| 问歇曝气周期对低C/N比污水生物脱氮的影响 |
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| 引用本文： | 金春姬,佘宗莲,高京淑,成乐昌,金秀生.问歇曝气周期对低C/N比污水生物脱氮的影响[J].环境污染与防治,2003,25(5):257-258. |
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| 作者姓名： | 金春姬 佘宗莲 高京淑 成乐昌 金秀生 |
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| 作者单位： | 1. 中国海洋大学环境科学与工程学院,青岛,266003
2. 韩国东亚大学校地球环境工学部,韩国釜山,604-714 |
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| 基金项目： | 国家自然科学基金资助项目(40272108);韩国东亚奖学财团资助项目 |
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| 摘 要： | 研究了间歇曝气生物脱氮工艺中,曝气周期和污水的c/N比对脱氮效率的影响,以及氧化还原电位(ORP)变化规律.中试试验结果表明,TN污泥负荷为0.05 kg/(kg MLVSS.d)时,间歇曝气系统的硝化反应所需曝气时间与总反应时间比至少要在0.5以上,一周期内搅拌时间不宜超过1 h;反硝化过程中难以找到ORP曲线突变点,因此,在低c/N比污水生物脱氮中ORP难以作为工程控制参数;由于原水的碳氮比太低,TN去除率只有35%～40%左右,为提高脱氮效率有必要投入外加碳源.
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| 关 键 词： | 间歇曝气周期 生物脱氮 低C/N比 |
Effect of intermittent aeration cycle on biological nitrogen removal of wastewater with low C/N ratio |
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| Jin Chunji,She Zonglian. College of Environmental Science and Engineering,China Ocean University,Qingdao.Effect of intermittent aeration cycle on biological nitrogen removal of wastewater with low C/N ratio[J].Environmental Pollution & Control,2003,25(5):257-258. |
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| Authors: | Jin Chunji She Zonglian College of Environmental Science and Engineering China Ocean University Qingdao |
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| Institution: | Jin Chunji,She Zonglian. College of Environmental Science and Engineering,China Ocean University,Qingdao 266003 |
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| Abstract: | The effects of intermittent aeration cycle, inlet C/N ratio on biological nitrogen removal efficiency and variation tendency of oxidation\|reduction potential (ORP) were studied. The results showed that a half time was needed in a intermittent aeration cycle to achieve sufficient nitrification, and the agitation time should be less than one hour in a cycle. Due to too low C/N ratio in inlet wastewater, the ORP bending\|point didn't appear in denitrification period and the TN removal efficiency was lower than 40%, so in this case, ORP was couldn't apply as process control parameter and it was necessary to add external carbon to improve nitrogen removal efficiency. |
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| Keywords: | Intermittent aeration cycle Biological nitrogen removal Low C/N ratio |
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