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CLC number: TU991.22

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Received: 2005-02-20

Revision Accepted: 2005-06-20

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.10 P.1038~1044

http://doi.org/10.1631/jzus.2005.B1038


Flocculation control study based on fractal theory


Author(s):  CHANG Ying, LIU Qian-jun, ZHANG Jin-song

Affiliation(s):  Guangzhou Water Supply Co., Guangzhou 510160, China; more

Corresponding email(s):   acerine@sohu.com

Key Words:  Aggregates, Flocculation control, Fractal dimension, Image analysis, Turbidity


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CHANG Ying, LIU Qian-jun, ZHANG Jin-song. Flocculation control study based on fractal theory[J]. Journal of Zhejiang University Science B, 2005, 6(10): 1038~1044.

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pages="1038~1044",
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DOI - 10.1631/jzus.2005.B1038


Abstract: 
A study on flocculation control based on fractal theory was carried out. Optimization test of chemical coagulant dosage confirmed that the fractal dimension could reflect the flocculation degree and settling characteristics of aggregates and the good correlation with the turbidity of settled effluent. So that the fractal dimension can be used as the major parameter for flocculation system control and achieve self-acting adjustment of chemical coagulant dosage. The fractal dimension flocculation control system was used for further study carried out on the effects of various flocculation parameters, among which are the dependency relationship among aggregates fractal dimension, chemical coagulant dosage, and turbidity of settled effluent under the conditions of variable water quality and quantity. And basic experimental data were obtained for establishing the chemical coagulant dosage control model mainly based on aggregates fractal dimension.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[9] Thieme, J., Niemeyer, J., 1996. Fractal characterization of hematite aggregates by X-ray microscopy. Geol. Rundsch., 85:852.

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