Journal
BIORESOURCE TECHNOLOGY
Volume 159, Issue -, Pages 404-411Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.02.054
Keywords
Partial nitritation; ANAMMOX; Wastewater treatment; Landfill leachate; Nitrogen removal
Funding
- State Ministry of Science and Technology [2008BAE64B05]
- National Natural Science Foundation [21277052]
- State Key Laboratory of Subtropical Building Science [2011ZB05, 2012ZB06, 2013ZC03, 2014ZB04]
- Department of Science and Technology of Guangdong Province [2007A032500005]
- Department of Guangdong Education and the Science and Technology Bureau [2008A1-D0011]
- Environmental Protection Bureau [201203]
- Natural Science Foundation of Guangdong Province [S2011040005784]
- fundamental research funds for the central universities [2012ZM0042, 2014ZM0085]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
- State Education Ministry
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Long-term performance of a two-stage partial nitritation (PN)-anaerobic ammonium oxidation (ANAMMOX) process treating mature landfill leachate was investigated. Stable partial nitritation performance was achieved in a sequencing batch reactor (SBR) using endpoint pH control, providing an effluent with a ratio of NO2--N/NH4+-N at 1.23 +/- 0.23. High rate nitrogen removal over 4 kg N/m(3)/d was observed in the ANAMMOX reactor in the first three months. However, during long-term operation, the ANAMMOX reactor can only stably operate under nitrogen load of 1 kg N/m(3)/d, with 85 +/- 1% of nitrogen removal. The ammonium oxidizing bacteria (AOB) in the PN-SBR were mainly affiliated to Nitrosomonas sp. IWT514, Nitrosomonas eutropha and Nitrosomonas eutropha, the anaerobic ammonium oxidizing bacteria (AnAOB) in the ANAMMOX reactor were mainly affiliated to Kuenenia stuttgartiensis. (C) 2014 Published by Elsevier Ltd.
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