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Sulfidation forwarding high-strength Anammox process using nitrate as electron acceptor via thiosulfate-driven nitrate denitratation
- Source :
- Bioresource Technology. 344:126335
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- A single up-flow thiosulfate-driven nitrate denitratation coupled with the sulfurized Anammox (TDSA) with the core–shell structure (S0@ Anammox granules) provided a chemical/energy-saving way for the removal of high-content ammonium with nitrate as electron acceptor. Approximately 83.66% total nitrogen removal efficiency (TNRE) could be achieved by the sulfurized Anammox encrusted by S0/Sn2− at a high loading rate (2.6 kg-N/(m3·d)) via resisting high concentration of free ammonia (FA) (22.35 mg/L), mainly through S2O32−, S0/Sn2− -driven partial denitrification-Anammox (PDN-Anammox) process. Moreover, S0/Sn2−-PDN-Anammox was largely restricted when intermittently aerated, but still resulting in 74.47% TNRE due to the partial nitrification-Anammox (PN-Anammox). The sequencing analysis revealed that Anammox bacterium (Candidatus_Kuenenia) and sulfur-oxidizing bacterium (Thiobacillus) coexisted, in which Anammox process occurred mainly via NO instead of NH2OH. This study provided a new perspective for high concentration nitrogen wastewater removal in engineering applications.
- Subjects :
- Environmental Engineering
Nitrogen
ved/biology.organism_classification_rank.species
Thiosulfates
chemistry.chemical_element
Electrons
Bioengineering
Wastewater
Thiobacillus
Anaerobic Ammonia Oxidation
chemistry.chemical_compound
Ammonia
Bioreactors
Nitrate
Ammonium Compounds
Ammonium
Waste Management and Disposal
chemistry.chemical_classification
Thiosulfate
Nitrates
Renewable Energy, Sustainability and the Environment
ved/biology
General Medicine
Electron acceptor
chemistry
Anammox
Denitrification
Oxidation-Reduction
Nuclear chemistry
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 344
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....f4a56f714aa5c6215c9df0a8532defd2