Effect of Temperature on Flow Properties of Digested Waste Water Sludge
نویسندگان
چکیده
The digested waste water sludge from the Zeinein station, North of Cairo was characterized for its physical and chemical properties. The flow properties of this sludge were followed at different temperatures, for different levels of solid content. The yield strength of the sludge was found to increase linearly with temperature. The apparent viscosity was related to absolute temperature by an equation in the form = A.e . While the constant A varies with both solid content and strain rate, the activation energy at constant strain rate is independent of solid volume fraction. The effect of temperature has to be taken in consideration when the experimental data are used to design the pipeline that is to transport the sludge to the next treatment plant.
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