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Anammox transited from denitrification in upflow biofilm reactor.
- Source :
- Journal of Environmental Sciences (IOS Press); Nov2004, Vol. 16 Issue 6, p1041-1045, 5p
- Publication Year :
- 2004
-
Abstract
- Anammox was successfully transited from heterotrophic denitrification and autotrophic denitrification in two upflow biofilm reactors, respectively. The results showed that the volumetric loading rate and nitrogen removal efficiency in the reactor transited from heterotrophic denitrification were higher than that in its counterpart. When the hydraulic retention time was 12 h or so, the total nitrogen loading rate was about 0.609 kg N/(m^3·d), and the effluent ammonia and nitrite concentrations were less than 8.5 mg/L and 2.5 mg/L, respectively. The upflow anammox biofilm reactor was capable of keeping and accumulating the slow-growing bacteria efficiently. During operation of the reactor, the biomass color was gradually turned from brownish to red, and the ratio of ammonia consumption, nitrite consumption and nitrate production approached the theoretical one. These changes could be used as an indicator for working state of the reactor. [ABSTRACT FROM AUTHOR]
- Subjects :
- DENITRIFICATION
BIOFILMS
NITROGEN
AMMONIA
BIOMASS
CHEMICAL reduction
Subjects
Details
- Language :
- English
- ISSN :
- 10010742
- Volume :
- 16
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Journal of Environmental Sciences (IOS Press)
- Publication Type :
- Academic Journal
- Accession number :
- 17809456