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SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响

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张明, 刘春, 张磊, 张静, 杨景亮, 年永嘉. SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响[J]. 环境工程学报, 2014, 8(10): 4067-4073.
引用本文: 张明, 刘春, 张磊, 张静, 杨景亮, 年永嘉. SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响[J]. 环境工程学报, 2014, 8(10): 4067-4073.
shu
Zhang Ming, Liu Chun, Zhang Lei, Zhang Jing, Yang Jingliang, Nian Yongjia. Performance of a microbubble-aerated biofilm reactor using SPG membrane system：Effect of air flux[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4067-4073.
Citation: Zhang Ming, Liu Chun, Zhang Lei, Zhang Jing, Yang Jingliang, Nian Yongjia. Performance of a microbubble-aerated biofilm reactor using SPG membrane system：Effect of air flux[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4067-4073.
shu

SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响

  • 1.

    河北科技大学环境科学与工程学院, 石家庄 050080

  • 基金项目:

    国家自然科学基金资助项目（ 51008111）

    河北省应用基础研究计划重点基础研究项目（ 11966726D）

  • 中图分类号: X703

Performance of a microbubble-aerated biofilm reactor using SPG membrane system：Effect of air flux

  • 1.

    School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

  • Fund Project:

  • 摘要: 空气通量是影响SPG膜微气泡曝气生物膜反应器运行性能的重要参数。在不同空气通量条件下，考察了微气泡产生特性及氧传质特性，以及SPG膜微气泡曝气生物膜反应器运行性能。结果表明，当空气通量由31.85 L/（min·m2）降低至12.74 L/（min·m2）时，产生的微气泡平均直径由62.9 μm减小到32.6 μm，氧传质系数由0.31 min-1降低至0.19 min-1，但氧传质效率由67.7%提高至90.3%。生物膜反应器DO浓度随空气通量的降低而下降，导致生物膜好氧代谢活性下降，进而COD和氨氮去除效率降低；同时，在较低DO浓度下，可实现同步硝化反硝化过程去除TN。随着空气通量的降低，生物膜反应器氧利用率增加，空气通量为12.74 L/（min·m2）时，可接近100%；同时，曝气能耗降低，在相同条件下能耗低于传统大气泡曝气。
    Abstract: The air flux was one of the main influencing factors for the performance of a biofilm reactor where the SPG membrane system was used for microbubble aeration. The microbubble generation, the oxygen mass transfer and the performance of the bioreactor were investigated at different air flux when SPG membrane was used for microbubble aeration. The results showed that the average diameter of microbubbles and the volumetric oxygen transfer coefficient decreased from 62.9 μm to 32.6 μm and from 0.31 min-1 to 0.19 min-1, respectively, when the air flux increased from 31.85 L/(min·m2) to 12.74 L/(min·m2), but the oxygen transfer efficiency increased from 67.7% to 90.3%. When the air flux decreased, the DO concentration in the bioreactor decreased, and as a result, the biofilm activity for aerobic digestion decreased and the removal of COD and ammonia became worse. The simultaneous nitrification and denitrification was achieved in the bioreactor at low DO concentration. The oxygen utilization efficiency increased when the air flux decreased, which could be close to 100% at the air flux of 12.74 L/(min·m2). The energy consumption of microbubble aeration also decreased when the air flux decreased, which was lower than that of the conventional bubble aeration under the same conditions.
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  • 收稿日期:  2013-11-12
  • 刊出日期:  2014-09-28
张明, 刘春, 张磊, 张静, 杨景亮, 年永嘉. SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响[J]. 环境工程学报, 2014, 8(10): 4067-4073.
引用本文: 张明, 刘春, 张磊, 张静, 杨景亮, 年永嘉. SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响[J]. 环境工程学报, 2014, 8(10): 4067-4073.
shu
Zhang Ming, Liu Chun, Zhang Lei, Zhang Jing, Yang Jingliang, Nian Yongjia. Performance of a microbubble-aerated biofilm reactor using SPG membrane system：Effect of air flux[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4067-4073.
Citation: Zhang Ming, Liu Chun, Zhang Lei, Zhang Jing, Yang Jingliang, Nian Yongjia. Performance of a microbubble-aerated biofilm reactor using SPG membrane system：Effect of air flux[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4067-4073.
shu

SPG膜微气泡曝气生物膜反应器运行性能——空气通量的影响

  • 1. 河北科技大学环境科学与工程学院, 石家庄 050080
  • 收稿日期:  2013-11-12
基金项目:

国家自然科学基金资助项目（ 51008111）

河北省应用基础研究计划重点基础研究项目（ 11966726D）

摘要: 空气通量是影响SPG膜微气泡曝气生物膜反应器运行性能的重要参数。在不同空气通量条件下，考察了微气泡产生特性及氧传质特性，以及SPG膜微气泡曝气生物膜反应器运行性能。结果表明，当空气通量由31.85 L/（min·m2）降低至12.74 L/（min·m2）时，产生的微气泡平均直径由62.9 μm减小到32.6 μm，氧传质系数由0.31 min-1降低至0.19 min-1，但氧传质效率由67.7%提高至90.3%。生物膜反应器DO浓度随空气通量的降低而下降，导致生物膜好氧代谢活性下降，进而COD和氨氮去除效率降低；同时，在较低DO浓度下，可实现同步硝化反硝化过程去除TN。随着空气通量的降低，生物膜反应器氧利用率增加，空气通量为12.74 L/（min·m2）时，可接近100%；同时，曝气能耗降低，在相同条件下能耗低于传统大气泡曝气。

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