Fractal Dimension of Floc Growth in Micro-Coagulation Stage II: Some Normal Influencing Factors

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Abstract:

The coagulation experiment, with Kaolin as objects, aluminum chloride (PAC) as coagulant and hydrated MnO2 as coagulant aid, were accomplished under different conditions. In the experiment, the particle size distribution and turbidity in water were detected by on-line detector. The results show that increase PAC dosage, original turbidity, hydrated MnO2 dosage and coagulation time will make the fractal dimensions of floc growth in micro-coagulation stage increase. The fractal dimensions of floc growth in micro-coagulation stage increasing means more particle size <5µm flocs are removed. Hydrated MnO2 can strengthen micro-coagulation.

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Periodical:

Advanced Materials Research (Volumes 243-249)

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4827-4830

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Online since:

May 2011

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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[1] I. Solomentseva, S. Bárány, J. Gregory. The Effect of Mixing on Stability and Break-up of Aggregates Formed from Aluminum Sulfate Hydrolysis Products. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2007, 298(1): 34~41

DOI: 10.1016/j.colsurfa.2006.12.016

Google Scholar

[2] J. Fan, in: Coagulant and Aid-Coagulant (in chinese), edited by X. Yan, J. Fan , volume 4 of Water engineering, chapter, 15, China Building Industry Press (1999).

Google Scholar

[3] H, Tang, Basic Study on Inorganic Polymer Flocculants (in chinese). Environmental Chemical. 1990, 9(3): 1-12.

Google Scholar

[4] W. Yang, Y. Yang, G. Li. Image and coagulation behavior of colloidal hydrated manganese dioxide flocculate particles (in chinese), Chinese Jounal of Environmental Science, 2007, 28(5): 1050-1055.

Google Scholar

[5] W. Yang, X. Li, Y. Yang and G. Li. Preparation and coagulation characteristic of hydrated manganese dioxide (in chinese), China Water & Wastewater, 2006, 22(15): 37-43.

Google Scholar

[6] W. Yang, X. Li, Y. Yang and G. Li. Turbid substance removal in raw water by hydrated manganese dioxide (in chinese). Chemistru and Adhesion, 2006, 28(6): 416-418.

Google Scholar