Effect of volumetric organic loading on the nitrogen removal rate by immobilised activated sludge.
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.
Zielinska
M
M
Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Poland, 10-709 Olsztyn, Sloneczna St. 45G, Poland.
Wojnowska-Baryla
I
I
D002244:Carbon / Q000737:chemistry; D007220:Industrial Waste; D009584:Nitrogen / Q000737:chemistry / Q000302:isolation & purification*; D009930:Organic Chemicals / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry*; D014874:Water Pollutants, Chemical
D007220:Industrial Waste; D009930:Organic Chemicals; D012722:Sewage; D014874:Water Pollutants, Chemical; D002244:Carbon; D009584:Nitrogen