Research on Apparent Viscosity Behavior of Municipal Sludge

Researches about the viscous of municipal sludge can be constructive especially in its drying and transportation. The change of apparent viscosity in terms of moisture content and temperature reveals that the former is primary. The apparent viscosity increases rapidly at moisture content lower than 88% with an exponent function and It is negative correlation with moisture content above 90% but only a litter change which has nothing to do with the temperature. However, it becomes to oscillate below 87% of moisture content which is attributed to complicated activities of microbe and temperature.