TY - JOUR
T1 - Anammox upflow hybrid reactor
T2 - Nitrogen removal performance and potential for phosphorus recovery
AU - Song, Ying
AU - Ni, Jialing
AU - Guo, Yan
AU - Kubota, Kengo
AU - Qi, Wei Kang
AU - Li, Yu You
N1 - Funding Information:
This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant-in-Aid for Scientific Research (A) No. 22H00566 . The first author also gratefully acknowledges International Joint Graduate Program in Resilience and Safety Studies (GP-RSS).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/2
Y1 - 2023/2
N2 - Echoing to the call of recovering high-value-added chemicals from wastewater and achieving carbon-neutral operation in wastewater treatment, an anammox upflow hybrid reactor was successfully applied for nitrogen removal, and the potential for phosphorus recovery was put forward. Moreover, the spatial pattern of removal capacities, and distribution of biomass and HAP precipitates were recognized and demonstrated as height-oriented. The intensity of HAP precipitates was highly consistent with the amount of anammox biomass and the relative abundance of the Candidatus Kuenenia, indicating that HAP formation was encouraged by the anammox reaction itself and heterogeneous nucleation induced by organic matters (proteins and polysaccharides). The fixed bed also played an important role in immobilizing the anammox biomass, secreted organic matrix, and HAP precipitates. This finding also provoked the thought that in the anammox process, HAP precipitation was more achievable, effective and practicable using the fixed-carrier system.
AB - Echoing to the call of recovering high-value-added chemicals from wastewater and achieving carbon-neutral operation in wastewater treatment, an anammox upflow hybrid reactor was successfully applied for nitrogen removal, and the potential for phosphorus recovery was put forward. Moreover, the spatial pattern of removal capacities, and distribution of biomass and HAP precipitates were recognized and demonstrated as height-oriented. The intensity of HAP precipitates was highly consistent with the amount of anammox biomass and the relative abundance of the Candidatus Kuenenia, indicating that HAP formation was encouraged by the anammox reaction itself and heterogeneous nucleation induced by organic matters (proteins and polysaccharides). The fixed bed also played an important role in immobilizing the anammox biomass, secreted organic matrix, and HAP precipitates. This finding also provoked the thought that in the anammox process, HAP precipitation was more achievable, effective and practicable using the fixed-carrier system.
KW - Anammox
KW - Candidatus kuenenia
KW - Hydroxyapatite (HAP)
KW - Phosphorus recovery
KW - Upflow hybrid reactor
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U2 - 10.1016/j.chemosphere.2022.137580
DO - 10.1016/j.chemosphere.2022.137580
M3 - Article
C2 - 36529167
AN - SCOPUS:85144456142
SN - 0045-6535
VL - 313
JO - Chemosphere
JF - Chemosphere
M1 - 137580
ER -
