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Distribution of extracellular polymeric substances in pilot-scale membrane bioreactor

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Abstract

The spatial distribution of extracellular polymeric substances (EPS) in a pilot-scale membrane bioreactor (MBR) was studied. The sampling points on top of and inside the membrane module were measured and analyzed by the experimental variant function. The content of EPS was spatially interpolated by ordinary Kriging method, and illustrated with SURFER software. A case study was carried out in an MBR with membrane aperture of 0.4 μm and handling capacity of 120 m3/d in Jizhuangzi sewage treatment plant, Tianjin. From the visualization of EPS distribution, it is seen that on the horizontal plane, the content of EPS was the lowest at the center; and on the vertical plane, the content of EPS decreased with the increase of depth. The shearing force caused by aeration of perforated pipe and the influent mode are the main influencing factors for this distribution.

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Correspondence to Hongwei Zhang  (张宏伟).

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Supported by Special Fund Project for Technology Innovation of Tianjin (No.06FZZDSH00900).

XING Kai, born in 1983, male, doctorate student.

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Xing, K., Zhang, H., Sha, Z. et al. Distribution of extracellular polymeric substances in pilot-scale membrane bioreactor. Trans. Tianjin Univ. 16, 147–151 (2010). https://doi.org/10.1007/s12209-010-0027-0

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  • DOI: https://doi.org/10.1007/s12209-010-0027-0

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