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Updated: Aug 8, 2026

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
Published on: December 25, 2015
Effect of volumetric organic loading on the nitrogen removal rate by immobilised activated sludge
M Zielinska1, I Wojnowska-Baryla
1Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Poland, 10-709 Olsztyn, Sloneczna St. 45G, Poland.
Abstract:
Activated sludge was immobilised in a porous ceramic carrier to create a stationary core of a bio-reactor. Municipal wastewater was treated in this reactor under varied conditions of volumetric organic loading rate (expressed by chemical oxygen demand (COD)) that were the following: 6.5, 8.0, 20.8, 48.8 g COD l(-1) d(-1). The rate constants of ammonification, nitrification and denitrification under aerobic conditions were determined. All rate constants increased with a growth in volumetric loading rate, but the highest loading value of 48.8 g COD l(-1) d(-1) limited the ammonification and nitrification rates.
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