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Removal of Phosphonates and Polyphosphates in the Coagulation Process

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Chemical Water and Wastewater Treatment VI

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Abstract

The interaction of both phosphonates and tripolyphosphate with three coagulants, PAX 20, alum, and ferric chloride, was studied in laboratory experiments. Besides coagulation of P-components in synthetic test water, adsorption on preformed hydroxide flocs was evaluated. Phosphonates were removed more efficiently by the Al coagulants, however, adsorption on flocs did not seem to be the only removal mechanism. Alum was the best-suited coagulant for polyphosphate removal. Also in this case several mechanism must be assumed. Water hardness improved the removal of both P-species.

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Authors and Affiliations

  1. Dept. of Environmental Engineering, University of Paderborn, An der Wilhelmshöhe 44, D-37671, Höxter, Germany

    J. Fettig, P. Seydel & C. Steinert

Authors
  1. J. Fettig
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  2. P. Seydel
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  3. C. Steinert
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Editors and Affiliations

  1. Institut für Siedlungswasserwirtschaft, Universität Fridericiana zu Karlsruhe, Am Fasanengarten, D-76128, Karlsruhe, Germany

    Hermann H. Hahn Ph. D.  & Erhard Hoffmann  & 

  2. Faculty of Civil Engineering Dept. of Hydraulic and Environmental Engineering, Norwegian University of Science and Technology NTNU, S.P. Andersens vei 5, N-7034, Trondheim, Norway

    Hallvard Ødegaard

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Fettig, J., Seydel, P., Steinert, C. (2000). Removal of Phosphonates and Polyphosphates in the Coagulation Process. In: Hahn, H.H., Hoffmann, E., Ødegaard, H. (eds) Chemical Water and Wastewater Treatment VI. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-59791-6_26

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  • DOI: https://doi.org/10.1007/978-3-642-59791-6_26

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-64126-8

  • Online ISBN: 978-3-642-59791-6

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