Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions
The scope of this study was to investigate if using zeolite as a reactive material in a vertical-flow wetland under field conditions improves ammonium removal from domestic wastewater in the long term. The experimental setup consisted of two pilot-scale first stage French vertical flow treatment wet...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2022-02-01
|
| Series: | Water Science and Technology |
| Subjects: | |
| Online Access: | http://wst.iwaponline.com/content/85/3/746 |
| _version_ | 1828881263197421568 |
|---|---|
| author | Hernán Ruiz-Ocampo Katharina Tondera Joëlle Paing Pascal Molle Florent Chazarenc |
| author_facet | Hernán Ruiz-Ocampo Katharina Tondera Joëlle Paing Pascal Molle Florent Chazarenc |
| author_sort | Hernán Ruiz-Ocampo |
| collection | DOAJ |
| description | The scope of this study was to investigate if using zeolite as a reactive material in a vertical-flow wetland under field conditions improves ammonium removal from domestic wastewater in the long term. The experimental setup consisted of two pilot-scale first stage French vertical flow treatment wetlands (2.3 m2 surface area each), which were implemented under field scale conditions inside a wastewater treatment plant in the central region of France (L'Encloitre, 37360). The filters were operated during 27 months. A compact pilot containing Leca® as a main filtration layer (Ø 1–5 mm) was compared to a similar one filled with natural zeolite (Ø 2–5 mm). The pilots were fed according to regular feeding/resting periods (3½/7 days) and the nominal loading rate was of 300 g COD m−2 d−1 and 33 g·N·m−2·d−1 during operation. In both pilots, results showed a removal efficiency of more than 90 and 85% for TSS and COD, respectively. They also showed an increased NH4-N removal of 9% on average (total removal efficiency of 84%) with the use of zeolite compared to Leca®. The ion exchange capacity of zeolite seemed not to be affected after 27 months of experiments; however, the material was compacted and more friable after operation. HIGHLIGHTS
A zeolite layer in a French Vertical-Flow Wetland improved the ammonium removal.;
Seasonal effects impacted the removal efficiency.;
Material compaction of the zeolite during the trial period needs to be further investigated.; |
| first_indexed | 2024-12-13T10:04:19Z |
| format | Article |
| id | doaj.art-35daa94bf4434ef9b2d86573811996bd |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-13T10:04:19Z |
| publishDate | 2022-02-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-35daa94bf4434ef9b2d86573811996bd2022-12-21T23:51:34ZengIWA PublishingWater Science and Technology0273-12231996-97322022-02-0185374675510.2166/wst.2022.022022Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditionsHernán Ruiz-Ocampo0Katharina Tondera1Joëlle Paing2Pascal Molle3Florent Chazarenc4 Institut Mines Telecom Atlantique, GEPEA, UMR CNRS 6144, 4 rue Alfred Kastler, Nantes 44307, France INRAE, REVERSAAL, Villeurbanne F-69100, France CREA Step, 49 route de la Borde, Beaumont Louestault 37370, France INRAE, REVERSAAL, Villeurbanne F-69100, France INRAE, REVERSAAL, Villeurbanne F-69100, France The scope of this study was to investigate if using zeolite as a reactive material in a vertical-flow wetland under field conditions improves ammonium removal from domestic wastewater in the long term. The experimental setup consisted of two pilot-scale first stage French vertical flow treatment wetlands (2.3 m2 surface area each), which were implemented under field scale conditions inside a wastewater treatment plant in the central region of France (L'Encloitre, 37360). The filters were operated during 27 months. A compact pilot containing Leca® as a main filtration layer (Ø 1–5 mm) was compared to a similar one filled with natural zeolite (Ø 2–5 mm). The pilots were fed according to regular feeding/resting periods (3½/7 days) and the nominal loading rate was of 300 g COD m−2 d−1 and 33 g·N·m−2·d−1 during operation. In both pilots, results showed a removal efficiency of more than 90 and 85% for TSS and COD, respectively. They also showed an increased NH4-N removal of 9% on average (total removal efficiency of 84%) with the use of zeolite compared to Leca®. The ion exchange capacity of zeolite seemed not to be affected after 27 months of experiments; however, the material was compacted and more friable after operation. HIGHLIGHTS A zeolite layer in a French Vertical-Flow Wetland improved the ammonium removal.; Seasonal effects impacted the removal efficiency.; Material compaction of the zeolite during the trial period needs to be further investigated.;http://wst.iwaponline.com/content/85/3/746compact wetlandfrench reed bedleca® |
| spellingShingle | Hernán Ruiz-Ocampo Katharina Tondera Joëlle Paing Pascal Molle Florent Chazarenc Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions Water Science and Technology compact wetland french reed bed leca® |
| title | Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| title_full | Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| title_fullStr | Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| title_full_unstemmed | Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| title_short | Long-term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| title_sort | long term investigations on ammonium removal with zeolite in compact vertical flow treatment wetlands under field conditions |
| topic | compact wetland french reed bed leca® |
| url | http://wst.iwaponline.com/content/85/3/746 |
| work_keys_str_mv | AT hernanruizocampo longterminvestigationsonammoniumremovalwithzeoliteincompactverticalflowtreatmentwetlandsunderfieldconditions AT katharinatondera longterminvestigationsonammoniumremovalwithzeoliteincompactverticalflowtreatmentwetlandsunderfieldconditions AT joellepaing longterminvestigationsonammoniumremovalwithzeoliteincompactverticalflowtreatmentwetlandsunderfieldconditions AT pascalmolle longterminvestigationsonammoniumremovalwithzeoliteincompactverticalflowtreatmentwetlandsunderfieldconditions AT florentchazarenc longterminvestigationsonammoniumremovalwithzeoliteincompactverticalflowtreatmentwetlandsunderfieldconditions |