Treatment of cattle manures with aerated tanks in a free-stall system / Tratamento de dejetos de bovinos em tanques aerados em sistema de free-stall
Campos, Alessandro Torres; Assenheimer, Adriane; Ponciano, Patrícia Ferreira; Sousa, Francine Aparecida; Gonçalves Junior, Affonso Celso; Yanagi Junior, Tadayuki; Campos, Aloísio Torres de.
Biosci. j. (Online)
; 31(2): 518-526, mar./abr. 2015.
Artículo
en Inglés
| LILACS | ID: biblio-964102
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 11. 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.
Biblioteca responsable:
BR396.1
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