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The effect of operating conditions on turbidity removal by polymeric flocculant

Miyajima, Takumi and Kadooka, Hiroto and Tanaka, Takanori and Jami, Mohammed Saedi and Iwata, Masashi (2016) The effect of operating conditions on turbidity removal by polymeric flocculant. In: 12th World Filtration Congress (WFC'12), 11th-15th April 2016, Taipei, Taiwan. (Unpublished)

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Abstract

Since there are many factors which influence the process of flocculation by polymeric flocculant, the scientific understanding of the flocculation mechanism is still under discussion. We have proposed a simple bridging model which expresses flocculation under various additive manners of the flocculant and enables visual understanding of qualitative trends of the flocculation system. In this study, from the simulated results based on the model and experimental data, we obtained the following knowledge. 1) The intermittent addition of polymeric flocculant gives better and reproducible turbidity removal. 2) The optimum dosage, which shows the minimum turbidity at a given manner of addition, increases as the number of doses under the intermittent addition increases. 3) In much lower (or higher) dosage than the optimum dosage, the reproducibility of turbidity removal is satisfactory. All these findings are originated from the difference of probability of bridging formation among particles under various additive manners.

Item Type: Conference or Workshop Item (Invited Papers)
Additional Information: 5545/51213
Uncontrolled Keywords: Flocculants, Flocculation, Modelling, Polyelectrolyte, Turbidity, Water Treatment
Subjects: T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Associate Dr. Mohammed Saedi Jami, PhD CEng MIChemE
Date Deposited: 12 Jul 2016 14:56
Last Modified: 12 Jul 2016 14:56
URI: http://irep.iium.edu.my/id/eprint/51213

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