Application of sequential expanded granular sludge bed reactors for biodegradation of acetate, benzoate, terephtalate and p-toluate in purified terephtalic acid production wastewater.
Environ Technol
; 37(9): 1141-50, 2016.
Article
en En
| MEDLINE
| ID: mdl-26513246
ABSTRACT
The anaerobic degradation of four major constituents from purified terephtalic acid production wastewater in sequential two expanded granular sludge bed (EGSB) reactors was studied. The performance of the system was evaluated in terms of chemical oxygen demand (COD) removal efficiencies, methane production, stability, granular sludge adaptability as well as reversion of bacterial inhibition. With volumetric loading rates of 1.9-25â
kg-CODâ
m(-3)â
d(-1) and terephtalate and p-toluate of 584-821â
mgâ
L(-1), average removal efficiencies of 97.6% and 75.2% were achieved in the EGSB reactors, respectively. In these conditions, gas production reached a total methane production rate of 0.33â
Lâ
g-COD(-1) in the two-stage EGSB reactor system. The disturbance of the EGSB reactors was observed at a feed concentration above around 6.9â
g-CODâ
L(-1) because of higher influent COD concentration compared to other experiments.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ácidos Ftálicos
/
Aguas del Alcantarillado
/
Contaminantes Químicos del Agua
/
Benzoatos
/
Eliminación de Residuos Líquidos
/
Reactores Biológicos
/
Acetatos
Idioma:
En
Revista:
Environ Technol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2016
Tipo del documento:
Article