Kinetics characteristics of shortcut nitrifying reactor
The tracer tests were performed applying pulse stimulus-response technique to an internal-loop granular sludge bed shortcut nitrifying reactor. The series number N 1.02 in the circulating section indicated that the flow pattern was similar to that of continuously stirred tank reactor (CSTR), and the...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2006-01-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2006.01.0014 |
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| Summary: | The tracer tests were performed applying pulse stimulus-response technique to an internal-loop granular sludge bed shortcut nitrifying reactor. The series number N 1.02 in the circulating section indicated that the flow pattern was similar to that of continuously stirred tank reactor (CSTR), and the dispersion number D/uL 0.00148 in the settling section indicated that the flow pattern was similar to that of plug flow reactor (PFR). A model of CSTR and PFR in series was constructed as flow model for the reactor. The ammonia escape during aeration was analyzed and described by a kinetic model, where the model parameter <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/1008-9209-2006-01-0014-I002.jpg"/> of 0.692 L·h<sup>-1</sup> was deduced from experiment. Based on material balance, a kinetic model for internal-loop granular sludge bed shortcut nitrifying reactor was constructed, the model parameters v<sub>max</sub> of 8.13 mg NH<sub>4</sub><sup>+</sup>-N·(g MLSS)<sup>-1</sup>·h<sup>-1</sup> and K<sub>s</sub> of 1.73 mg NH<sub>4</sub><sup>+</sup>-N·L<sup>-1</sup> were determined. Predictions inferred from the model were in good agreement with the experimental data obtained from actual operation, the relative errors between them being 12.8%. |
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| ISSN: | 1008-9209 2097-5155 |