Strategies for improving nitrogen removal under high sludge loading rate in an anammox membrane bioreactor operated at 25 °C

Shaohua Sun, Ying Song, Xiao Jin Yang, Hanjun Hu, Shangze Wu, Wei kang Qi, Yu You Li

研究成果: Article査読

16 被引用数 (Scopus)

抄録

An anaerobic ammonium oxidation (anammox) membrane bioreactor operated at 25 °C was used to investigate nitrogen removal under different operation conditions, namely, different sludge retention time (SRT) and nitrogen loading rate (NLR). The inhibition processes caused by high substance concentrations and over-loading were able to be circumvented by various adjustment methods. Furthermore, specific anammox activity (SAA) tests were performed to evaluate the effects of ammonium and nitrite on the anammox sludge. Over an SRT of 500 d, the content of volatile suspended solids (VSS) gradually increased from 125 mg/L to 5590 mg/L, and the maximum nitrogen removal rate (NRR) reached 1.18 kg N/m3/d. When the SRT was decreased to 50 d, the sludge concentration declined gradually, which necessitated an increase in the sludge loading rate (SLR), and the maximum sludge nitrogen removal rate (SNRR) of 0.67 g total nitrogen (TN)/g VSS/d was achieved at this time.

本文言語English
ページ(範囲)106-114
ページ数9
ジャーナルChemical Engineering Science
183
DOI
出版ステータスPublished - 2018 6 29

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学

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