Denitrification performance and bacterial flora analysis of immobilized denitrification filler in industrial wastewater.
Sci Total Environ
; 764: 142837, 2021 Apr 10.
Article
en En
| MEDLINE
| ID: mdl-33138990
ABSTRACT
The study aimed at evaluating the nitrogen removal performance of the immobilized denitrification filler, and the influence of shock loading on the high-rate denitrification process. A pilot scale reactor was operated for treatment of aniline production wastewater. The nitrogen removal activity significantly increased in the continuous feed experiments, reaching 5.23 kg N m-3 day-1 on day 31 (30 °C) at Hydraulic Retention Time (HRT) = 10 h. In the impact experiment, the denitrification filler was inhibited by Free Nitrite Acid (FNA) when the shock load flowed 1.5 times into the bioreactor and recovered after the load was restored for 20 h. The high-throughput results demonstrated that the dominant position of the denitrifying bacteria further enhanced in a micro toxic and high-salinity environment, providing a basis for the dominance of the composite denitrifying bacteria and the efficacy of the immobilization technology.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Desnitrificación
/
Aguas Residuales
Idioma:
En
Revista:
Sci Total Environ
Año:
2021
Tipo del documento:
Article
País de afiliación:
China