| 固定化氨氧化细菌短程硝化稳定性研究 |
| 摘要点击 6449 全文点击 4140 投稿时间：2007-10-10 修订日期：2008-01-24 |
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| 中文关键词 固定化 氨氧化细菌 短程硝化 稳定性 |
| 英文关键词 immobilized ammonia-oxidizing bacteria short-cut nitrification stability |
| DOI |
| 作者 | 单位 | | 李正魁 | 南京大学环境学院, 污染控制与资源化研究国家重点实验室,南京210093 | | 赖鼎东 | 南京大学环境学院, 污染控制与资源化研究国家重点实验室,南京210093 | | 杨竹攸 | 南京大学环境学院, 污染控制与资源化研究国家重点实验室,南京210093 | | 张晓姣 | 南京大学环境学院, 污染控制与资源化研究国家重点实验室,南京210093 | | 李芳捷 | 南京大学环境学院, 污染控制与资源化研究国家重点实验室,南京210093 |
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| 中文摘要 |
| 以高分子聚合物为载体，采用细胞增殖技术固定氨氧化细菌，研究了氨氮负荷、HRT、初始游离氨（FA）和有机物等因素对短程硝化过程稳定性的影响.实验结果表明，当进水氨氮负荷分别为100、 150和200 mg/Ｌ时，出水氨氮浓度均小于10 mg/Ｌ；当进水氨氮浓度为25.8、 51.1和93.3 mg/Ｌ时，分别经历3、 6、 12 h后，出水氨氮浓度低，亚硝化效果好，可以根据进水氨氮浓度的变化，适当地调整系统水力停留时间（HRT）并优化系统的运行；当游离氨（FA）浓度>9 mg/Ｌ时，对氨氧化细菌会产生抑制；低分子有机物的存在对氨氧化细菌的活性具有一定的促进作用，有机物浓度对亚硝化率基本不产生影响，实验过程中在有机物存在的条件下，发生了短程硝化反硝化反应，使得系统总氮减少. |
| 英文摘要 |
| The ammonia-oxidizing bacteria were immobilized by copolymer with cell proliferation technology. The effects of NH+4-N load, HRT, free ammonia(FA) and organic matter on short-cut nitrification process were studied. The results showed that when influent NH+4-N load were 100 mg/Ｌ， 150 mg/Ｌ and 200 mg/Ｌ respectively, effluent NH+4-N concentration was less than 10 mg/Ｌ. When the system run for 3 h, 6 h and 12 h, corresponding to influent NH+4-N concentration of 25.8 mg/Ｌ, 51.1 mg/Ｌ and 93.3 mg/Ｌ respectively, NH+4-N concentration was low in effluent with high short-cut nitrification efficiency. The HRT could be adjusted to optimize the system operation with variation of influent NH+4-N concentration. The results also indicated that the ammonia-oxidizing bacteria were restrained while free ammonia concentration was over 9 mg/Ｌ. The activity of the ammonia-oxidizing bacteria could be enhanced under existence of low-molecular-weight organic compounds, but the short-cut nitrification efficiency was little affected. In addition, the short-cut nitrification and denitrification could be realized with existence of organic compounds during the experiment. |
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