Effects of Fractal Structure on Settling Velocities of Flocs
絮体分形结构对沉淀速度影响研究

Fractal structures of kaolin and humic flcos by the mass-size method based on the microbalance and free-settling method based on particle image velocimetry technique were investigated.The results showed that kaolin and humic flocs were characterized by fractal structure.The three-dimensional fractal dimensions of Fe flocs with more compact structure ranged from 2.14 to 2.28 are larger than those of alum flocs ranged from 1.75 to 1.83 by the mass-size method.The fractal dimensions of humic flocs are smaller ...