Removal of selected pollutants from landfill leachate in the vegetation-activated sludge process
Copyright © 2025 The Author(s). Published by Elsevier Ltd.. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 195(2025) vom: 15. März, Seite 209-219 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
|
| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article Landfill leachate Municipal landfills Sequencing batch reactor Vegetation-activated sludge process Wastewater treatment Water Pollutants, Chemical Ammonia 7664-41-7 Phosphorus mehr... |
| Zusammenfassung: | Copyright © 2025 The Author(s). Published by Elsevier Ltd.. All rights reserved. The problem of leachate generated at municipal landfills, and the challenges of its logistics and disposal, are forcing the search for new, environmentally friendly methods of treatment, especially when it can be applied in situ. The method that combines constructed wetland system with conventional activated sludge process, hereinafter referred to as Vegetation-Activated Sludge Process (V-ASP), may be an interesting alternative, but still require research and comprehensive evaluation. Therefore, this study aimed to verify the effectiveness of V-ASP in the treatment of landfill leachate, the impact of two different fillings (biochar and zeolite) and hydraulic retention time (HRT) on the final removal of selected pollutants and the stability of the treatment process. The experiment was conducted for 138 days on a laboratory-scale V-ASP system layout as sequential batch reactors operating in a 24-hour cycle. The removal efficacy of N-NH4+, regardless of the substrate and the HRT that varied from 3 to 14 days, remained at around 99 %. Longer HRT favoured higher total nitrogen (TN) reduction in all examined variants, with the highest achieved at 14 days, and average TN removal ranging from 38 to 54 %. Also, the chemical oxygen demand removal efficacy increased along with HRT, while phosphorus removal efficacy remained low in all examined systems throughout the experiment. The proposed technological system fits into new trends in environmental engineering, combining technical, pro-environmental solutions and enabling potential reductions in material and energy costs |
|---|---|
| Beschreibung: | Date Completed 25.02.2025 Date Revised 25.02.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2025.02.007 |