| CANON体系中颗粒污泥粒径及C/N比对反应器脱氮性能的影响 |
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| 作者姓名： | 李津青 韩晓宇 黄京 张树军 刘红辉 刘新春 |
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| 作者单位： | 1.中国科学院大学资源与环境学院, 北京 101408;2.北京城市排水集团有限责任公司科技研发中心, 北京 100022 |
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| 基金项目： | 国家科技重大专项（2016ZX05066006-001）资助 |
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| 摘 要： | 采用一体化厌氧氨氧化SBR反应器处理高氨氮废水，研究不同粒径（R1：0.2~0.5mm、R2：0.5~1mm、R3：>1mm）颗粒污泥的脱氮性能及不同C/N比对颗粒污泥系统的影响。实验结果表明：R1、R2、R3的AOB活性依次降低；NOB活性R2最高，其次是R1，最低是R3；厌氧氨氧化菌活性R2最高，其次是R1，最低的是R3。C/N比升高过程中，颗粒形态发生变化，镜检显示中间红色部分减少，外围出现黄色包围圈，总氮去除负荷由0.59kg/（m3 ·d）降到0.34kg/（m3 ·d），总氮去除率由94.75%升到95.07%后降到87.55%。结果表明CANON工艺的C/N比不宜超过1.5。
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| 关 键 词： | 厌氧氨氧化 不同粒径 颗粒污泥 C/N比 |
| 收稿时间： | 2017-10-30 |
| 修稿时间： | 2018-01-10 |
Effects of particle sizes and C/N ratios on the nitrogen removal performance in CANON system |
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| Authors: | LI Jinqing HAN Xiaoyu HUANG Jing ZHANG Shujun LIU Honghui LIU Xinchun |
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| Institution: | 1.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China;2.Research and Development Center of Beijing Drainage Group Corporation, Beijing 100022, China |
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| Abstract: | High ammonia nitrogen wastewater was treated in an integrated anaerobic ammonia oxidation SBR reactor. Effects of particle sizes (R1:0.2-0.5mm,R2:0.5-1mm,R3:>1mm) and C/N ratios on the nitrogen removal from granular sludge were studied. The results showed that the AOB activities of R1, R2 and R3 decreased in turn; R2 had the highest NOB activity, followed by R1, and R3 had the lowest; and R2 had the highest activity of ANAMMOX, followed by R1, and R3 had the lowest. When the C/N ratio increased, the granular sludge morphology changed obviously, and microscopic examination showed that the middle red part gradually reduced and peripheral yellow encirclement occurred. The total nitrogen removal load reduced from 0.59kg/(m3·d) to 0.34kg/(m3·d), and the total nitrogen removal rate increased from 94.75% to 95.07% and then decreased to 87.55%. The results showed that the C/N ratio should not exceed 1.5 in CANON process. |
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| Keywords: | anaerobic ammonia oxidation granule sizes granules C/N ratio |
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