In this paper an evaluation of the effluent treatment plant of a slaughterhouse which processes 650 head of cattle a day is presented. Some problems in the operation of the anaerobic reactor and anaerobic lagoons caused by the presence of fats and suspended solids in the effluent were detected. A flotation system by pressurized air injection was tested at the plant. The fat removal efficiency obtained was 63% and 37% for red water and green water, respectively. In order to improve the hydrolysis of particulate matter, a system of two UASB reactors with recirculation, connected in series, was tested at laboratory scale. Removal efficiency was 77% for soluble COD and 82% for insoluble COD, at a volumetric load of 1.8 kgCOD/m3/d. Based on the results of these studies, several modifications in the treatment plant were proposed.
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Research Article| December 01 1995
Treatment of slaughterhouse wastewater
Water Sci Technol (1995) 32 (12): 99–104.
J. Martínez, L. Borzacconi, M. Mallo, M. Galisteo, M. Viñas; Treatment of slaughterhouse wastewater. Water Sci Technol 1 December 1995; 32 (12): 99–104. doi: https://doi.org/10.2166/wst.1995.0467
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