|
|
|
Multifractal characteristics of cylindrical sludge
drying |
| Weiyun WANG,Aimin LI, |
| School of Environmental
and Biological Science and Technology, Dalian University of Technology,
Dalian 116024, China; |
|
|
|
|
Abstract 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.
|
| Keywords
multifractal characteristic
multifractal singularity spectrum
sewage sludge drying
|
|
Issue Date: 05 December 2009
|
|
|
Dai J Y, Xu M Q, Chen J P, Yang X P, Ke Z S. PCDD/F, PAH and heavy metals in the sewagesludge from six wastewater treatment plants in Beijing, China. Chemosphere, 2007, 66: 353―361
doi: 10.1016/j.chemosphere.2006.04.072
|
|
Carlos P, Victor R, Didier L, Patricia A. Immersionfrying for the thermal drying of sewage sludge: an economic assessment. Journal of Environmental Management, 2008, 86: 246―261
doi: 10.1016/j.jenvman.2006.12.035
|
|
Qu Y L, Li A M. Study on drying characteristicof caky Sludge. Journal of Combustion Scienceand Technology, 2005, 1(11): 96―101 (in Chinese)
|
|
Carlos A, Peregrina C. Thermal efficiency in sewagesludge fry drying. In: The Drying 2004—Proceedingsof the 14th International Drying Symposium (IDS2004). São Paulo: 2004, 972―978
|
|
Yu H Y. Investigation on the drying characteristic and drying process ofsludge. Dissertation for the Master’sdegree. Nanjing: Southeast University, 2006 (in Chinese)
|
|
Zheng T T, Mao J J. Multifractal analyses ofprotein sequences. Computer Engineeringand Applications, 2007, 43(20): 6―48 (in Chinese)
|
|
Wang S H, Qiu Z D. Network traffic nonlinearprediction combined with multifractal. Journal on Communications, 2007, 2(28): 45―51 (in Chinese)
|
|
Chai L H. Statistical dynamic features of sludge drying systems. International Journal of Thermal Science, 2006, 46: 802―811
doi: 10.1016/j.ijthermalsci.2006.10.011
|
|
Bodun P O, Shibusawa S, Sasaob A, Sakaib K, Nonakaa H. Dredged sludge moisture predictionby textural analysis of the surface image. Journal of Terramechanics, 2000, 37(1): 3―20
doi: 10.1016/S0022-4898(99)00009-9
|
|
Sun X, Wu Z Q. Principle and Applicationof Fractal. Hefei: China Scientific and Technical University Press, 2003 (in Chinese)
|
|
Spanos L, Irene E A. Investigation of roughenedsilicon surfaces using fractal analysis, 1.2 dimensional variationmethod. American Vacuum Society, 1994, 12(5): 2646―2652
doi: 10.1116/1.579084
|
|
Rubio M A, Edwards C A. Self-affine fractal interfacesfrom immiscible displacement in porous media. Physical Review Letters, 1989, 16(63): 1685―1688
doi: 10.1103/PhysRevLett.63.1685
|
|
Sivakumar B. Suspendedsediment load estimation and the problem of inadequate data sampling:a fractal view. Earth Surface ProcessesLandforms, 2006, 31(4): 414―427
doi: 10.1002/esp.1273
|
|
Yang X D, Ning X B. Multifractal analysis ofhuman synchronous 12-lead ECG signals using multiple scale factors. Physica A: Statistical Mechanics and its Applications, 2007, 15: 413―422
|
|
Zhang L, Xu Y. Study of multifractal spectrumof sol-gel hydrophobic anti-reflective SiO2 coating after laser-conditioning. ActaPhysica Sinica, 2007, 7: 3833―3839 (in Chinses)
|
|
Duan Z H, Feng A G, Xiang D, Wang Z G. Study onmodel and energy consumption of hot-air drying of tilapia fillets. Food Science, 2007, 28(7): 201―205 (in Chinese)
|
|
Li T, Shang P J. A multifractal approach topalmprint recognition. Acta Physica Sinica, 2007, 8: 4393―4401 (in Chinese)
|
|
Perfect E, Sukop M C. Multifractal sierpinski carpets:Theory and application to upscaling effective saturated hydraulicconductivity. Geoderma, 2006, 134: 240―252
doi: 10.1016/j.geoderma.2006.03.001
|
|
Cao M S, ASCE M. Nondestructive assessmentof reinforced concrete structures based on fractal damage characteristicfactors. Journal of Engineering Mechanics, 2006, 132: 924―931
doi: 10.1061/(ASCE)0733-9399(2006)132:9(924)
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
