The performance of an anaerobic ammonium oxidation upflow anaerobic sludge blanket reactor during natural periodic temperature variations

Ming Cong Li, Ying Song, Wei Shen, Cong Wang, Wei Kang Qi, Yongzhen Peng, Yu You Li

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

An anaerobic ammonium oxidation-upflow anaerobic sludge blanket (anammox-UASB) reactor was operated without temperature control during the four seasons and was therefore subjected to natural periodic temperature variations between 9 and 28 ℃. The anammox reactor had a high nitrogen removal ability at intermediate and low temperatures. The total nitrogen (TN) concentration of the influent increased from 200 to 1200 mg/L, the nitrogen removal efficiency was maintained at 90%, and the nitrogen removal rate (NRR) increased to 9.15 ± 0.35 kg N/m3/d. The enrichment of anammox bacteria in the UASB granular sludge reached 53.8%, and the dominant bacteria changed from Candidatus Brocadia to Candidatus Kuenenia after several seasons of cultivation. Dynamics analysis revealed that the maximum reaction rate of the anammox-UASB sludge was 62.5 kg N/m3/d, reflecting the high potential nitrogen removal ability of the reactor.

Original languageEnglish
Article number122039
JournalBioresource Technology
Volume293
DOIs
Publication statusPublished - 2019 Dec

Keywords

  • Anammox
  • Microbial evolution
  • Periodic temperature change
  • UASB

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'The performance of an anaerobic ammonium oxidation upflow anaerobic sludge blanket reactor during natural periodic temperature variations'. Together they form a unique fingerprint.

Cite this