Abstract
The feasibility of applying the up-flow anaerobicsludge blanket (UASB) treatment for poultry waste (faeces)water was examined. A continuous-flow UASB pilot scalereactor of 3.50 L capacity using mixed culture was operatedfor 95 days to assess the treatability of poultry waste-water and its methane production. The maximum chemicaloxygen demand (COD) removed was found to be 78% whenorganic loading rate (OLR) was 2.9 kg COD m-3 day-1 athydraulic retention times (HRT) of 13.2 hr. The averagebiogas recovery was 0.26 m3 CH4 kg COD with an averagemethane content of 57% at mean temperature of 30 °C.Data indicate more rapid methanogenesis with higher loadingrates and shorter hydraulic retention times. At feedconcentration of 4.8 kg COD m-3 day-1, anaerobic digestionwas severely retarded at all hydraulic retention timetested. This complication in the reactor operations may belinked to build-up of colloidal solids often associated withpoultry waste water and ammonia toxicity. Isolates fromgranular sludge and effluent were found to be facultativeanaerobes most of which were Pseudomonas genera.
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Atuanya, E.I., Aigbirior, M. Mesophilic Biomethanation and Treatment of Poultry Waste-Water Using Pilot Scale UASB Reactor. Environ Monit Assess 77, 139–147 (2002). https://doi.org/10.1023/A:1015871601658
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DOI: https://doi.org/10.1023/A:1015871601658