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Mass balance and bacterial characteristics in an in-situ full-scale swine wastewater treatment system occurring anammox process
- Source :
- Bioresource technology. 292
- Publication Year :
- 2019
-
Abstract
- A spontaneous development of full-scale anaerobic ammonium oxidation (anammox) process was seldom reported, and its operational parameters could supply references in actual applications. This engineered case indicated that anammox process was suitable for treating relatively high-strength ammonium and organics wastewater due to niche differentiation of biofilm. Results of isotope labelling showed that anammox contributed approximately 40% to N-loss in aerobic unit, but this value increased to 78.3% in anoxic tank. Mass balance showed that N-removal via anammox and denitrification pathways were 38.1 and 23.9 g m−3 d−1, and anammox rate was 1.6 times higher than denitrifiaction. The wild-type anammox granules had a high purity, with anammox accounting for 92.2%. Candidatus Brocadia was the predominant species. Mixing sludge had a higher oxygen tolerance compared with granules, although the latter had a higher anammox activity under anaerobic conditions. Moreover, physicochemical precipitation on the surface of granules may be related to granulation mechanism.
- Subjects :
- 0106 biological sciences
Environmental Engineering
Denitrification
Nitrogen
Swine
Bioengineering
010501 environmental sciences
Wastewater
01 natural sciences
chemistry.chemical_compound
Granulation
Bioreactors
010608 biotechnology
Ammonium Compounds
Animals
Ammonium
Anaerobiosis
Waste Management and Disposal
0105 earth and related environmental sciences
Sewage
Renewable Energy, Sustainability and the Environment
Chemistry
Biofilm
General Medicine
Anoxic waters
Anammox
Environmental chemistry
Anaerobic exercise
Oxidation-Reduction
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 292
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....f93f73a8571a774193b2cd535e357b52