Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions
The HYDRUS wetland module is widely used together with the biokinetic model CWM1 to simulate reactive transport of contaminants in constructed wetlands. However, this approach has not been used previously to simulate processes in peat-based wetlands operating in cold climates and treating mining-inf...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/352650 2024-09-15T17:54:48+00:00 Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions Khan, Uzair Akbar Postila, Heini Kujala, Katharina Heiderscheidt, Elisangela Ronkanen, Anna-Kaisa Suomen ympäristökeskus The Finnish Environment Institute 2023-01-07T10:46:47Z application/pdf http://hdl.handle.net/10138/352650 eng eng Elsevier BV Ecological Engineering 10.1016/j.ecoleng.2022.106790 0925-8574 106790 184 http://hdl.handle.net/10138/352650 URN:NBN:fi-fe202301071751 CC BY 4.0 openAccess model mine water peatland nitrogen cold climate kosteikot turvemaat kaivosvesi päästöt typpi kulkeutuminen virtaus mallit mallit arktinen alue A1 Journal article (refereed), original research A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä 2023 ftunivhelsihelda 2024-07-31T23:42:49Z The HYDRUS wetland module is widely used together with the biokinetic model CWM1 to simulate reactive transport of contaminants in constructed wetlands. However, this approach has not been used previously to simulate processes in peat-based wetlands operating in cold climates and treating mining-influenced water. In this study, the goal was to clarify changes in flow, transport, and nitrogen removal processes in cold climate treatment peatlands by assessing the performance of HYDRUS-CWM1. Flow and non-reactive transport of tracer, and reactive transport of ammonium, nitrite, and nitrate, in two pilot wetlands operated under controlled conditions representing frozen (winter) and frost-free (summer) periods were simulated. Model simulation outputs were compared against data obtained from the pilot wetlands and from a full-scale treatment peatland treating mining-influenced water in an Arctic region. Initial peaks in tracer concentration were simulated satisfactorily, but transformation and transport of nitrogen species in treatment peatlands, especially under partially frozen conditions, were modeled with only limited success. Limitations of the model and the assumptions made for the simulations have been discussed to highlight the challenges in modeling of treatment peatlands. Highlights • Initial peaks in tracer concentration were simulated satisfactorily. • Transport of nitrogen especially in winter was modeled with limited success. • Limitations of the model and possibilities for improvement are discussed. • Possibility to use multiple HYDRUS add-ons simultaneously may be critical. Article in Journal/Newspaper Arktinen alue HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
model mine water peatland nitrogen cold climate kosteikot turvemaat kaivosvesi päästöt typpi kulkeutuminen virtaus mallit mallit arktinen alue |
spellingShingle |
model mine water peatland nitrogen cold climate kosteikot turvemaat kaivosvesi päästöt typpi kulkeutuminen virtaus mallit mallit arktinen alue Khan, Uzair Akbar Postila, Heini Kujala, Katharina Heiderscheidt, Elisangela Ronkanen, Anna-Kaisa Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
topic_facet |
model mine water peatland nitrogen cold climate kosteikot turvemaat kaivosvesi päästöt typpi kulkeutuminen virtaus mallit mallit arktinen alue |
description |
The HYDRUS wetland module is widely used together with the biokinetic model CWM1 to simulate reactive transport of contaminants in constructed wetlands. However, this approach has not been used previously to simulate processes in peat-based wetlands operating in cold climates and treating mining-influenced water. In this study, the goal was to clarify changes in flow, transport, and nitrogen removal processes in cold climate treatment peatlands by assessing the performance of HYDRUS-CWM1. Flow and non-reactive transport of tracer, and reactive transport of ammonium, nitrite, and nitrate, in two pilot wetlands operated under controlled conditions representing frozen (winter) and frost-free (summer) periods were simulated. Model simulation outputs were compared against data obtained from the pilot wetlands and from a full-scale treatment peatland treating mining-influenced water in an Arctic region. Initial peaks in tracer concentration were simulated satisfactorily, but transformation and transport of nitrogen species in treatment peatlands, especially under partially frozen conditions, were modeled with only limited success. Limitations of the model and the assumptions made for the simulations have been discussed to highlight the challenges in modeling of treatment peatlands. Highlights • Initial peaks in tracer concentration were simulated satisfactorily. • Transport of nitrogen especially in winter was modeled with limited success. • Limitations of the model and possibilities for improvement are discussed. • Possibility to use multiple HYDRUS add-ons simultaneously may be critical. |
author2 |
Suomen ympäristökeskus The Finnish Environment Institute |
format |
Article in Journal/Newspaper |
author |
Khan, Uzair Akbar Postila, Heini Kujala, Katharina Heiderscheidt, Elisangela Ronkanen, Anna-Kaisa |
author_facet |
Khan, Uzair Akbar Postila, Heini Kujala, Katharina Heiderscheidt, Elisangela Ronkanen, Anna-Kaisa |
author_sort |
Khan, Uzair Akbar |
title |
Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
title_short |
Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
title_full |
Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
title_fullStr |
Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
title_full_unstemmed |
Capability of HYDRUS wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
title_sort |
capability of hydrus wetland module to simulate flow and nitrogen removal processes in pilot-scale treatment peatlands under frost and no-frost conditions |
publisher |
Elsevier BV |
publishDate |
2023 |
url |
http://hdl.handle.net/10138/352650 |
genre |
Arktinen alue |
genre_facet |
Arktinen alue |
op_relation |
Ecological Engineering 10.1016/j.ecoleng.2022.106790 0925-8574 106790 184 http://hdl.handle.net/10138/352650 URN:NBN:fi-fe202301071751 |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1810431105901264896 |