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http://dx.doi.org/10.4491/KSEE.2017.39.1.40

Empirical Study on Applicability of Phosphorus Recovery Process in Wastewater Treatment Plant  

Park, Na-ri (University of Science & Technology)
Chang, Hyang-Youn (University of Science & Technology)
Lim, Hyun-Man (Korea Institute of Civil Engineering and Building Technology)
Ahn, Kwang-Ho (Korea Institute of Civil Engineering and Building Technology)
Kim, Weon-Jae (Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.1, 2017 , pp. 40-49 More about this Journal
Abstract
In this study, we have made the annual total phosphorus (TP) mass balance diagrams for I wastewater treatment plant by utilizing the data of flow rate and TP of each process and tried to choose the optimum unit process empirically for phosphorus recovery. For the applicability evaluation, we have suggested several quantitative indices of flow rate, TP concentration, TP load and SS. Based on the analyses of TP mass balance, it became clear for reducing TP load of the wastewater treatment plant that it is efficient to recover phosphorus from the side stream in which the amount of flow rate is just 1/16, but TP concentration and load are 78 and 4.8 times larger than those of the influent of the plant. After the detailed applicability evaluation for the side stream, it could be concluded that the unit process of waste activated sludge thickener supernatant or dehydration filtrate are appropriate. Meanwhile, we did fundamental experiments utilizing the dewatering filtrate with TP concentration of 141.5 mg/L. After adjusting pH 10 and $Ca^{2+}$ concentration 250, 500, 1000 mg/L, it was stirred slowly. As a result, the $PO_4-P$ and TP removal efficiencies were above 95 percent; the results of the experiment imply the applicability of phosphorus recovery process in a wastewater treatment plant strongly.
Keywords
Side Stream; Phosphorus Recovery; Hydroxyapatite; Phosphorus Mass Balance; Wastewater Treatment Plant;
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  • Reference
1 Daegu Metropolitan City Environmental Installations Corporation, "Development of high rate phosphorus removal process for the integrated water quality management in Nakdong river,"(2008).
2 Choi, U. S., "Water and wastewater engineering," Cheongmungak( 1999).
3 Song, Y., Weidler, P.G., Berg, U., Nuesch, R. and Donnert, D., "Calcite-seeded crystallization of calcium phosphate for phosphorus recovery," Chemosphere, 63, 236-243(2006).   DOI
4 Chen, X., Kong, H., Wu, D., Wang, X. and Lin, Y., "Phosphate removal and recovery through crystallization of hydroxyapatite using xonotlite as seed crystal," J. Environ. Sci., 21, 575-580(2009).   DOI
5 MacAdam, J. and Parsons, S. A., "Calcium carbonate scale formation and control," Rev. Environ. Sci. Bio/Technol., 3, 159-169(2004).   DOI
6 Kim, E. H., Lee, D. W., Hwang, H. K. and Yim, S. B., "Recovery of phosphates from wastewater using converter slag: Kinetics analysis of a completely mixed phosphorus crystallization process," Chemosphere, 63, 192-201(2006).   DOI
7 Yim, S. and Kim, E. H., "A comparative study of seed crystals for the phosphorus crystallization process," Environ. Technol., 25(7), 741-750(2004).   DOI
8 Takaoka, M., Oshita, K., Sun, X. C., Matsukawa, K. and Fujiwara, T., "Phosphorous material flow and its recovery from waste water and solid waste," UNEP-DTIE-IETC, Regional Workshop on Waste Agricultural Biomass, March 2-5th(2010).
9 Jo, Y. M., Jeon, B. H. and Park, C. J., "Recovery and recycle technologies of phosphorous from river and water treatment plants," KIC NEWS, 14(5)(2011).
10 The Hwankyung Media Shinmun, "Need to adjustment of total phosphorous removal policy," , May, 30(2012).
11 The Office of Waterworks Seoul Metropolitan Government, "Study of recovery plant development of phosphorous in dewatering filtrate,"(2014).
12 Nakdong River Basin Environmental Office, "Casebook of technical assistance for total phosphorous treatment plant," (2012).
13 Song, K. H. and Lee, Y. W., "Removal of returned water and budget savings through improvement of sludge treatment process," Gwangju Environmental Ecology Bureau, Ecology & Water Quality Division, Gwangju Environment Corporation(2013).
14 Ministry of Environment, "Study of treatment efficiency improvement of phosphorous treatment plant,"(2012).
15 Ministry of Environment, "Study of test operation on total phosphorous treatment intensification,"(2009).