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Description
Anaerobic ammonia-oxidizing bacteria have a more comprehensive metabolism than
expected - there may be other electron acceptors that oxidize ammonium nitrogen under anaerobic
conditions, in addition to the well-known nitrite nitrogen, one of which is sulfate in the sulfammox
process. Sulfate-containing compounds are part of the medium for the anammox process, but their
concentrations are not particularly high (0.2 g MgSO4 ∙ 7H2O/dm3 and 0.00625 g FeSO4/dm3). They
can react to some extent with influent ammonium nitrogen. In this work, tests were carried out in
two sequencing batch reactors with granular sludge. The first reactor (R1) operated in a 6 hour cycle,
and the concentration of the inflowing sulfate was kept at 44 mg/dm3∙d. The second reactor (R2) was
operated until the 36th day in a 6 hour cycle; the influencing concentration was 180 mg SO42−/dm3∙d
from the 37th to 64th day in a 3 hour cycle, with an influencing concentration of 360 mg SO42−/dm3∙d;
and from the 65th to 90th day, the reactor was operated again in a 6 hour cycle with an influencing
concentration of 180 mg SO42−/dm3∙d. Along with the increased share of sulfate, both the ammonium
utilization rate and specific anammox activity showed an increasing trend. As soon as the sulfate
dosage was reduced, the ammonium utilization rate and specific anammox activity values dropped.
Therefore, it can be concluded that sulfate-containing compounds contribute to the efficiency and
rate of the anammox process.
Dataset file
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.Example script for calculation:
https://github.com/antespi/s3md5
File details
- License:
-
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CC BYAttribution - Raw data:
- Data contained in dataset was not processed.
Details
- Year of publication:
- 2021
- Verification date:
- 2021-06-29
- Dataset language:
- English
- Fields of science:
-
- environmental engineering, mining and energy (Engineering and Technology)
- DOI:
- DOI ID 10.34808/knh9-wj44 open in new tab
- Funding:
- Verified by:
- Gdańsk University of Technology
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