bachelorThesis
Avaliação da eletrofloculação no pós-tratamento de efluente anaeróbico de abatedouro e frigorífico de suínos
Fecha
2018-06-21Registro en:
SILVA, Flavia Manente da. Avaliação da eletrofloculação no pós-tratamento de efluente anaeróbico de abatedouro e frigorífico de suínos. 2018. Trabalho de Conclusão de Curso (Bacharelado em Engenharia Ambiental) - Universidade Tecnológica Federal do Paraná, Medianeira, 2018.
Autor
Silva, Flavia Manente da
Resumen
The demand for quality water for domestic and industrial consumption is increasing every day, as it is needed to find alternatives that are economically and environmentally viable to treat wastewater from industrial processes. An example of an alternative is electroflocculation, a technique that is based on the use of electric current that provides the dissolution of the metal electrodes and consequently the generation of coagulant compounds, making possible the removal of effluent contaminants. In order to evaluate the performance of the electroflocculation applied in the effluent treatment of swine slaughterhouse and fridge submitted to an anaerobic pre-treatment, a central rotational compound (CRC) was designed to evaluate the removal of color, turbidity and COD and cost of treatment with two independent variables: electric current applied and electrolysis time, obtaining a complete factorial 2² with addition of 4 axial points and 4 repetitions at the central point, totaling 12 trials. The highest removal of the color was 87.30% obtained in 4th test, carried out with electric current of 0.73 A and time of 18m34s. For COD and turbidity the best performance was the 12th test with current of 0.55 A for 20 minutes, obtaining removals of 80.60 and 76.38%, respectively. It was observed that tests with high removal of the parameters present high costs, thus optimizing the process in order to obtain greater removals with lower cost. The operational condition that provides such results is represented by electric current of 0.75 A and time of 10m, obtaining removal of color, turbidity and COD of 88.85, 75.97 and 95.22%, respectively, with cost of 1.45 R $.m-3. In addition, it was estimated that it is possible to produce up to 10,832 m³ of methane made from raw effluent produced daily when used for electric power generation, providing a financial return of 1.13 R $.m-3 of treated effluent.