic wastewater. Acetate acclimation produced the best results.

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Tailored Granular Activated Carbon Treatment of Perchlorate in Drinking Water. ESTCP Cost and Performance Report

10.21236/ada554485 ◽

2011 ◽

Author(s):

Trent Henderson ◽

Fred Cannon

Keyword(s):

Drinking Water ◽

Activated Carbon ◽

Granular Activated Carbon ◽

Performance Report ◽

And Performance ◽

Carbon Treatment

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Comparative study on membrane fouling between membrane-coupled moving bed biofilm reactor and conventional membrane bioreactor for municipal wastewater treatment

Water Science & Technology ◽

10.2166/wst.2013.823 ◽

2013 ◽

Vol 69 (5) ◽

pp. 1021-1027 ◽

Cited By ~ 24

Author(s):

W. Yang ◽

W. Syed ◽

H. Zhou

Keyword(s):

Membrane Fouling ◽

Membrane Filtration ◽

Membrane Bioreactor ◽

Municipal Wastewater ◽

Biofilm Reactor ◽

Municipal Wastewater Treatment ◽

Moving Bed Biofilm Reactor ◽

Reactor Unit ◽

Polyaluminum Chloride ◽

Moving Bed

This study compared the performance between membrane-coupled moving bed biofilm reactor (M-MBBR) and a conventional membrane bioreactor (MBR) in parallel. Extensive tests were conducted in three pilot-scale experimental units over 6 months. Emphasis was placed on the factors that would affect the performance of membrane filtration. The results showed that the concentrations of soluble microbial product (SMP), colloidal total organic carbon and transparent exopolymer particles in the M-MBBR systems were not significantly different from those in the control MBR system. However, the fouling rates were much higher in the M-MBBR systems as compared to the conventional MBR systems. This indicates membrane fouling potential was related not only to the concentration of SMP, but also to their sources and characteristics. The addition of polyaluminum chloride could reduce the fouling rate of the moving bed biofilm reactor unit by 56.4–84.5% at various membrane fluxes.

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Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor

Processes ◽

10.3390/pr8050545 ◽

2020 ◽

Vol 8 (5) ◽

pp. 545 ◽

Cited By ~ 1

Author(s):

Rathmalgodage Thejani Nilusha ◽

Tuo Wang ◽

Hongyan Wang ◽

Dawei Yu ◽

Junya Zhang ◽

...

Keyword(s):

Membrane Fouling ◽

Membrane Filtration ◽

Membrane Bioreactor ◽

Ceramic Membrane ◽

Pure Water ◽

Ex Situ ◽

Stable Operation ◽

Chemical Cleaning ◽

Cake Layer

The cost-effective and stable operation of an anaerobic ceramic membrane bioreactor (AnCMBR) depends on operational strategies to minimize membrane fouling. A novel strategy for backwashing, filtration and relaxation was optimized for stable operation of a side stream tubular AnCMBR treating domestic wastewater at the ambient temperature. Two in situ backwashing schemes (once a day at 60 s/day, and twice a day at 60 s × 2/day) maintaining 55 min filtration and 5 min relaxation as a constant were compared. A flux level over 70% of the initial membrane flux was stabilized by in situ permeate backwashing irrespective of its frequency. The in situ backwashing by permeate once a day was better for energy saving, stable membrane filtration and less permeate consumption. Ex situ chemical cleaning after 60 days’ operation was carried out using pure water, sodium hypochlorite (NaOCl), and citric acid as the order. The dominant cake layer was effectively reduced by in situ backwashing, and the major organic foulants were fulvic acid-like substances and humic acid-like substances. Proteobacteria, Firmucutes, Epsilonbacteria and Bacteroides were the major microbes attached to the ceramic membrane fouling layer which were effectively removed by NaOCl.

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