<abstract xmlns="http://www.w3.org/1999/xhtml">

In this paper, firstly, the relevant parameters of influent C/N quantification were selected, and then, on the basis of the relevant parameters, the apparent shear force formula was deduced, and the apparent shear force was used to reflect the hydraulic condition of the reactor. Next, the experimental device, operation method, influent water quality and analysis method were determined, and the influences of influent C/N on the sludge granulation process were derived from the influences of group I C/N ratio on anaerobic granular sludge and group II C/N ratio on anaerobic granular sludge. Then, the return sludge from the Guangzhou sewage treatment plant in Guangdong Province was selected as the experimental seed sludge, and the methanol concentration of 0.13g/L (COD=200mg/L) was used as the experimental water quality, and the influences of influent C/N on nutrient N2O denitrification were illustrated by the experimental analyses. The results showed that the NO2− − N accumulation rate was maintained above 81% in all five water intake modes, and when the ratio of water intake (1:1) and (2:1), a higher concentration of NO2− − N was accumulated in the first nitrification stage of 26.5 mg/L and 24.9 mg/L, respectively, which could give full play to the advantages of nitrifying bacteria to achieve nitrification rapidly and also reduce the production of nutrient salt N2O. This study combines macro-experiment and micro-analysis to provide a theoretical basis for granular sludge technology.
</abstract>

In this paper, firstly, the relevant parameters of influent C/N quantification were selected, and then, on the basis of the relevant parameters, the apparent shear force formula was deduced, and the apparent shear force was used to reflect the hydraulic condition of the reactor. Next, the experimental device, operation method, influent water quality and analysis method were determined, and the influences of influent C/N on the sludge granulation process were derived from the influences of group I C/N ratio on anaerobic granular sludge and group II C/N ratio on anaerobic granular sludge. Then, the return sludge from the Guangzhou sewage treatment plant in Guangdong Province was selected as the experimental seed sludge, and the methanol concentration of 0.13g/L (COD=200mg/L) was used as the experimental water quality, and the influences of influent C/N on nutrient N2O denitrification were illustrated by the experimental analyses. The results showed that the NO2− − N accumulation rate was maintained above 81% in all five water intake modes, and when the ratio of water intake (1:1) and (2:1), a higher concentration of NO2− − N was accumulated in the first nitrification stage of 26.5 mg/L and 24.9 mg/L, respectively, which could give full play to the advantages of nitrifying bacteria to achieve nitrification rapidly and also reduce the production of nutrient salt N2O. This study combines macro-experiment and micro-analysis to provide a theoretical basis for granular sludge technology.

Influence of influent C/N on sludge granulation process and nutrient removal pattern

Key Laboratory of Organic Polymer Photoelectric Materials, School of Sciences, Xi’an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device

Applied Mathematics and Nonlinear Sciences

This work is licensed under the Creative Commons Attribution 4.0 International License.

In this paper, firstly, the relevant parameters of influent C/N quantification were selected, and then, on the basis of the relevant parameters, the apparent...

Influence of influent C/N on sludge granulation process and nutrient removal pattern

Published Online: Nov 18, 2023

Page range: -

Received: Jan 29, 2023

Accepted: May 29, 2023

DOI: https://doi.org/10.2478/amns.2023.2.01169

Keywords
Influent C/N, Quantification, Anaerobic granular sludge, Nutrient denitrification, NO

© 2023 Yuan Ge et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Influence of influent C/N on sludge granulation process and nutrient removal pattern

Published Online: Nov 18, 2023

Page range: -

Received: Jan 29, 2023

Accepted: May 29, 2023

DOI: https://doi.org/10.2478/amns.2023.2.01169

KeywordsInfluent C/N, Quantification, Anaerobic granular sludge, Nutrient denitrification, NO

© 2023 Yuan Ge et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Influent C/N, Quantification, Anaerobic granular sludge, Nutrient denitrification, NO