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Details

Autor(en) / Beteiligte
Titel
Fast start-up of Anammox process with appropriate ferrous iron concentration
Ist Teil von
  • Bioresource technology, 2014-10, Vol.170, p.506-512
Ort / Verlag
Kidlington: Elsevier Ltd
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
  • •The start-up time of Anammox process could be shortened to 50days with 0.09mM Fe2+.•An increase of heme c content was the key for fast start-up of Anammox process.•The hydrazine dehydrogenase activity is highly relevant to increasing Fe2+ dosage. In this study, three upflow column reactors were compared for anaerobic ammonium oxidation (Anammox) process start-up time with different ferrous iron concentration in feeding. Continuous experiments indicated that the start-up time of Anammox process could be shortened from 70 to 58d in R2 (0.06mM Fe2+) and 50d in R3 (0.09mM Fe2+). The Anammox activity appeared after 16days operation in R3. Quantitative PCR (q-PCR) analysis demonstrated a significant increase in quantity of Anammox bacteria in R3 compared with the other two reactors during entire operation. At the Fe(II) concentration of 0.09mM, the heme c levels inside Anammox cell and hydrazine dehydrogenase (HDH) activity increased dramatically, which could be the trigger of fast Anammox start-up.

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