Interpreting the effect of increasing COD loading rates on the performance of a pre-anoxic MBBR system: implications on the attached and suspended biomass dynamics and nitrification–denitrification activity

A pre-anoxic MBBR system was subjected to increasing organic loading rates up to 18 gCOD/(m 2  day). At 3 gCOD/(m 2  day), most of the incoming organic matter was removed via denitrification. However, at higher loads, anoxic COD removal became limited by the nitrite/nitrate supply from the aerobic r...

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Bibliographic Details
Published in:Bioprocess and biosystems engineering 2016-06, Vol.39 (6), p.945-957
Main Authors: Lima, P. S., Dezotti, M., Bassin, J. P.
Format: Article
Language:English
Subjects:
Bioengineering
Biofilms
Biological Oxygen Demand Analysis
Biomass
Biotechnology
Chemistry
Chemistry and Materials Science
Denitrification
Dissolved oxygen
Environmental Engineering/Biotechnology
Food Science
Industrial and Production Engineering
Industrial Chemistry/Chemical Engineering
Membrane reactors
Nitrification
Organic loading
Organic matter
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Summary:A pre-anoxic MBBR system was subjected to increasing organic loading rates up to 18 gCOD/(m 2  day). At 3 gCOD/(m 2  day), most of the incoming organic matter was removed via denitrification. However, at higher loads, anoxic COD removal became limited by the nitrite/nitrate supply from the aerobic reactor, which assumed an important role in this conversion. Despite the application of low dissolved oxygen (DO) levels (
ISSN:1615-7591
1615-7605
DOI:10.1007/s00449-016-1574-0