Rheological behavior of wastewater sludge following cationic polyelectrolyte flocculation

Bing Hung Chen, Sue Jean Lee, D. J. Lee, L. Spinosa

研究成果: Article

10 引文 斯高帕斯(Scopus)

摘要

The rheological characteristics of the wastewater sludge were investigated by using a Haake Rheostress RS 75 rheometer. The shear creep compliance experiments and the dynamic viscosity measurements were conducted. The shear creep compliance experiments indicate the addition of polymer coagulants to the sludge samples will form more rigid structures. The elastic solid-like behaviors were always observed in the samples with polymers. The Voigt model was successfully employed in modeling the viscoelastic retardation behavior of sludge samples in the shear creep compliance tests. Moreover, the dynamic viscosity curves of the sludge samples with/without polymer could be described by the power law model of Ostwald and de Waele at the medium shear rates, ca. 100-300 s-1. Consequently, addition of polymer to the sludge tends to extend the applicable ranges of the shear rates for the power law model as well as to decrease the power law index.

原文English
頁(從 - 到)1289-1295
頁數7
期刊Drying Technology
24
發行號10
DOIs
出版狀態Published - 2006 九月 15

    指紋

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

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