Treatment of cattle manure with aerated tanks in a free-stall system


  • Alessandro Torres Campos Universidade Federal de Lavras
  • Adriane Assenheimer Universidade Estadual do Oeste do Paraná
  • Patrícia Ferreira Ponciano Universidade Federal de Lavras
  • Francine Aparecida Sousa Universidade Federal de Lavras
  • Affonso Celso Gonçalves Junior Universidade Estadual do Oeste do Paraná
  • Tadayuki Yanagi Junior Universidade Federal de Lavras
  • Aloísio Torres de Campos Empresa Brasileira de Pesquisa Agropecuária



aerator, dairy bovine culture, batch activated sludge, residues


The objective of this study was to assess a cattle manure treatment system in aerated tanks in a free-stall confinement system, where the recycled wastewater was used to clean the facilities and the effluent was applied to forage cultivation areas. A batch activated sludge reactor with a prolonged intermittent aeration system scaled to a 24-day hydraulic retention time was used, and the wastewater was diluted at a volume ratio of 1:1. Samples were taken at the input and interior of the aeration tanks, at the irrigation pipe exit, and from pure animal waste. The following parameters were determined: pH, temperature, oil and grease, total biochemical oxygen demand (BOD) and chemical oxygen demand (COD), total solids, total nitrogen and ammoniacal nitrogen, potassium, phosphorus, and magnesium. The results indicated that the aerobic biological treatment is effective in reducing and stabilising organic matter in wastewater.


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How to Cite

CAMPOS, A.T., ASSENHEIMER, A., PONCIANO, P.F., SOUSA, F.A., GONÇALVES JUNIOR, A.C., YANAGI JUNIOR, T. and DE CAMPOS, A.T., 2015. Treatment of cattle manure with aerated tanks in a free-stall system . Bioscience Journal [online], vol. 31, no. 2, pp. 518–526. [Accessed20 April 2024]. DOI 10.14393/BJ-v31n2a2015-22186. Available from:



Agricultural Sciences