| 多因素对ANAMMOX菌利用零价铁还原硝酸盐过程影响 |
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| 引用本文： | 宋歌,张文静,毕贞,黄勇,董石语. 多因素对ANAMMOX菌利用零价铁还原硝酸盐过程影响[J]. 中国环境科学, 2019, 39(11): 4666-4672 |
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| 作者姓名： | 宋歌 张文静 毕贞 黄勇 董石语 |
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| 作者单位： | 1. 苏州科技大学环境科学与工程学院, 江苏 苏州 215009;2. 城市生活污水资源化利用技术国家地方联合工程实验室, 江苏 苏州 215009;3. 苏州科技大学环境生物技术研究所, 江苏 苏州 215009 |
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| 基金项目： | 国家自然科学基金资助项目（21607110）；城市生活污水资源化利用技术国家地方联合工程实验室（苏州科技大学）开放课题（2018KF02）；苏州科技大学大学生科研立项基金资助项目（无项目编号） |
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| 摘 要： | 以厌氧氨氧化（ANAMMOX）菌利用零价铁还原硝酸盐体系为研究对象，采用单因素调控法结合中心复合法（CCD）系统研究铁形态、进水pH值、温度、Fe/N等对该体系中硝酸盐去除率的影响.结果表明，在相同的反应条件下，投加纳米铁时ANAMMOX体系中硝酸盐的去除效果最优；反应温度和Fe/N对体系中硝酸盐去除率影响十分显著，而进水pH值影响较弱.利用CCD法得出模型预测的最佳反应条件为：进水pH值为4.00，反应温度为35.00℃，Fe/N为38.23，预测的硝酸盐去除率为94.70%，实际实验得出的硝酸盐去除率为88.99%.
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| 关 键 词： | 厌氧氨氧化(ANAMMOX) 硝酸盐 零价铁 中心复合(CCD)法 |
| 收稿时间： | 2019-04-08 |
Effects of multiple factors on the process of ANAMMOX bacteria strengthening nitrate reduction by zero-valent iron |
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| SONG Ge,ZHANG Wen-jing,BI Zhen,HUANG Yong,DONG Shi-yu. Effects of multiple factors on the process of ANAMMOX bacteria strengthening nitrate reduction by zero-valent iron[J]. China Environmental Science, 2019, 39(11): 4666-4672 |
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| Authors: | SONG Ge ZHANG Wen-jing BI Zhen HUANG Yong DONG Shi-yu |
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| Affiliation: | 1. School of Environment Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;2. National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China;3. Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | Effects of iron form, pH, temperature and Fe/N on the process of ANAMMOX bacteria strengthening nitrate reduction by zero-valent iron (Fe0) were studied by single factor control experiment combined with Central Composite Design (CCD) methodology. The results demonstrated that the test with nano-Fe0 addition showed the highest nitrate removal efficiency compared with the iron powder and iron filings addition. According to the CCD analysis, the temperature and Fe/N had significant effects on the nitrate removal efficiency, while the effect of pH was weak. The optimum reaction conditions predicted based on CCD analysis were initial pH of 4.00, temperature of 35.00℃, and Fe/N of 38.23. The predictive nitrate removal efficiency was 94.70%, which was closed to the actual experimental value of 88.99%. |
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| Keywords: | ANAMMOX nitrate zero-valent iron (Fe0) Central Composite design (CCD) methodology |
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