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Feasibility of enhancing the DEnitrifying AMmonium OXidation (DEAMOX) process for nitrogen removal by seeding partial denitrification sludge.
- Source :
-
Chemosphere . Apr2016, Vol. 148, p403-407. 5p. - Publication Year :
- 2016
-
Abstract
- The recently proposed DEnitrifying AMmonium OXidation (DEAMOX) process combined anaerobic ammonia oxidation (ANAMMOX) with denitrification to convert nitrate to nitrite, which was a promising way for treating wastewater containing nitrate and ammonia. This study investigated the feasibility of establishing DEAMOX process by seeding partial denitrification sludge (NO 3 − → NO 2 − ) using sodium acetate as an electron donor in a sequencing batch reactor. Results showed that the DEAMOX process was established successfully and operated stably in 114-days operation. The average effluent total nitrogen concentration was below 5 mg L −1 and TN removal efficiency reached up to 97% at COD/NO 3 − ratio of 3.0 under initial NH 4 + concentration of 25 mg L −1 and NO 3 − of 30 mg L −1 . It suggested that the presence of NO 2 − in the system supplied for ANAMMOX and the relatively long sludge retention time (SRT) for denitrifiers were attributed to commendable coexistence of ANAMMOX and denitrifying bacteria. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00456535
- Volume :
- 148
- Database :
- Academic Search Index
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 112907753
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2015.09.062