In-situ determination method of fractal growth process of flocs in water

Abstract

The invention discloses an in-situ determination method of the fractal growth process of flocs in water, relating to a quantitative determination method of flocculation. The method solves the problemsthat the morphological change characteristics of dynamic processes of floc growing, breaking and the like in water can not be determined accurately in present water treatment engineering and by adopting conventional image-based method, a fractal dimension value obtained has poor typicality and the data regularity is ambiguous. The method comprises the following steps: a digital camera is adoptedto conduct in-situ photographing to obtain flocculation images of the whole process of flocculation; floc images in a plurality of flocculation image files at a regular interval are analyzed; a fractal dimension based on the dynamic growing process of the flocs is obtained; and a floc growth fractal dimension value D(fg) is adopted as the determination result. The method can obtain a clear floc image during the whole flocculation process, accurately quantitatively determine parameters of floc fractal aggregation characteristics in the flocculation process and characterize the whole flocculation process. The result obtained by the method can play an important role in guiding the processes of production, use, flocculation technology design, operation control and the like of flocculants.

Description

In situ determination method of floc fractionation and growth process in water technical field The invention belongs to the technical field of water treatment for environmental protection, and in particular relates to a quantitative measurement method for flocculation process. Background technique In water treatment engineering, the size, shape, structure and other morphological characteristics of the flocs formed during the flocculation process play an important role in the transmission and removal of impurity particles in the water, and greatly affect the operating conditions of the subsequent processes and the final effluent. Water quality and treatment charges. In the actual flocculation process, there are often loose flocs that are not easy to settle or are easy to break, resulting in the complexity of the overall flocculation process. So far, there is still insufficient understanding of the floc formation and the interaction between various products in the flocculati...

AI Technical Summary

Problems solved by technology

In order to solve the problems that the current water treatment projects cannot accurately measure the morphological change characteristics of dynamic processes such as floc growth and crushing in water, and the floc fractal dimension values ​​obtained by conventional image methods are poorly representative and the data rules are fuzzy, the present invention proposes a In situ determination method of floc fractionation and growth process in seed water

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