High turbidity water during the rainy season has long been a challenge to the waterworks in Taiwan. Coagulation is the critical process for solving this problem; however, the dispersion of coagulants in the concentrated solid phase is very difficult. In this study, the effects of rapid mixing on the PACl coagulation of high turbidity water were investigated in terms of turbidity and particle count. Operational parameters of coagulant dosage, coagulant concentration and mixing intensity in the rapid-mixing step exhibited great impacts on the residual turbidity and particle count of the simulated system. Aggregation degree, as evaluated by the Photometric Dispersion Analyser (PDA), was influenced by the intensity of rapid mixing. Poor rapid mixing failed to induce aggregation to effectively coagulate the small and hard to settle particles.
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March 2002
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
March 01 2002
Coagulation of high turbidity water: the effects of rapid mixing
Chichuan Kan;
Chichuan Kan
1Institute of Environmental Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
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Chihpin Huang;
1Institute of Environmental Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
Fax: 886 3 5725958; E-mail: [email protected]
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Jill Ruhsing Pan
Jill Ruhsing Pan
1Institute of Environmental Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC
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Journal of Water Supply: Research and Technology-Aqua (2002) 51 (2): 77–85.
Citation
Chichuan Kan, Chihpin Huang, Jill Ruhsing Pan; Coagulation of high turbidity water: the effects of rapid mixing. Journal of Water Supply: Research and Technology-Aqua 1 March 2002; 51 (2): 77–85. doi: https://doi.org/10.2166/aqua.2002.0007
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