Enrichment of Ca. Jettenia in sequencing batch reactors operated with low nitrogen loading rate and high influent nitrogen concentration

Hoang Phuc Trinh, Sang Hoon Lee, Na Kyung Kim, Hyeokjun Yoon, Garam Jeong, You Jung Jung, Moonsuk Hur, Byoung Hee Lee, Hee Deung Park

Research output: Contribution to journalArticlepeer-review

Abstract

To apply the anammox processes into the mainstream of domestic wastewater treatment plants, two laboratory-scale sequence batch reactors have been developed and used with two different activated sludges seeded in each sequence batch reactors with gradually increases influent total nitrogen concentrations under low nitrogen loading rates. During 320 days of operation, both sequence batch reactors showed high specific anammox activity (0.68 – 0.75 kgN kg−1VSS d−1) and a nitrogen removal efficiency of 97.50%. To monitor changes in microbial community dynamics during enrichment, high-throughput sequencing analysis was performed. Members taxonomically affiliated with Candidatus Jettenia were markedly enriched and predominant in both sequence batch reactors in response to the increasing influent total nitrogen concentrations. These results suggest that Candidatus Jettenia might be a prominent anammox genus under low nitrogen loading rate with high total nitrogen concentration conditions and could be suitably applied to the mainstream process of domestic wastewater treatment systems.

Original languageEnglish
Article number127079
JournalBioresource technology
Volume352
DOIs
Publication statusPublished - 2022 May

Keywords

  • Anammox
  • Enrichment
  • Jettenia
  • Resilience
  • SBR

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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