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膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响

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张姣, 肖康, 薛涛, 俞开昌, 黄霞, 文湘华. 膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响[J]. 环境化学, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
引用本文: 张姣, 肖康, 薛涛, 俞开昌, 黄霞, 文湘华. 膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响[J]. 环境化学, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
shu
ZHANG Jiao, XIAO Kang, XUE Tao, YU Kaichang, HUANG Xia, WEN Xianghua. Impact of soluble microbial products on phosphorus removal of activated sludge in membrane bioreactor[J]. Environmental Chemistry, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
Citation: ZHANG Jiao, XIAO Kang, XUE Tao, YU Kaichang, HUANG Xia, WEN Xianghua. Impact of soluble microbial products on phosphorus removal of activated sludge in membrane bioreactor[J]. Environmental Chemistry, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
shu

膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响

  • 1.

    清华大学环境学院环境模拟与污染控制国家重点实验室; 清华大学（环境学院）-北京碧水源科技股份有限公司环境膜技术研发中心, 北京, 100084

  • 基金项目:

    高等学校博士学科点专项科研基金（优先发展领域）（20110002130009）和重大水专项产业化项目（2011ZX07317-002）资助.

Impact of soluble microbial products on phosphorus removal of activated sludge in membrane bioreactor

  • 1.

    ESPC State Key Joint Laboratory, School of Environment, Tsinghua University; THU-Origin Water Joint Research Center for Environmental Membrane Technology, Beijing, 100084, China

  • Fund Project:

  • 摘要: 为探讨累积在MBR中的SMP浓度变化对生物除磷的影响，制备了不同SMP含量的污泥样品进行生物除磷间歇试验，研究SMP含量对污泥除磷能力的影响.结果表明，SMP含量较高的污泥样品具有较高的好氧吸磷速率，达0.20 mg-P·（g-MLSS）-1·min-1，并在MBR脱氮除磷工艺长期运行过程中，保持较高的好氧吸磷速率.对污泥吸磷和释磷过程中上清液组成变化的研究发现，在好氧条件下，存在水相中SMP向污泥相转移的过程.根据这一过程中Zeta电位绝对值的减小推测，上清液中的胶体可能逐步失稳而向污泥相转移，胶体磷由此进入污泥相；此过程可能伴随着对自由磷酸盐的捕集和卷扫，从而促进了污泥的好氧吸磷.
    Abstract: Membrane bioreactors (MBR) can accumulate soluble microbial products (SMP) in the mixed liquor due to membrane retention. In order to investigate the effect of the accumulated SMP on the phosphorus removal ability of activated sludge, sludge samples with different amount of SMP were prepared for batch experiments of biological phosphorus removal. Compared with those with less SMP, samples with more SMP had higher phosphorus uptake rates of up to 0.20 mg-P·(g-MLSS)-1·min-1 during aerobic process. Same results were found during long-run of an MBR-based simultaneous biological nitrogen and phosphorus removal process. Further study on the change of supernatant contents during anaerobic and aerobic processes showed that SMP was transferred from the aqueous phase to the sludge phase. During the aerobic process, decrease in Zeta potential implied that the colloidal portion in the supernatant might become unstable, which may explain the transfer of SMP and thus colloidal phosphorus. The transfer might also involve sweeping and trapping of phosphate and thus further accelerate phosphorus removal.
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  • [1] Huang X, Xiao K, Shen Y. Recent advances in membrane bioreactor technology for wastewater treatment in China[J]. Frontiers of Environmental Science and Engineering in China,2010,4 (3):245-271
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  • 收稿日期:  2013-05-09
张姣, 肖康, 薛涛, 俞开昌, 黄霞, 文湘华. 膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响[J]. 环境化学, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
引用本文: 张姣, 肖康, 薛涛, 俞开昌, 黄霞, 文湘华. 膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响[J]. 环境化学, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
shu
ZHANG Jiao, XIAO Kang, XUE Tao, YU Kaichang, HUANG Xia, WEN Xianghua. Impact of soluble microbial products on phosphorus removal of activated sludge in membrane bioreactor[J]. Environmental Chemistry, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
Citation: ZHANG Jiao, XIAO Kang, XUE Tao, YU Kaichang, HUANG Xia, WEN Xianghua. Impact of soluble microbial products on phosphorus removal of activated sludge in membrane bioreactor[J]. Environmental Chemistry, 2014, 33(5): 765-769. doi: 10.7524/j.issn.0254-6108.2014.05.003
shu

膜生物反应器中溶解性微生物产物浓度对污泥生物除磷能力的影响

  • 1. 清华大学环境学院环境模拟与污染控制国家重点实验室; 清华大学（环境学院）-北京碧水源科技股份有限公司环境膜技术研发中心, 北京, 100084
  • 收稿日期:  2013-05-09
基金项目:

高等学校博士学科点专项科研基金（优先发展领域）（20110002130009）和重大水专项产业化项目（2011ZX07317-002）资助.

摘要: 为探讨累积在MBR中的SMP浓度变化对生物除磷的影响，制备了不同SMP含量的污泥样品进行生物除磷间歇试验，研究SMP含量对污泥除磷能力的影响.结果表明，SMP含量较高的污泥样品具有较高的好氧吸磷速率，达0.20 mg-P·（g-MLSS）-1·min-1，并在MBR脱氮除磷工艺长期运行过程中，保持较高的好氧吸磷速率.对污泥吸磷和释磷过程中上清液组成变化的研究发现，在好氧条件下，存在水相中SMP向污泥相转移的过程.根据这一过程中Zeta电位绝对值的减小推测，上清液中的胶体可能逐步失稳而向污泥相转移，胶体磷由此进入污泥相；此过程可能伴随着对自由磷酸盐的捕集和卷扫，从而促进了污泥的好氧吸磷.

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