In situ microbial treatment of landfill leachate using aerated lagoons
| Autor: | Eric M. Adetutu, M. Mehmood, David B. Nedwell, Andrew S. Ball |
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| Rok vydání: | 2009 |
| Předmět: |
Environmental Engineering
Bioreactor landfill Renewable Energy Sustainability and the Environment Air Chemical oxygen demand Aerobic treatment system Environmental engineering Bioengineering General Medicine Garbage Water Purification Oxygen Biodegradation Environmental Microbial population biology Wastewater Environmental chemistry Environmental science Aerated lagoon Leachate Nitrogen Compounds Water Microbiology Waste Management and Disposal Effluent Water Pollutants Chemical |
| Zdroj: | Bioresource Technology. 100:2741-2744 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2008.11.031 |
| Popis: | The aim of this study was to assess the efficiency of leachate treatment by microbial oxidation in four connected on-site aerated lagoons at a landfill site. The landfill site was found to be in an ageing methanogenic state, producing leachate with relatively low COD (mean value 1740 mg l(-1)) and relatively high ammonium concentrations (mean value 1241 mg l(-1)). Removal of COD averaged 75%, with retention times varying from 11 to 254 days. Overall 80% of the N load was removed within the plant, some by volatilisation of ammonium. Microbial community profiling of the water from each lagoon showed a divergent community profile, presumably a reflection of the nutrient status in each lagoon. In municipal solid waste landfills under similar conditions, leachate treatment through a facultative aerobic system in which sequential aerobic and anaerobic microbial oxidations occurred can readily be achieved using a simple two-lagoon system, suggesting this technology can be economic to install and simple to run. |
| Databáze: | OpenAIRE |
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