| 反硝化生物滤池中生物膜量与脱氮效果和脱氢酶活性的关系 |
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| 引用本文： | 叶星, 马凯迪, 黄俊生, 刘玉红, 关永年, 恽云波, 徐锡梅, 章文华. 反硝化生物滤池中生物膜量与脱氮效果和脱氢酶活性的关系[J]. 环境工程学报, 2020, 14(5): 1210-1215. doi: 10.12030/j.cjee.201907157 |
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| 作者姓名： | 叶星 马凯迪 黄俊生 刘玉红 关永年 恽云波 徐锡梅 章文华 |
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| 作者单位： | 1.苏州工业园区清源华衍水务有限公司，苏州 215021; 2.德国亚琛工业大学水和固体废弃物管理研究所，亚琛 52072 |
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| 基金项目： | 苏州市水利水务科技项目;德国联邦教育与研究部资助项目 |
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| 摘 要： | 采用自主研发的中试反硝化生物滤池处理传统活性污泥法的二沉池出水，研究了稳定运行下生物膜量与脱氮效果和脱氢酶活性之间的关系。结果表明：根据VSS/SS=0.78、VSS/SS>0.78、VSS/SS<0.78，将SS分为3个区域，分别为区域1(232.5~1 246.6 mg·L−1)、区域2(1 246.6~2 542.7 mg·L−1)、区域3(2 542.7~3 523.9 mg·L−1)。在区域2内能获得最大的${rm{NO}}_3^ - $-N和TN去除能力，去除率分别为95.0%和85.7%及最大的总脱氢酶活性(TDHA)，为112.5 g；单位质量生物膜脱氢酶活性(DHA)与SS和VSS之间显著负相关，R2分别为0.822和0.876；TDHA随SS的增加而增加，直至VSS/SS开始减小时随之减小。DHA能较好地从微观层面反应微生物的活性，TDHA可从宏观层面反映整个反应器的生物活性，为反硝化生物滤池运行提供参考。
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| 关 键 词： | 脱氢酶活性 生物膜量 脱氮效果 反硝化生物滤池 |
| 收稿时间： | 2019-07-24 |
Relationship between biofilm mass and nitrogen removal efficiency,dehydrogenase activity in the denitrification biological filter |
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| YE Xing, MA Kaidi, HUANG Junsheng, LIU Yuhong, GUAN Yongnian, YUN Yunbo, XU Ximei, ZHANG Wenhua. Relationship between biofilm mass and nitrogen removal efficiency, dehydrogenase activity in the denitrification biological filter[J]. Chinese Journal of Environmental Engineering, 2020, 14(5): 1210-1215. doi: 10.12030/j.cjee.201907157 |
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| Authors: | YE Xing MA Kaidi HUANG Junsheng LIU Yuhong GUAN Yongnian YUN Yunbo XU Ximei ZHANG Wenhua |
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| Affiliation: | 1.Suzhou Industrial Park Qingyuan & Hong Kong China Water Co. Ltd., Suzhou 215021, China; 2.Research Institute for Water and Waste Management at RWTH Aachen University, Aachen 52072, Germany |
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| Abstract: | A self-developed pilot denitrification biological filter was used to study the relationship between biofilm mass and nitrogen removal efficiency, dehydrogenase activity in stable state when treating the secondary effluent from a conventional activated sludge process. The results showed that SS could be divided into three regions: region 1(232.5~1 246.6 mg·L−1), region 2(1 246.6~2 542.7 mg·L−1), region 3(2 542.7~3 523.9 mg·L−1) according to VSS/SS ratio equal to 0.78, higher than 0.78 or less than 0.78. In Region 2, the maximum removal rates of ${rm{NO}}_3^ - $-N and TN were obtained, and they were 95.0% and 85.7%, respectively. At the same time, the maximum total dehydrogenase activity(TDHA) was also obtained with a value of 112.5 g. Biological membrane dehydrogenase activity per unit mass (DHA) was negatively correlated with SS and VSS, with the R2 of 0.822 and 0.876, respectively. TDHA increased with the increase of SS, and decreased until VSS/SS began to decrease. DHA could better reflect the microbial activity at a micro-level, while TDHA could reflect the biological activity of the whole reactor at a macro-level, which provides theoretical basis for the denitrification biological filter operation. |
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| Keywords: | dehydrogenase activity biofilm mass nitrogen removal efficiency denitrification biological filter |
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