Desempenho de Reatores Anaeróbios Horizontais de Leito Fixo (RAHLF) para tratamento de águas residuárias de suinocultura

Abstract

Swine breeding is an activity with great potential for pollution due to the number of contaminants in their effluents, which has high concentration of organic matter and pathogenic organisms, representing a source of contamination for water resources, the soil and the air. In this context, the objective of this research was to create Horizontal Anaerobic Reactor of Fixed Bed (HARFB) in series aiming at the removal of organic load from wastewater of swine breeding at Fazenda Experimental of Universidade Federal de Mato Grosso. The physical (color, turbidity and total solids), chemical (pH, BOD5, COD total, total phosphorus, total nitrogen and volumetric organic load of, BOD5 and COD) and microbiological (total and thermotolerant coliforms) parameters were monitored. Arduino sensors were used for monitoring the internal temperature of the reactors. The HARFB achieved significant efficiency in all analyzed parameters, being effective in removing mainly organic matter (BOD5, CODtotal). It reached efficiency of 94.09% of color, 90.4% of turbidity and 92% of DQOtotal. The concentrations of COV Kg DBO5/ m³. d and DQOtotal/m³.d achieved removal efficiency of 96.97% and 94.13%, respectively. The system has significantly achieved removal efficiency mainly in organic load. However, only the concentrations of DQOtotal, DBO5, total solids and pH band were in accordance with current legislation regarding putting effluents into water.