Book chapter
The Start-up of Mainstream Anammox Process Is Limited Only by Nitrite Supply
In this study, we investigated start-up of an Anammox bioprocess from a secondary activated sludge seed fed primary effluent from a domestic used water reclamation plant (WRP). To test the hypothesis that an anammox-enriched sludge could still be achieved under such conditions given enough nitrite and ammonium, nitrite was supplemented at a molar ratio of 2:1 to ammonium.
Anammox activity was observed within 50 d of operation and the relative abundance of Anammox bacteria increased from <0.1% gradually up to 4% after 100 d of operation, concomitant with complete ammonium removal. Despite consumption of chemical oxygen demand (COD) by heterotrophic denitrifiers, the Anammox biomass continued to accumulate up to 20% of relative abundance, contributing to biofilm and granule formation in the reactor.
Thus, a high influent COD concentration is not inhibitory to the start-up of an Anammox system as long as sufficient nitrite is provided.
Language: | English |
---|---|
Publisher: | Springer International Publishing |
Year: | 2017 |
Pages: | 18-21 |
Series: | Lecture Notes in Civil Engineering |
Journal subtitle: | Ficwtm 2017 |
ISBN: | 3319584200 , 3319584219 , 9783319584201 and 9783319584218 |
Types: | Book chapter |
DOI: | 10.1007/978-3-319-58421-8_3 |