| pH对同步硝化反硝化生物膜内溶解氧分布的影响 |
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| 引用本文： | 黄胜娟, 荣宏伟, 林孟霞. pH对同步硝化反硝化生物膜内溶解氧分布的影响[J]. 环境工程学报, 2015, 9(9): 4233-4238. doi: 10.12030/j.cjee.20150923 |
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| 作者姓名： | 黄胜娟 荣宏伟 林孟霞 |
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| 作者单位： | 1.广州大学土木工程学院, 广州 510006; 2.珠海市城市排水有限公司, 珠海 519000 |
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| 基金项目： | 国家自然科学基金资助项目(51278133,21477027) 广东省自然科学基金资助项目(S2013010013943) 广州市教育系统创新团队资助项目(13C01) |
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| 摘 要： | 采用序批式生物膜反应器处理污水,为了证实同步硝化反硝化生物膜中微区环境的分区现象,研究了pH处于6.5~8.5时pH对该SBBR系统TN去除的影响和各pH条件下的生物膜内溶解氧分布情况,结果表明,随着pH的升高其总氮去除呈上升趋势,并在pH=8.0时达到最高70%;膜内溶解氧浓度均随深度的增加而下降,并在2 000 μm左右处降至0,呈明显分区现象;A~F的DO分布在pH=8.5时所受影响最明显,而同一深度不同pH下的平均DO随pH的增加呈略微下降趋势。
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| 关 键 词： | 同步硝化反硝化 生物膜 pH 微电极 溶解氧 |
| 收稿时间： | 2015-05-26 |
Effect of pH value on distribution of dissolved oxygen (DO) during simultaneous nitrification and denitrification(SND) in biofilm |
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| Huang Shengjuan, Rong Hongwei, Lin Mengxia. Effect of pH value on distribution of dissolved oxygen(DO) during simultaneous nitrification and denitrification(SND) in biofilm[J]. Chinese Journal of Environmental Engineering, 2015, 9(9): 4233-4238. doi: 10.12030/j.cjee.20150923 |
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| Authors: | Huang Shengjuan Rong Hongwei Lin Mengxia |
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| Affiliation: | 1.School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; 2.Zhuhai Urban Drainage Co. Ltd., Zhuhai 519000, China |
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| Abstract: | The sequencing batch biofilm reactor(SBBR) was used to treat wastewater. To confirm the partition of microenvironment during SND in biofilm, we investigated the effect of pH value on TN removal and DO distribution in the system. The results showed that the TN removal rate increased with the rise of pH and it was 70% when the pH was 8.0. Also, the DO in biofilm declined while the depth increased, and the DO was 0 at 2 000 μm. The DO at A~F was influenced significantly when pH=8.5, and the average DO at same depth under different pH decreased slightly with the pH increasing. |
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| Keywords: | SND biofilm pH microelectrode DO |
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