Modelagem, validação e dimensionamento de uma unidade de bancada para filtração granular de efluentes da suinocultura

Abstract

In this paper we proposed a new technology for the filtration of pig manure which aims to recycle the biomass digestion reactors, allowing a higher biogas production. The generation of biogas from the anaerobic digestion of pig manure can contribute to the achievement of renewable energy and sustainability of the production process. A higher biogas productivity increase is linked to the speed of microbiological conversion of organic matter in the digester, which can be performed among others, by means of recycle sludge (with high concentration of active bacteria in the anaerobic digestion process). In this context, the proposed was validated by Wenzel (2013) to evaluate the filtration process using manure as granular media basalt model. It was the classification of granular material 11 which was obtained particle sizes and porosities and the average density of the particles made. We calculated the minimum fluidization velocity for different porosities. Calculating the coefficient of correlation for initial filter proposed by Tien (2013) and also the initial pressure drop with literature data was possible. By adjusting the model functions ( 𝐹 ̅ and 𝐺 ̅) with literature data to obtain the parameters used in this work was possible conditions and parameters of 𝐹 ̅, 𝛼 1 and 𝛼 2, equal to 6.29048x104 and 0.5624 respectively function and the parameters of the 𝐺 ̅, 𝛽 1 and 𝛽 2, 3.73604x104 and -0.2129, respectively function. It was then possible simulations efficiency and pressure drop for different particle sizes. It was determined after the length of the bed 3 meters, the experimental period of 3 hours and adjustable filter column diameter of 60 cm. Particle sizes with very low efficiencies could be discarded.