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Dispersion Characteristics of Settleable and Dissolvable Pollutants in Waste Stabilization Ponds

Author Affiliations

  • 1Civil Engineering Department, Faculty of Engineering University of UYO, AKWA IBOM State, NIGERIA
  • 2 Department of Civil Engineering University of Nigeria, NSUKKA, ENUGU State, NIGERIA

Res. J. Engineering Sci., Volume 1, Issue (2), Pages 7-14, August,26 (2012)


Determination of the dispersion number or dispersion coefficient of a pollutant in a receiving stream or a treatment plant is a very important aspect of pollution control. A model describing the relationship between the dispersion number of a settleable solid (d) and that of a dissolvable tracer (d) was presented and verified with data collected from a laboratory channel. The model predicted results closer to experimental data than the existing model. The method applied in this research allows for in-situ determination of a pollutant settling velocity more realistically than both stokes equation and quiescent settling analysis. It was shown that using a dissolvable tracer instead of a setteable solid could lead to error. The implication of this in waste stabilization pond design was also discussed.


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