Long-term evaluation of different strategies of cationic polyelectrolyte dosage to control fouling in a membrane bioreactor treating refinery effluent
Type
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Journal
Article
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Author
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Aline
R. Alkmim
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Author
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Paula
R. da Costa
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URL
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Volume
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0
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Issue
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ja
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Pages
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1-32
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Publication
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Environmental
Technology
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Date
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October
28, 2015
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Extra
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PMID:
26508453
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DOI
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Abstract
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Researchers
examined the long-term use of cationic polyelectrolyte to improve the sludge
filterability and to control membrane fouling in bioreactor membrane while
treating refinery effluents in pilot scale. Corrective and preventive
cationic polyelectrolyte dosages were added to the MBR to evaluate the
membrane fouling mitigation in both strategies.
The results confirmed that the use of the MPE increased sludge filterability and reduced membrane fouling. During the monitoring period, stress events occurred due to the increase in oil and grease and phenol concentrations in the MBR feeds. Preventive use of cationic polyelectrolyte allowed for a more effective and stable sludge filterability, with lower cationic polyelectrolyte consumption and without decreasing MBR overall pollutant removal performance. |
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