Treating the filtrate of mainstream anaerobic membrane bioreactor with the pilot-scale sludge-type one-stage partial nitritation/anammox process operated from 25 to 15 °C

Yan Guo, Eli Hendrik Sanjaya, Chao Rong, Tianjie Wang, Zibin Luo, Hong Chen, Hong Wang, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu You Li

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

At ambient temperature condition, the one-stage partial nitritation/anammox (PNA) process has been successfully adopted to treat the filtrate from the mainstream anaerobic membrane bioreactor (AnMBR). However, there is no investigation of the performance of this process at low-temperature condition. In this study, the nitrogen removal performance of a pilot-scale PNA reactor at the temperature of 15 °C for treating the filtrate of a mainstream AnMBR was investigated. The nitrogen removal rate of 0.09 kg/m3/d and the nitrogen removal efficiency of 37.6% were achieved. The anammox reaction was the rate-limiting step of the nitrogen removal. Nitrogen removal was attributed in part to denitrification activity. The microbial community analysis confirmed that the main functional bacteria comprised of genus Nitrosomonas and genus Kuenenia. In sum, this research demonstrated the applicability of PNA process for mainstream AnMBR filtrate treatment to some extent and enriched the related knowledge.

Original languageEnglish
Article number127062
JournalBioresource Technology
Volume351
DOIs
Publication statusPublished - 2022 May

Keywords

  • Anammox
  • Low temperature
  • Municipal wastewater
  • Nitritation
  • One-stage
  • Pilot-scale

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