Journal
BIORESOURCE TECHNOLOGY
Volume 253, Issue -, Pages 130-140Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.01.043
Keywords
Anammox; AAFEB; Process performance; Stoichiometric equations; Heme C; Tolerance ability
Funding
- Japan Society for the Promotion of Science (JSPS)
- China Postdoctoral Science Foundation [2017M610397]
- Grants-in-Aid for Scientific Research [16J02562] Funding Source: KAKEN
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The nitrogen loading rate (NLR) of an anammox attached film expanded bed (AAFEB) reactor was increased from 5.0 to 60.0 gN/L/d. During the stable operational period, the TN removal efficiency maintained at 87.3 +/- 2.5%, and a maximum nitrogen removal rate (NRR) of 44.9 +/- 0.3 gN/L/d was achieved. Overload resulted in the sharp deterioration of reactor performance, the ratio of (Food/Microorganism)/SAA should be maintained at lower than 66 +/- 7% to ensure the stable operation of the AAFEB reactor. New stoichiometric equations for the anammox process under the low NLR condition (5.0 gN/L/d) and the high NLR condition (50.0 gN/L/d) were proposed. The quantitative SAA-cytochrome heme C relationship was established for the first time that providing a simple way for monitoring the reactor performance. Substrate tolerance ability was significantly increased that proving the stability of the AAFEB reactor was continuously enhanced during the stable operational periods.
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