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http://dx.doi.org/10.4491/KSEE.2013.35.11.803

Fluoride Removal Using Ready-Mixed Concrete Sludge  

Kang, Min-Koo (Department of Environmental Engineering, Chungbuk National University)
Shin, Gwan-Woo (Department of Environmental Engineering, Chungbuk National University)
Lee, Sang-Ill (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.35, no.11, 2013 , pp. 803-808 More about this Journal
Abstract
The purpose of this study was performed to investigate the optimum conditions of pH, concrete sludge, seed dosage, mixing intensity, operation time in treating fluoride-containing wastewater as $CaF_2$ using the ready-mixed concrete sludge. Considering fluoride removal, water content, that pH 6, concrete sludge dosage of 10 g/L, Seed dosage ($CaF_2$) of 2 g/L, mixing intensity of 100 rpm and operation time of 60 min were found to be optimum. Correspondingly, removal of fluoride and water content was about 85% and 64%, respectively. Increase in amount of seed dosage did not affect fluoride removal efficiency. but the result that the water content is decreased was shown up in occuring the solid-liquid separation well.
Keywords
Concrete Sludge; Water Content; Seed Dosage; Fluoride Removal; pH; Mixing Intensity;
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  • Reference
1 Oh, S. W. and Lee, B. J., "Heavy Metal Contamination of Soil by Wash Water of Ready Mixed Concrete," Kor. Geoenviron. Soc., 12(5), 51-57(2011).
2 Kim, E. E., Park, J. Y. and Lee, G. B., "Fluoride wastewater Treatment by waste concrete powder," Proc. Kor. Soc. Environ. Eng. Kyungsung Univ., pp. 839-846(2004).
3 An, M. K., Woo, G. N., Kim, J. H., Kang, M. K., Ryu, H. D. and Lee, S. I., "Optimum Condition for Fluoride Removal Prior to the Application of Struvite Crystallization in Treating Semiconductor Wastewater," Kor. Soc. Water Environ., 25(6), 916-921(2009).   과학기술학회마을
4 Kim, S. H., Kim, G. Y., Lim, C. S. and Lee, S. I., "Fluoride Removal Considering Struvite Crystallization Reaction," Kor. Soc. Water Sci. Technol., 17(3), 141-150(2009).
5 Woo, G. N, "Treatment of Fluorine in Semiconductor Wastewater with $CaF_2$ Crystallization Method," Master's Thesis, Chungbuk National University (2005).
6 Kim, Y. I. and Kim, D. S., "Studies on the Calcium Precipitation Treatment of Fluoride," Kor. Soc. Water Environ., 23(3), 371-376(2007).   과학기술학회마을
7 Benefield, L. D., Jukins, J. F. and Weand, B. L., "Process Chemistry water and wastewater treatment," Prentice-Hall, Inc., USA, (1982).
8 Agyei, A. M., Strydom, C. A. and Potgieter, J. H., "The Removal of Phosphate Ions from Aqueous Solution by Fly Ash, Slag, Ordinary Portland Cement and Related Blends," Cement Concrete Res., 32(12), 1889-1897(2002).   DOI   ScienceOn
9 Raichur, A. M. and Basu, M. J., "Adsorption of Fluoride onto Mixed Rare Earth Oxides," Sep. Purific. Technol., 24 (1-2), 121-127(2001).   DOI   ScienceOn
10 Na, J. S., "Fluoride removal by lime precipitation and rare earth adsorbents," J. Inst. New Technol., 28, 181-187(1999).
11 Kim, E. E., "Treatment of Fluoride Acid Wastewater and Solidification/Stabilization of Arsenic Contaminated Soil Using Waste Concrete Powder," Master's Thesis, Han yang University (2008).
12 Gougar, F. P., Scheetz, B. E. and Roy, D. M., "Ettringite and C-S-H portland Cement phase for waste ion immobilization: a review," Waste Manage., 14(4), 295-303(1996).
13 Kim, S. H., Treatment efficiency of fluoride from LCD wastewater for different calcium sources, Master's Thesis, Chungbuk National University (2011).