Feasibility studies on the treatment of dairy wastewaters with upflow anaerobic sludge blanket reactors.
Bioresour Technol
; 93(2): 209-12, 2004 Jun.
Article
en En
| MEDLINE
| ID: mdl-15051084
ABSTRACT
The feasibility of using upflow anaerobic sludge blanket (UASB) reactors for the treatment of dairy wastewaters was explored. Two types of UASBs were used--one operating on anaerobic sludge granules developed by us from digested cowdung slurry (DCDS) and the other on the granules obtained from the reactors of M/s EID Parry treating sugar industry wastewaters. The reactors were operated at HRT of 3 and 12 h and on COD loading rates ranging from 2.4 kg per m3 of digester volume, per day to 13.5 kg m(-3) d(-1). At the 3 h HRT, the maximum COD reduction in the DCDS-seeded and the industrial sludge-seeded reactors was 95.6% and 96.3%, respectively, better than at 12 h HRT (90% and 92%, respectively). In both the reactors, the maximum, the second best, and the third best COD reduction occurred at the loading rates of 10.8, 8.6 and 7.2 kg m3 d(-1), respectively. At loading rates higher than 10.8 kg, the reactor performance dropped precipitously. Whereas in the first few months the reactors operating on sludge from EID Parry achieved better biodegradation of the waste, compared to the reactors operated on DCDS, the performance of the latter gradually improved and matched with the performance of the former.
Buscar en Google
Bases de datos:
MEDLINE
Asunto principal:
Aguas del Alcantarillado
/
Bacterias Anaerobias
/
Eliminación de Residuos Líquidos
/
Reactores Biológicos
/
Industria Lechera
Idioma:
En
Revista:
Bioresour Technol
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2004
Tipo del documento:
Article
País de afiliación:
India