期刊
BIORESOURCE TECHNOLOGY
卷 239, 期 -, 页码 66-73出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.04.125
关键词
Ammonium removal; Arthrobacter arilaitensis; Nitrite accumulation; Simultaneous nitrification and denitrification
资金
- National Natural Science Foundation of China - China [41371275]
- National-level International S&T Cooperation Base of China: Water Environment Monitoring and Simulation in the Three Gorges Reservoir
The ability of Arthrobacter arilaitensis Y-10 for nitrogen removal from simulated wastewater was studied. Results showed that ammonium was the best inorganic nitrogen for strain Y-10' s cell growth, which could also promote nitrate reduction. Approximately 100.0% of ammonium was removed in the nitrogen removal experiments. The nitrate removal efficiency was 73.3% with nitrate as sole nitrogen source, and then the nitrate efficiency was increased to 85.3% and 100.0% with ammonium and nitrate (both about 5 or 100 mg/L) as the mixed nitrogen sources. Nitrite accumulation was observed in presence of ammonium and nitrate. When the concentration of sole nitrite nitrogen was 10.31 mg/L, the nitrite removal efficiency was 100.0%. Neither ammonium nor nitrate was accumulated during the whole experimental process. All experimental results indicated that A. arilaitensis Y-10 could remove ammonium, nitrate and nitrite at 15 C-omicron from wastewater, and could also perform simultaneous nitrification and denitrification under aerobic condition. (C) 2017 Published by Elsevier Ltd.
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