| 生物活性炭对不同C/N比废水同步硝化反硝化脱氮效果的影响 |
| 摘要点击 3302 全文点击 1462 投稿时间：2016-01-05 修订日期：2016-06-20 |
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| 中文关键词 生物活性炭 C/N比 同步硝化反硝化 溶解氧 生物脱氮 |
| 英文关键词 biological actived carbon (BAC) C/N simultaneous nitrification and denitrification (SND) DO biological nitrogen removal |
| 作者 | 单位 | E-mail | | 崔延瑞 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | yanruicui@yeah.net | | 邱鑫 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | | | 张庆荣 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | | | 王琦 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | | | 吴青 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | | | 孙剑辉 | 河南师范大学环境学院, 黄淮水环境与污染防治教育部重点实验室, 河南省环境污染控制重点实验室, 新乡 453007 | |
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| 中文摘要 |
| 以连续运行的生物活性炭（biological actived carbon，BAC）填料反应器为研究对象，与序批式活性污泥反应器（sequencing batch reactor，SBR）对比，考察了BAC的加入对不同C/N比废水同步硝化反硝化（simultaneous nitrification and denitrification，SND）脱氮效果的影响.在室温（15~27℃），初始溶解氧（dissolved oxygen，DO）质量浓度2~3 mg·L-1条件下，以甲醇做外加碳源，分别设置进水C/N比为3、5、8和10运行120个周期，比较两反应器的脱氮效果及稳定性.结果表明，C/N比由3依次升至5和8时BAC填料反应器脱氮效果优于SBR，TN平均去除率分别达44.88%、58.07%和66.64%.继续增大进水C/N至10，SBR发生污泥膨胀，而BAC反应器仍能保持63.65%的TN去除率.实验证明BAC在单一反应器内创造了多样的溶解氧环境，为SND创造了适宜的条件.BAC的加入减小了过量有机碳对硝化系统带来的影响，扩大了反应器的C/N比适用范围，增加了运行的稳定性，提高了有机物的脱氮容量，为高效脱氮提供了可能. |
| 英文摘要 |
| Influence of biological activated carbon (BAC) on simultaneous nitrification and denitrification (SND) in inflow with different C/N ratios was investigated with continuous operation of BAC reactor and SBR. Methanol was added as carbon source and the inflow C/N ratio was set to 3, 5, 8 and 10 to run for about 120 cycles, under conditions of indoor temperature (15-27℃), initial DO 2-3mg·L-1. The TN removal efficiency and stability of two reactors were compared. The results showed that, BAC reactor had a higher TN removal efficiency than SBR at different C/N ratios. TN removal rate of BAC reactor was 44.88%, 58.07% and 66.64%, when the C/N ratio was 3, 5 and 8 respectively. After increasing the C/N ratio to 10, the BAC reactor could maintain TN removal rate of 63.65%, but the SBR showed sludge bulking. BAC provided various DO environments for microorganisms in a vessel, which was beneficial to SND. BAC could reduce the influence of excessive carbon source on the nitrification system, enlarge the application range and improve the stability of reactor at different C/N ratios, and increase the nitrogen removal capacity of organic matter. BAC provided condition for efficient nitrogen removal. |
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