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metadata.artigo.dc.title: Characterization of an acidification and equalization tank (AET) operating as a primary treatment of swine liquid effluent
metadata.artigo.dc.creator: Motteran, Fabrício
Pereira, Erlon Lopes
Campos, Claudio Milton Montenegro
metadata.artigo.dc.subject: Swine effluent
Organic matter removal
Pollution control
Inexpensive technologies
Liquid effluents - Treatment
Efluente de suínos
Remoção de matéria orgânica
Controle de poluição
Tecnologias baratas
Efluentes líquidos - Tratamento
metadata.artigo.dc.publisher: Instituto de Tecnologia do Paraná - Tecpar May-2013
metadata.artigo.dc.identifier.citation: MOTTERAN, F.; PEREIRA, E. L.; CAMPOS, C. M. M. Characterization of an acidification and equalization tank (AET) operating as a primary treatment of swine liquid effluent. Brazilian Archives of Biology and Technology, Curitiba, v. 56, n. 3, p. 485-494, May/June 2013.
metadata.artigo.dc.description.abstract: This work evaluated the potential of the acidification equalization tank (AET) used as a primary treatment unit, treating the hog farming wastewater. The treatment system consisted of a degritter with a triangular-notch weir, for measuring the flow, a static sieve, and an acidification and equalization tank (AET), an anaerobic baffled reactor (ABR), an upflow anaerobic sludge blanket (UASB) reactor, a settling tank, a greenhouse for fertirrigation and two infiltration ponds. The AET had a net capacity of 8,000 liters, internally covered with asphalt blanket, worked based on surface loading rates application. The unit operated continuously, with its flow varying from 0.1 to 10 L s-1. To determine the efficiency, the following parameters were measured: pH; COD; BOD; volatile and fixed solids; settleable solids; total, intermediate and partial alkalinity and total acidity. The COD removal varied from 5 to 20%. The average pH was 7.3 and the total, intermediate and partial alkalinity in the effluent, were 1919, 846, 1197 mg L-1, respectively. The total acidity in the effluent was 34 mg L-1. The influent and effluent total BOD and oil & grease concentrations were 3436 and 3443 mg L-1, and 415 and 668 mg L-1, respectively. It was found that the AET worked properly concerning the acidification, equalization and sedimentation processes, confirming low cost of implementation and easy operation, when compared to other traditional decanters.
metadata.artigo.dc.language: en_US
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