Performance and fouling characteristics of a submerged anaerobic membrane bioreactor for kraft evaporator condensate treatment.
Environ Technol
; 31(5): 511-21, 2010 Apr 14.
Article
en En
| MEDLINE
| ID: mdl-20480826
ABSTRACT
Submerged anaerobic membrane bioreactor (SAnMBR) technology was studied for kraft evaporator condensate treatment at 37 +/- 1 degrees C over a period of 9 months. Under tested organic loading rates of 1-24 kg COD/m3/day, a chemical oxygen demand (COD) removal efficiency of 93-99% was achieved with a methane production rate of 0.35 +/- 0.05 L methane/g COD removed and a methane content of 80-90% in produced biogas. Bubbling of recycled biogas was effective for in-situ membrane cleaning, depending on the biogas sparging rate used. The membrane critical flux increased and the membrane fouling rate decreased with an increase in the biogas sparging rate. The scanning electron microscopy images showed membrane pore clogging was not significant and sludge cake formation on the membrane surface was the dominant mechanism of membrane fouling. The results suggest that the SAnMBR is a promising technology for energy recovery from kraft evaporator condensate.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Eliminación de Residuos Líquidos
/
Purificación del Agua
/
Reactores Biológicos
Idioma:
En
Revista:
Environ Technol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Canadá