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作者:

Zhang, Y.-J. (Zhang, Y.-J..) | Zhou, L.-L. (Zhou, L.-L..) | Li, W.-Y. (Li, W.-Y..) | Li, X. (Li, X..) | Li, D.-Q. (Li, D.-Q..) | Li, G.-B. (Li, G.-B..)

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Scopus PKU CSCD

摘要:

Streaming current technique, fluctuation of transmitted light technique, molecular weight distribution and XAD resin adsorption technique were used to study the mechanism of natural organic matter removal by potassium permanganate composite(PPC) enhanced coagulation. Results showed that natural organic matter removal efficiency increased 13% by 0.75 mg/L potassium permanganate composite enhanced coagulation compared with that of alum coagulation alone. Streaming current indicated that potassium permanganate composite decreased the organic matter stability by reducing the surface negative charge, and the SC value increased from 55.2 to 61.4, 69.6 and 87.0 by addition of 0.50, 0.75 and 1.0 mg/L PPC. Coagulation index R indicated both nascent manganese dioxide and subsidiaries played an important role in potassium permanganate composite enhanced coagulation process. Potassium permanganate composite enhanced coagulation increased the removal efficiency of lower molecular weight and hydrophilic organic matter compared with alum coagulation, and hydrophilic organic matter can be reduced from 1.9 mg/L to 1.32 mg/L by the addition of 0.75 mg/L potassium permanganate composite.

关键词:

Coagulation index; Molecular weight distribution; Natural organic matter; Potassium permanganate composite; Streaming current

作者机构:

  • [ 1 ] [Zhang, Y.-J.]State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
  • [ 2 ] [Zhou, L.-L.]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
  • [ 3 ] [Li, W.-Y.]State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
  • [ 4 ] [Li, X.]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 5 ] [Li, D.-Q.]North China Municipal Engineering Design and Research Institute, Tianjin 300074, China
  • [ 6 ] [Li, G.-B.]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

通讯作者信息:

  • [Zhang, Y.-J.]State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China

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来源 :

Environmental Science

ISSN: 0250-3301

年份: 2009

期: 3

卷: 30

页码: 761-764

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