Anammox upflow hybrid reactor: Nitrogen removal performance and potential for phosphorus recovery

Ying Song, Jialing Ni, Yan Guo, Kengo Kubota, Wei Kang Qi, Yu You Li

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Article number137580
Publication statusPublished - 2023 Feb


  • Anammox
  • Candidatus kuenenia
  • Hydroxyapatite (HAP)
  • Phosphorus recovery
  • Upflow hybrid reactor

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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