首页|Shut-cut nitrification characteristics of aerobic granule in a sequencing batch airlift reactor at low temperature

Shut-cut nitrification characteristics of aerobic granule in a sequencing batch airlift reactor at low temperature

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To investigate the shut-cut nitrification characteristics of aerobic granule, an aerobic granular se-quencing batch airlift reactor (AG-SBAR) was carried out with mixed carbon sources of sodium acetate and glu-cose at 10± 1℃. Results indicated that ammonia oxidizing bacteria was accumulated inside the aerobic gran-ules and the reactor performed stably with shut-cut nitrification for a long term at low temperature. During the stable operation period, the effluent ammonia nitrogen concentration was maintained at 13.6 mg/L without ni-trate and nitrite when the COD/N ratio was 20: 1. However, the effluent concentration of ammonia nitrogen was below 0. 5 mg/L with effluent nitrosation ratio of 96. 7% on average when the COD/N ratio was reduced to 15:1 and 10: 1. And the effluent phosphorus concentration was less than 0. 4 mg/L during the stable period with the sludge retention time of 30 d. The phosphorus removal efficiency was not strongly influenced by the adjust-ment of COD/N ratio in this experiment. The removal efficiencies for COD, NH4+-N and PO43--P were 91.3%-94. 6%, 97.9%-99. 7% and 97. 1%-99. 5%, respectively.

aerobic granulelow temperaturenitrite accumulation

BAO Rui-ling、YU Shui-li、ZUO Xing-tao、WANG Juan

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State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China

State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China

National High Technology Research anti Development Program of ChinaKey Projects in National Science & Technology Pillar Program of ChinaFoundation for Innovative Research Gmups of the National Natural Science Foundation of ChinaHeilungjiang Province Key Scientific and Technological Project

2008AAO6Z3042006BAJ08B0950821002GB06C20403

2009

哈尔滨工业大学学报(英文版)
哈尔滨工业大学

哈尔滨工业大学学报(英文版)

EI
影响因子：0.238
ISSN：1005-9113
年,卷(期)：2009.16(4)
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