The performance of freshwater one-stage partial nitritation/anammox process with the increase of salinity up to 3.0%

Yan Guo, Takumi Sugano, Ying Song, Chenglei Xie, Yujie Chen, Yi Xue, Yu You Li

Research output: Contribution to journalArticle

Abstract

The freshwater anammox-based process would usually experience performance fluctuation and need adoption period when subjected to saline wastewater according to previous studies. In this study, the performance of nitrite-limited freshwater one-stage partial nitritation/anammox (PNA) process subjected to saline wastewater was investigated. The results showed that the nitrite-limited freshwater system could smoothly adapt to the salinity of 0.25%. The stable nitrogen removal could be achieved until the salinity of 2.5%, at which the desirable average NRR of 0.74 ± 0.1 kg/m3/d was achieved. The microbial community analysis showed that during the whole experiment, the main functional microbes were from genus Nitrosomonas and genus Kuenenia, which were through to be the crucial factors for achieving the excellent performance. This study indicates the nitrite-limited strategy is admissible for stabilizing the performance of freshwater one-stage PNA process subjected to saline wastewater in actual application.

Original languageEnglish
Article number123489
JournalBioresource Technology
Volume311
DOIs
Publication statusPublished - 2020 Sep

Keywords

  • Anammox
  • Nitrite-limited
  • One-stage
  • Partial nitritation
  • Salinity

ASJC Scopus subject areas

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

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