Eficiencia de un electrocoagulador como alternativa para el tratamiento de aguas residuales de una industria alimentaria
Fecha
2021-06-11Registro en:
Poveda, J., Vela, O. (2021). Eficiencia de un electrocoagulador como alternativa para el tratamiento de aguas residuales de una industria alimentaria. [Tesis de pregrado, Universidad Santo Tomás]. Repositorio
reponame:Repositorio Institucional Universidad Santo Tomás
instname:Universidad Santo Tomás
Autor
Poveda Ávila, Juan Diego
Vela Camacho, Oscar Gabriel
Institución
Resumen
In this work, the technology of electrocoagulation for the treatment of effluents form bread of rice industry was evaluated. First, the sizing and construction of a prototype cell in batch operation, with a capacity of 5 liters, was carried out. Subsequently, the 3*2 factorial design methodology was used, where the factors of current, separation between electrodes and time, evaluated at two levels each, were manipulated in order to determine the effects on the response variables chemical oxygen demand (COD) and total suspended solids (TSS). In addition, the results obtained from the factorial design in terms of percentage removal were statistically analyzed with a multivariate test using IBM SPSS statistics software.
The statistical analysis allowed the choice of an optimal configuration among the 8 treatments implemented through the factorial design. The operating conditions of the chosen treatment were 2 Ampere current, 15 mm electrode spacing, treatment time of 40 minutes, obtaining removals of 84.8%, 82.1% and 82.2% for COD, TSS and BOD5, respectively. Additionally, the system worked at a current density of 0.924mA/cm2, voltage of 4.3 Volts and with Al/Fe electrodes in monopolar connection.
On the other hand, the treated effluent was compared with resolution 631/2015, evidencing that the parameters COD, TSS and BOD5, exceeded the VLMP stipulated in the standard, however, pH and temperature were within the acceptable range. Finally, economic aspects were discussed, determining theoretical energy and electrode consumption of 1,145kWh/m3 and 89.46gAl/m3 at 40 min, respectively. In the same way, the theoretical operating cost of the treatment was calculated, obtaining a value of $2,229.8/m3.