Anaerobic Fluidized Bed Reactor for the Treatment of Landfill Leachates

Treatability of the sanitary young landfill leachate in a pilot-scale anaerobic fluidized bed reactor during reactor startup and steady-state phases was investigated. All runs were carried out at 35°C due to environmental conditions in the mesophilic anaerobic fluidized bed reactor (AFBR) while orga...

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Bibliographic Details
Published in:Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering Toxic/hazardous substances & environmental engineering, 2004-12, Vol.39 (8), p.2195-2204
Main Authors: Gulsen, H., Turan, M., Armagan, B.
Format: Article
Language:English
Subjects:
Anaerobic conditions
Anaerobic treatability
Anaerobic treatment
Bacteria, Anaerobic - physiology
Biogas production
Biomass
Biomass growth
Bioreactors
Fluidized bed reactor
Fluidized beds
Landfill leachate
Landfills
Loading rate
Methane
Methane - analysis
Organic loading
Oxygen - analysis
Phases
Reactors
Waste Disposal, Fluid - methods
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Summary:Treatability of the sanitary young landfill leachate in a pilot-scale anaerobic fluidized bed reactor during reactor startup and steady-state phases was investigated. All runs were carried out at 35°C due to environmental conditions in the mesophilic anaerobic fluidized bed reactor (AFBR) while organic loading rate (OLR) was increased from 2.5 to 37 gCOD/L-day during the 220 days of operation. The AFBR process attained steady-state conditions about on day 80 and a good and stable COD removal were achieved at about 90%. Biogas production in the bed continuously increased during the process. The mean specific biogas production was found 0.52 L biogas/gCOD rem while the methane content was about 75%. The attached biomass concentration, measured as volatile solids rapidly increased as containing about 90% of the total biomass concentration. Furthermore, an increase in the suspended solid concentration was found as an evidence of biomass detachment from the media.
ISSN:1093-4529
1532-4117
DOI:10.1081/ESE-120039384