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Characterization of floc size, strength and structure under various coagulation mechanisms
Li, Tao; Zhu, Zhe; Wang, Dongsheng; Yao, Chonghua; Tang, Hongxiao
2006
Source PublicationPOWDER TECHNOLOGY
Volume168Issue:2Pages:104-110
AbstractFlocs generated by various coagulation mechanisms exhibit different size, strength and structure. The properties and fractal dimensions of flocs formed under three common coagulation mechanisms, i.e. charge neutralization, sweep and bridging, were investigated at various hydraulic conditions. The results showed that the floc size decreased with the increasing average velocity gradient G and the stable floc size exponent T was of the following hierarchy: charge neutralization (0.6107)> sweep (0.5618) > bridging (0.3674). Furthermore, fractal dimensions of flocs were the highest when formed by sweep and the lowest when generated by bridging flocculation. The mass fractal dimensions measured by light scattering were between 2.0 and 3.0 and the floc strength was between 0.01 and 0.58 N m(-2). An intrinsic unity of the relationship among floc size, fractal dimensions, floc strength under the three coagulation mechanisms was demonstrated. (c) 2006 Elsevier B.V. All rights reserved.
Department环境水质学国家重点实验室
KeywordFloc Size Fractal Dimension Strength Coagulation Mechanism
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/22970
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Li, Tao,Zhu, Zhe,Wang, Dongsheng,et al. Characterization of floc size, strength and structure under various coagulation mechanisms[J]. POWDER TECHNOLOGY,2006,168(2):104-110.
APA Li, Tao,Zhu, Zhe,Wang, Dongsheng,Yao, Chonghua,&Tang, Hongxiao.(2006).Characterization of floc size, strength and structure under various coagulation mechanisms.POWDER TECHNOLOGY,168(2),104-110.
MLA Li, Tao,et al."Characterization of floc size, strength and structure under various coagulation mechanisms".POWDER TECHNOLOGY 168.2(2006):104-110.
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