Evaluación de remoción de materia orgánica empleando polipropileno reutilizado como medio de soporte móvil para el tratamiento secundario de agua residual en una industria láctea .

Abstract

The present research aimed to determine the efficiency of organic matter removal from an industrial secondary dairy effluent, using reused polypropylene, as a mobile carrier, in a pilot-scale aerobic bioreactor. For this, the bioreactor was designed, taking referential parameters of industrial reactors and removal of organic matter, establishing a volume of 7.6 l, and volumetric organic loads between 1.54 to 2.42 kg/m3.d, it was also filled at 70% of the volume with reused polypropylene. The bioreactor was acclimatized for 70 days, and operated in three stages of 21 days, using average volumetric loads of 1.62, 1.79 and 2.44 kg/m3.d. The results obtained, showed that the biofilm adhered to the polypropylene, reached efficiencies of removal of organic matter in terms of COD, of: 68.72, 64.35 and 50.60%, for respectively volumetric loads of 1.62, 1.79 and 2.44 kg/m3.d. Obtaining in the effluent of the system concentrations of organic matter below 500 mg/l, complying with the maximum permissible limits of the Ecuadorian Effluent Discharge Environmental Quality standard.