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碱度对膜生物反应器硝化过程和膜污染的影响

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胡苗苗, 洪俊明, 李尚惠, 戴兰华, 陈向强, 谢小青. 碱度对膜生物反应器硝化过程和膜污染的影响[J]. 环境工程学报, 2015, 9(10): 4711-4716. doi: 10.12030/j.cjee.20151015
引用本文: 胡苗苗, 洪俊明, 李尚惠, 戴兰华, 陈向强, 谢小青. 碱度对膜生物反应器硝化过程和膜污染的影响[J]. 环境工程学报, 2015, 9(10): 4711-4716. doi: 10.12030/j.cjee.20151015
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Hu Miaomiao, Hong Junming, Li Shanghui, Dai Lanhua, Chen Xiangqiang, Xie Xiaoqing. Effect of influent alkalinity on nitrification and membrane pollution of membrane bioreactor[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4711-4716. doi: 10.12030/j.cjee.20151015
Citation: Hu Miaomiao, Hong Junming, Li Shanghui, Dai Lanhua, Chen Xiangqiang, Xie Xiaoqing. Effect of influent alkalinity on nitrification and membrane pollution of membrane bioreactor[J]. Chinese Journal of Environmental Engineering, 2015, 9(10): 4711-4716. doi: 10.12030/j.cjee.20151015
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碱度对膜生物反应器硝化过程和膜污染的影响

  • 1.

    华侨大学环境科学与工程系, 厦门 361021

  • 2.

    厦门市排水监测站, 厦门 361005

  • 3.

    厦门水务中环污水处理有限公司, 厦门 361005

  • 基金项目:

    厦门科技计划项目(3502Z20131026)

    "水体污染控制与治理科技"重大专项(2012ZX07313-001-08)

    国家自然科学基金资助项目(51078157)

  • 中图分类号: X703

Effect of influent alkalinity on nitrification and membrane pollution of membrane bioreactor

  • 1.

    Department of Environmental Science and Engineering, Huaqiao University, Xiamen 361021, China

  • 2.

    Drainage Monitoring Station, Xiamen 361005, China

  • 3.

    General Water of Xiamen Sewage Co.Ltd.Xiamen 361005, China

  • Fund Project:

  • 摘要: 采用一体化浸没式膜生物反应器处理生活污水,研究进水碱度对硝化过程和膜污染过程的影响。结果表明,碱度对膜生物反应器工艺的硝化过程影响较大;当碱度充足(224~510 mg/L)时,氨氮去除率达到98.6%,出水的pH基本稳定,当进水碱度不足时,氨氮去除率下降,出水的pH低于6,pH变化滞后于碱度的变化;进水碱度变化对COD去除影响不大,去除率稳定在91%以上;随着进水碱度下降,膜生物反应器内的胞外聚合物EPS由10 mg/g MLSS上升至26 mg/g MLSS,碱度充足时MBR运行周期最长可达10 d,当碱度不足引起反应器中的EPS浓度上升,导致膜污染加剧,膜生物反应器的运行周期下降到2 d。
    Abstract: The effect of the influent alkalinity on the nitrification during wastewater treatment by a submerged membrane bioreactor was investigated,and the parameters of the reactor were tested at the same time.The results showed that the alkalinity had a significant effect on the nitrification.When the alkalinity was sufficient(224—510 mg/L),the ammonia nitrogen removal rate was over 98.6%,and the pH was stable.While the alkalinity was insufficient,the ammonia nitrogen removal rate decreased and the effect of pH on the influent of MBR was lagged behind the alkalinity.There was little effect on the COD of the effluent,and the removal efficiency reached 91%.As the alkalinity of influent dipped,EPS increased from 10 to 26 mg/g MLSS,which caused the inverses washing cycle shorten and membrane pollution was aggravating.The inverses washing cycle was up to 10 d when the alkalinity of influent was sufficient,but decreased to 2 d while the alkalinity was insufficient.
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  • 收稿日期:  2014-09-01
  • 刊出日期:  2015-10-14

碱度对膜生物反应器硝化过程和膜污染的影响

  • 1.  华侨大学环境科学与工程系, 厦门 361021
  • 2.  厦门市排水监测站, 厦门 361005
  • 3.  厦门水务中环污水处理有限公司, 厦门 361005
  • 收稿日期:  2014-09-01
基金项目:

厦门科技计划项目(3502Z20131026)

"水体污染控制与治理科技"重大专项(2012ZX07313-001-08)

国家自然科学基金资助项目(51078157)

摘要: 采用一体化浸没式膜生物反应器处理生活污水,研究进水碱度对硝化过程和膜污染过程的影响。结果表明,碱度对膜生物反应器工艺的硝化过程影响较大;当碱度充足(224~510 mg/L)时,氨氮去除率达到98.6%,出水的pH基本稳定,当进水碱度不足时,氨氮去除率下降,出水的pH低于6,pH变化滞后于碱度的变化;进水碱度变化对COD去除影响不大,去除率稳定在91%以上;随着进水碱度下降,膜生物反应器内的胞外聚合物EPS由10 mg/g MLSS上升至26 mg/g MLSS,碱度充足时MBR运行周期最长可达10 d,当碱度不足引起反应器中的EPS浓度上升,导致膜污染加剧,膜生物反应器的运行周期下降到2 d。

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