The aim of this study was to determine a short-term and long-term effect of temperature on the anammox rate and determination of temperature coefficients in the Arrhenius and Ratkowsky equations. The short-term effects of temperature on the anammox granular biomass were investigated in batch tests at ten different temperatures in the range of 10–55 °C. The maximum overall nitrogen removal rate of 1.3 gN gVSS−1·d−1 was observed at 40 °C (VSS: volatile suspended solids). The minimum rate, close to 0 gN gVSS−1·d−1, was observed for the limits of the analyzed temperature range (10 and 55 °C). The activity tests carried out at 55 °C showed an irreversible loss of the activity due to the observed biomass lysis. Subsequently to the batch tests, a sequencing batch reactor (SBR) was operated at different temperatures (from 30 to 11 °C) to determine the long-term effects of temperature. The system was successfully operated at 15 °C, but when temperature was decreased to 11 °C, nitrite started to accumulate and the system lost its stability. The temperature coefficient (θ) was 1.07 for the batch tests carried out in the temperature range of 10–40 °C. In contrast, during the long-term SBR operation, substantially different θ had to be estimated for two temperature ranges, 1.07 (T = 15–30 °C) and 1.65 (T = 11–15 °C).
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Research Article|
March 01 2016
Influence of temperature on the activity of anammox granular biomass
D. Sobotka;
1Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gdansk, Poland
E-mail: [email protected]
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K. Czerwionka;
K. Czerwionka
1Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gdansk, Poland
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J. Makinia
J. Makinia
1Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gdansk, Poland
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Water Sci Technol (2016) 73 (10): 2518–2525.
Article history
Received:
September 21 2015
Accepted:
February 09 2016
Citation
D. Sobotka, K. Czerwionka, J. Makinia; Influence of temperature on the activity of anammox granular biomass. Water Sci Technol 18 May 2016; 73 (10): 2518–2525. doi: https://doi.org/10.2166/wst.2016.103
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