Browse > Article
http://dx.doi.org/10.7464/ksct.2012.18.4.404

Effect of Rapid Mixing Intensity and Coagulant Dosages on Phosphorus Removal by Coagulation  

Han, Hyun-Jin (Department of Environmental Engineering, Changwon National University)
Moon, Byung-Hyun (Department of Environmental Engineering, Changwon National University)
Publication Information
Clean Technology / v.18, no.4, 2012 , pp. 404-409 More about this Journal
Abstract
In this study, the effects of mixing intensity and coagulant dosages on the characteristics of floc growth for phosphorus removal were investigated. The experiments were conducted under Al/P molar ratio of 1.0, 1.5 and 2.0; rapid mixing intensity with G value of 100, 300, and 500 $s^{-1}$. The characteristics of floc growth were measured by flocculation index (FSI) and the removal efficiencies of phosphorus by using different size filters. The removal efficiencies of soluble phosphorus increased as Al/P molar ratio and rapid mixing intensity increased. However, the highest removal efficiencies of T-P were observed at G value of 300 $s^{-1}$. When Al/P molar ratio was lower than 1.0, the value of FSI at G value of 500 $s^{-1}$ was the largest. However, when Al/P ratio was larger than 1.0, the value of FSI at G value 300 $s^{-1}$ was the largest. Effects of mixing intensity and Al/P molar ratio on coagulation for phosphorus removal of synthetic and real wastewater effluent were observed to be similar.
Keywords
Coagulation; Rapid mixing; Al/P molar ratio; Phosphorus removal; Floc;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Han, S. W., and Kang, L. S., "Removal Mechanism of Phosphorus in Wastewater Effluent Using Coagulation Process," Environ. Eng. Res., 32(8), 774-779 (2010).   과학기술학회마을
2 Kwak, J. W., "Physico-chemical Principle and Practice of Water Treatment," Yeigigak, Seoul, 1998, pp. 39-41, pp. 194-269.
3 Liu, G., Zhang, X., and Talley, J. W., "Effect of Copper(II) on Natural Organic Matter Removal During Drinking Water Coagulation Using Aluminum-Based Coagulants," Water Environ. Res., 79(6), 593-599 (2007).   DOI   ScienceOn
4 Zhu, I. X., Rothberg, M. R., and Wiedmeier, T., "Pilot Study on TOC Removal in Drinking Water Using Enhanced Coagulation Assisted by Membrane Ultrafiltration," Am. Water Works Assoc., 3, 1499-1514 (2008).
5 Kim, S. H., Yoon, D. S., and Yoon, B. H., "Evaluation of Effect of Rapid Mixing Intensity on Chemical Phosphorus Removal Using Al Hydrolysis Speciation," J. KSWW., 25(3), 367-373 (2011).
6 Yan, M., Wang, D., Ni, J., Qu, J., Chow, C. W. K., and Liu, H., "Mechanism of Natural Organic Matter Removal by Polyaluminium Chloride : Effect of Coagulant Particle size and Hydrolysis Kinetics," Water Res., 42(12), 3361-3370 (2008).   DOI   ScienceOn
7 Yu, W. Z., John, G., Luiza, C., and Guibai L., "The Role of Mixing Conditions on Floc Growth, Breakage and Re-growth," Chem. Eng. J., 171(2), 425-430 (2011).   DOI   ScienceOn
8 Song, Y. K., Jung, C. W., and Sohn, I. S., "Characterization of Natural Organic Matter by Rapid Mixing Condition," J. KSWW., 20(4), 559-571 (2006).   과학기술학회마을
9 Yu, W. Z., John, G., and Luiza, C., "Breakage and Re-growth of Flocs: Effect of Additional Doses of Coagulants Species," Water Res., 45(20), 6718-6724 (2011).   DOI   ScienceOn