Open AccessPerformance of two parallel covered lagoon digesters in the treatment of pig farm wastewaters
Author(s) -
Antonella Araújo de Almeida,
André Pereira Rosa,
Izabelle de Paula Sousa,
Silas Modesto de Melo,
Alisson Carraro Borges
Publication year - 2021
Publication title -
engenharia na agricultura
Language(s) - English
Resource type - Journals
eISSN - 2175-6813
pISSN - 1414-3984
DOI - 10.13083/reveng.v29i1.11576
Subject(s) - effluent , environmental science , sewage treatment , wastewater , pig farming , agriculture , significant difference , environmental engineering , agricultural science , zoology , mathematics , ecology , biology , animal production , statistics
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.