In:
Journal of Physics: Conference Series, IOP Publishing, Vol. 2009, No. 1 ( 2021-08-01), p. 012010-
Abstract:
The operation performance of biofilm system is limited by the oligotrophic quality of source water, especially the bioavailable organics. In this study, two lab-scale biofilm reactors (R 1 and R 2 ) feeding different organic carbon sources (OCS) were built up using sediment in drinking water source as bacterial source. Experimental results showed that sediment in biofilm systems enhanced the NH 4 + -N removal performance. Using ethanol as OCS was more beneficial to the removal of NH 4 + -N with ammonia removal efficiency (ARE) of 87.0 ± 5.4%, which was higher and more stable than that of glucose with ARE of 83.9 ± 13.3%. Organic carbon source changed the bacterial structure in biofilm systems. The dominant phyla in biofilm under ethanol condition were Proteobacteria, Bacteroidetes and Firmicutes with relative abundances (RA) of 29.1%, 32.7% and 22.0%, respectively. The dominant phyla in biofilm exposure to glucose was Proteobacteria with an RA of 63.4%. At genus level, Nitrospira, Lachnospiraceae, Arcobacter and Hyphomicrobium were dominant under ethanol condition (R 1 ) with the total relative abundance of 20.5%. Sphaerotilus was the dominant genus under glucose condition (R 2 ) with RA of 33.72%. These dominant bacteria were basically having the ability for the removal of nitrogen and organic matter.
Type of Medium:
Online Resource
ISSN:
1742-6588
,
1742-6596
DOI:
10.1088/1742-6596/2009/1/012010
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
2166409-2
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