Pig farming moves a large part of the Brazilian economy. However, due to the high polluting potential, alternatives to treat and take advantage of the effluents must be developed, being the use of digesters a possible solution. This study aimed to evaluate the performance of two parallel covered lagoon digesters (CLD) in the treatment of swine wastewater. Monitoring was performed on a farm installed in Teixeiras, Minas Gerais, Brazil, in terms of COD in the period from August 2018 to July 2019. The study demonstrated that COD removal efficiency in the CLD was 40.2 and 39.5%, which did not indicate a statistical difference at a 5% significance level. The two digesters in parallel were compatible with each other in terms of COD reduction. Furthermore, individually they did not present significant changes in their performance in the summer and winter periods.
[1]
Jo‐Shu Chang,et al.
Current advances in biological swine wastewater treatment using microalgae-based processes.
,
2019,
Bioresource technology.
[2]
R. L. R. Steinmetz,et al.
Fundamentos da digestão anaeróbia, purificação do biogás, uso e tratamento do digestato
,
2019
.
[3]
Hanping Mao,et al.
A techno-economic evaluation of anaerobic biogas producing systems in developing countries.
,
2017,
Bioresource technology.