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Partial nitrification in an upflow biological aerated filter by O2 limitation |
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| Authors: | So-Hyun Joo Dong-Jin Kim Ik-Keun Yoo Kyungmoon Park Gi-Cheol Cha |
| Institution: | (1) Department of Environmental Science, Hallym University, Chunchon, Kangwon, 200-702, Korea;(2) R&D Technology Center, SK Engineering & Construction Ltd., Korea;(3) Chemicals & Biotechnology Division, Ministry of Commerce, Industries & Energy, Korea;(4) Department of Environmental Science and Technology, Yonsei University, Korea |
| Abstract: | A laboratory scale upflow biological aerated filter (BAF) packed with a porous expanded polyurethane medium was developed to nitrify ammonium to nitrite selectively. Greater than 95% removal of ammonium was achieved up to 2 kg NH4 +-N m–3 d. NO2 –-N was accumulated up to 60% of the total (NO2 – + NO3 –)-N when oxygen was limited. |
| Keywords: | biological aerated filter nitrite accumulation oxygen limitation partial nitrification porous media |
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