Nitric oxide for anammox recovery in a nitrite-inhibited deammonification system
| Autor: | Priit Vabamäe, Taavo Tenno, Sergio Rubin, Tero Tuomivirta, Markus Raudkivi, Hannu Fritze, Kristel Kroon, Ergo Rikmann, Toomas Tenno, Ivar Zekker, Anni Mandel, Liis Loorits |
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| Rok vydání: | 2015 |
| Předmět: |
Chromatography
Moving bed biofilm reactor Biofilm General Medicine Nitric Oxide Microbiology Planctomycetales chemistry.chemical_compound Bioreactors Hydroxylamine chemistry Wastewater Anammox Biofilms Ammonium Compounds Environmental Chemistry Sewage treatment Anaerobiosis Nitrite Oxidation-Reduction Waste Management and Disposal Nitrites Water Science and Technology Total suspended solids |
| Zdroj: | Environmental Technology. 36:2477-2487 |
| ISSN: | 1479-487X 0959-3330 |
| DOI: | 10.1080/09593330.2015.1034791 |
| Popis: | The anaerobic ammonium oxidation (anammox) process is widely used for N-rich wastewater treatment. In the current research the deammonification reactor in a reverse order (first anammox, then the nitrifying biofilm cultivation) was started up with a high maximum N removal rate (1.4 g N m(-2) d(-1)) in a moving bed biofilm reactor. Cultivated biofilm total nitrogen removal rates were accelerated the most by anammox intermediate - nitric oxide (optimum 58 mg NO-N L(-1)) addition. Furthermore, NO was added in order to eliminate inhibition caused by nitrite concentrations (50 mg [Formula: see text]) increasing [Formula: see text] (2/1, respectively) along with a higher ratio of [Formula: see text] (0.6/1, respectively) than stoichiometrical for this optimal NO amount added during batch tests. Planctomycetales clone P4 sequences, which was the closest (98% and 99% similarity, respectively) relative to Candidatus Brocadia fulgida sequences quantities increase to 1 × 10(6) anammox gene copies g(-1) total suspended solids to till day 650 were determined by quantitative polymerase chain reaction. |
| Databáze: | OpenAIRE |
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