Frontiers of Environmental Science & Engineering
Multifractal characteristics of cylindrical sludge
School of Environmental
and Biological Science and Technology, Dalian University of Technology,
Dalian 116024, China;
Available online: 2009-12-05
This paper analyzes dewatered sludge drying using the multifractal theory. The drying rates of cylindrical sludge with equal masses but different cross-sectional diameters was studied, from which multifractal parameters such as partition function and quality exponent were obtained. The parameters acquired were used to calculate the multifractal singularity spectrum and indicate the presence of multifractal characteristics. The smaller cross-sectional diameters of the sludge were found to be non-homogeneous, and required quantitative methods to analyze.