Respirometric activity of activated sludge in sequencing batch reactor depending on substrate and dissolved oxygen concentration

• Autorzy: Zielińska M. , Bernat K. , Cydzik-Kwiatkowska A. , Wojnowska-Baryła I.
• Języki publikacji: EN

Abstrakty

EN

The effect of the food/microorganisms (F/M) ratio and dissolved oxygen (DO) concentration in sequencing batch reactors (SBRs) on the microbial activity has been examined. One of the SBRs was fed with synthetic wastewater containing inorganic carbon compounds (COD/N ratio 0.7 g COD/g N). To the other SBR, both inorganic and organic carbon was supplied leading to 6.9 g COD/g N. The F/M ratios in the reactors were 0.02 and 0.065 g COD/g cell COD, respectively. Under the above feeding conditions, two experimental series were carried out at DO concentration of 0.5 and 1.5 mg O2/dm3. The activity of the biomass was determined through respirometric tests based on the determination of oxygen uptake rate (OUR). Independently on operational parameters, nitrification was the process consuming the highest amount of oxygen. Both at the FIM ratio of 0.02 and 0.065 g COD/g cell COD, higher DO concentration resulted in increased carbonaceous and endogenous respiration.

Słowa kluczowe

EN

activated sludge process; dissolved oxygen concentration; activated sludge; respirometric test; sequencing batch reactor

PL

osad czynny; proces osadu czynnego; test respirometryczny; sekwencyjny reaktor porcjowy; stężenie rozpuszczonego tlenu

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2012
• Tom: Vol. 38, nr 2
• Strony: 41--49
• Opis fizyczny: Bibliogr. 21 poz., tab., rys/

Twórcy

autor

Zielińska M.

• Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn

autor

Bernat K.

• Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn

autor

Cydzik-Kwiatkowska A.

• Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn

autor

Wojnowska-Baryła I.

• Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn

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