Livestock wastewater treatment using aerobic granular sludge.
Bioresour Technol
; 133: 630-4, 2013 Apr.
Article
em En
| MEDLINE
| ID: mdl-23453799
ABSTRACT
The present study demonstrated that aerobic granular sludge is capable of treating livestock wastewater from a cattle farm in a sequencing batch reactor (SBR) without the presence of support material. A lab scale SBR was operated for 80 d using 4 h cycle time with an organic loading rate (OLR) of 9 kg COD m(-3) d(-1). Results showed that the aerobic granules were growing from 0.1 to 4.1 mm towards the end of the experimental period. The sludge volume index (SVI) was 42 ml g(-1) while the biomass concentration in the reactor grew up to 10.3 g L(-1) represent excellent biomass separation and good settling ability of the granules. During this period, maximum COD, TN and TP removal efficiencies (74%, 73% and 70%, respectively) were observed in the SBR system, confirming high microbial activity in the SBR system.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Esgotos
/
Purificação da Água
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Gado
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Águas Residuárias
Limite:
Animals
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article