TY - JOUR
T1 - Strategies for improving nitrogen removal under high sludge loading rate in an anammox membrane bioreactor operated at 25 °C
AU - Sun, Shaohua
AU - Song, Ying
AU - Yang, Xiao Jin
AU - Hu, Hanjun
AU - Wu, Shangze
AU - Qi, Wei kang
AU - Li, Yu You
N1 - Funding Information:
This project was supported by BUCT – China Fund for Disciplines Construction and Development (Project No. ZY1602 ).
Funding Information:
This project was supported by BUCT – China Fund for Disciplines Construction and Development (Project No. ZY1602).
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/6/29
Y1 - 2018/6/29
N2 - 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.
AB - 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.
KW - Anaerobic ammonium oxidation
KW - High sludge loading rate
KW - Membrane bioreactor
KW - Nitrogen removal
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U2 - 10.1016/j.ces.2018.03.011
DO - 10.1016/j.ces.2018.03.011
M3 - Article
AN - SCOPUS:85043398781
SN - 0009-2509
VL - 183
SP - 106
EP - 114
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -