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DOI : ,    Vol.5, No.2, 37 ~ 48, 1997
Title
A study on the structural properties of polymeric floc by turbidity fluctuation
정호진Ho Jin Chung
Abstract
During a flocculation process, the fractal aggregate has various shape and structure. Floc characteristics which are important for settling are size, effective density, and shape. It is difficult to measure the properties of flocs by direct methods, because flocs are very fragile and difficult to handle. Turbidity fluctuation techniques are useful for measurement without any breakage of floc. This method is based on the mesurements of flocculation in the intensity of light transmitted through the suspension. In this study, the observed floc size-density relationships demonstrated that floc density generally decreases with increasing floc size. The slope of size-density function changes depending on flocculating conditions. Fractal dimension D, varies depending on turbidity. It has been obtained that the value D is bigger than 2 for polymeric flocculation. This indicates that flocs are dense, small and compact. This is important information for a better understanding of the flocculation phenomenon.
Key Words
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