Reason and control strategy for denitrification and anammox sludge flotation in nitrogen removal process: Mechanisms, strategies and perspectives.
Environ Res
; 258: 119456, 2024 Oct 01.
Article
en En
| MEDLINE
| ID: mdl-38906445
ABSTRACT
Anaerobic biological treatment technology, especially denitrification and anaerobic ammonia oxidation (anammox) technology as mainstream process, played dominant role in the field of biological wastewater treatment. However, the above process was prone to sludge floating during high load operation and thereby affecting the efficient and stable operation of the system. Excessive production of extracellular polymeric substance (EPS) was considered to be the main reason for anaerobic granular sludge flotation, but the summaries in this area were not comprehensive enough. In this review, the potential mechanisms of denitrification and anammox sludge floatation were discussed from the perspective of granular sludge structural characteristics, nutrient transfer, and microbial flora change respectively, and the corresponding control strategies were also summarized. Finally, this paper indicated that future research on sludge flotation should focus on reducing the negative effects of EPS in sludge particles.
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Bases de datos:
MEDLINE
Asunto principal:
Aguas del Alcantarillado
/
Eliminación de Residuos Líquidos
/
Desnitrificación
/
Nitrógeno
Idioma:
En
Revista:
Environ Res
Año:
2024
Tipo del documento:
Article