Rheological Properties of Livestock Waste Slurries

Abstract

This study has examined experimentally a centrifugation method to determine the equilibrium sludge volume fraction as a parameter of the rehological properties (i. e., relationship between shear stress and shear rate) of livestock waste slurries over a vider total solids range. The viscosity constant and flow behavior index can be expressed in terms of the equilibrium sludge volume fraction. Values of constantants were determined for Holstain dairy cow, heifer, swine and poultry waste slurries.