Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.2166/wst.2019.304 |
| Title (Primary) | Modeling dynamics of organic carbon and nitrogen removal during aeration interruption in aerated horizontal flow treatment wetlands |
| Author | Boog, J.; Kalbacher, T.; Nivala, J.; van Afferden, M.; Müller, R.A.
|
| Source Titel | Water Science and Technology |
| Year | 2019 |
| Department | ENVINF; UBZ |
| Volume | 80 |
| Issue | 3 |
| Page From | 597 |
| Page To | 606 |
| Language | englisch |
| Supplements | Supplement 1 |
| Keywords | constructed wetland, nature-based solution, nitrification, reactive transport modeling, resilience, system analysis |
| Abstract | Despite recent developments in process-based modeling of treatment
wetlands (TW), the dynamic response of horizontal flow (HF) aerated
wetlands to interruptions of aeration has not yet been modeled. In this
study, the dynamic response of organic carbon and nitrogen removal to
interruptions of aeration in an HF aerated wetland was investigated
using a recently-developed numerical process-based model. Model
calibration and validation were achieved using previously obtained data
from pilot-scale experiments. Setting initial concentrations for
anaerobic bacteria to high values ( 35–70 mg L−1)
and including ammonia sorption was important to simulate the treatment
performance of the experimental wetland in transition phases when
aeration was switched off and on again. Even though steady-state air
flow rate impacted steady-state soluble chemical oxygen demand (CODs), ammonia nitrogen (NH4–N) and oxidized nitrogen (NOx–N)
concentration length profiles, it did not substantially affect
corresponding effluent concentrations during aeration interruption. When
comparing simulated with experimental results, it is most likely that
extending the model to include mass transfer through the biofilm will
allow to better explain the underlying experiments and to increase
simulation accuracy. This study provides insights into the dynamic
behavior of HF aerated wetlands and discusses assumptions and
limitations of the modeling approach. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22593 |
| Boog, J., Kalbacher, T., Nivala, J., van Afferden, M., Müller, R.A. (2019): Modeling dynamics of organic carbon and nitrogen removal during aeration interruption in aerated horizontal flow treatment wetlands Water Sci. Technol. 80 (3), 597 - 606 10.2166/wst.2019.304 |
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