| Author Name | Affiliation | | BAO Rui-ling | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China | | YU Shui-li | 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 | | ZUO Xing-tao | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China | | Wang Juan | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China |
|
| Abstract: |
| To investigate the shut-cut nitrification characteristics of aerobic granule,an aerobic granular sequencing batch airlift reactor(AG-SBAR) was carried out with mixed carbon sources of sodium acetate and glucose at 10±1 ℃.Results indicated that ammonia oxidizing bacteria was accumulated inside the aerobic granules 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 nitrate 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 adjustment 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. |
| Key words: aerobic granule low temperature nitrite accumulation |
| DOI：10.11916/j.issn.1005-9113.2009.04.023 |
| Clc Number:X703 |
| Fund: |
