Membrane and Water Treatment

  • 제11권2호
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  • Pages.141-149
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  • 2020
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Assessing the removal efficiency of Synedra sp. through analysis of field data from water treatment plants

  • 투고 : 2019.08.16
  • 심사 : 2019.11.14
  • 발행 : 2020.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Prechlorination could increase the removal efficiency of Synedra, but there was no significant effect of increasing the amount of chlorine added. However, a removal efficiency of greater than 80% was noted when ozone was injected at concentrations greater than 2 mg/L. Also, it was found that on addition of polyamine, a removal efficiency of 80% or more could be achieved. As a result of the analysis of field operation data from the water treatment plants G and B, it was found that at water treatment plant G, the filter run time decreased to 10 hours or less when only coagulant was injected, but the filter run time increased to around 40 hours when polyamine (3 mg/L) was also injected. The Synedra population in the raw water subsequently increased to 2,340 cells/mL, and the filter continued running for more than 20 hours. At water treatment plant B, the average Synedra removal efficiency was 56% when only coagulant was injected, and the filter run time decreased drastically with the increasing population of Synedra in the raw water. However, the removal efficiency of Synedra reached 79% when polyamine was injected together with the coagulant, 90% when ozone was also injected, and 95% when polyamine and ozone were injected together and the filter continued running for over 50 hours. The filter run time was maintained at 60 hours when a Synedra population of 6,890 cells/mL flowed into the Paldang water source, but the filter run time with Synedra at 1,960 cells/mL decreased rapidly from 65 hours to 35 hours when the ratio of the size of the individual Synedra reaching 250 ㎛ or more, increased from 38% to 94%. Therefore, the size of the Synedra is considered to be a factor that significantly influences filter clogging, as well as the size of the Synedra population.

키워드

과제정보

We thank the process manager of each water treatment plant and the researchers at the K-water Institute for providing laboratory analysis data and actual process operation data for this research.

참고문헌

  1. Chen, J.J., Yeh, H.H. and Tseng, I.C. (2003), "Comparison of Ozone and Permanganate as Preoxidant on Treating Eutrophic Raw Water", Transactions Ecology Environ., 65. 1-10.
  2. Choi, S.K., Lee, J.Y. and Cho, K.J. (2003), "Floc-Sedimentation Efficiency of Problematic Algae in the Water Treatment Process", Proceeding of the 2003 autumn joint conference of KSWW and KSWQ, E51-E53.
  3. Gugi, B., Le C.T., Burel, C., Lerouge P., Helbert. W. and Bardor, M. (2015), "Diatom-Specific Oligosaccharide and Polysaccharide Structures Help to Unravel Biosynthetic Capabilities in Diatoms", Mar Drugs. Sep 18, 13(9), 5993-6018. https://doi.org/10.3390/md13095993.
  4. Gwak, J.U. (1994), "Aggregation of Inorganic Coagulants for Water Treatment Theory and Recent Developments", 28th Water Symposium, K-water, 41-65.
  5. Ha, G., Kim, H.W. and Ju, G.J. (1995), "The Correlation Between Phytoplankton and Water Quality in Downstream of Nakdong River", Inje University Environment Institute, 4th Symposium, 21-39.
  6. Ha, T.W. and Choi, S.J. (1999), "Analysis of the Characteristic for the Application of Polymer Flocculants (polyamine, poly (DADM)) to Potable Water Treatment", J. Environ. Sci. Institute, 13, 23-35.
  7. Jun, H.B., Lee, Y.J., Lee, B.D., Lee, J.D. (2001), "Effects of Prechlorination on Diatoms Coagulation", J. Korean Soc. Water Environ., 17(3), 347-365.
  8. Kates, M. and Volcani, B. (1968), "Studies on the Biochemistry and Fine Structure of Silica Shell Formation in Diatoms. Lipid Components of the Cell Walls", Z. Pflanzenphysiologie, 60, 19-29. https://doi.org/10.1016/0005-2760(66)90009-9
  9. Kelly, D.G. (2004), "Chlorine Disinfectants and ORP Control", Washington Tree Fruit Postharvest Conference, December 8th, Yakima, 1-7.
  10. Kim, M.C., Kim, J.H., Seo, G.T. (2014), "Removal Improvement in Water Treatment Plant for Occurrence of Diatoms (Synedra sp.) in the Nakdong River", J. Korean Soc. Environ. Engineers, 36(1), 1-2. https://doi.org/10.4491/KSEE.2014.36.1.29.
  11. Kim, S.J. (2003), "Flocculation of Red Tide Organisms in Sea Water by Using an Ignited Oyster Shell Powder and Loess Combination", Korean Soc. Fisheries Aquatic Sci., 36(6), 716-722. https://doi.org/10.5657/kfas.2003.36.6.716.
  12. Kim, S.S., Lee, Y.J., Lee, H.S. and Park, Y.J. (2014), "The Effect of Polyamine Injection on the Filtration Process", Journal of the Spring Conference of the Korean Society on Water Environment, 144.
  13. Lee, G.S., Kim, M.C., Kwon, J.K. and Seo, G.T. (2013), "Effect of pH Adjustment by $CO_2$ on Coagulation and Aluminum Elution in Water Treatment", J. Korean Soc. Environ. Engineers, 35(1), 17-22. https://doi.org/10.4491/KSEE.2013.35.1.017.
  14. Lee, H.D., Lee, E.S. and Seo, G.T. (1996), "Biology of Waterworks", pursuit of truth publisher corp. 35-39, 209-250.
  15. Lee, J.D. (2002), "Sinking Behavior of Freshwater Diatoms-With Special Reference to Measurement of Phytoplankton Sinking Rate", J. Kor. Soc. Water Qual., 18(6), 683-692.
  16. Lee, J.D., Lee, M.S., Shin, W.S., Kim, Y.H. and Choi, S.J. (2005), "Removal of Freshwater Diatoms(Synedra acus. and Stephanodiscus sp.) by Preozonation and Addition of polyamine Coagulant-aid", Korean J. Chem. Eng., 22(5), 682-686. https://doi.org/10.1007/BF02705782.
  17. Lee, J.H. and Kim, Y.J. (2001), "A study on the Removal of Algae by Coagulation and Sedimentation in the Raw Water of the Nakdong River", J. Environ. Sci., 10(2), 113-117. http://dx.doi.org.
  18. Lim, Y.S., Song, W.S., Cho, J.S., Lee, H.J. and Heo, J.S. (2000), "The Effect of Algae on Coagulation and Filtration of Water Treatment Process", Korean J. Environ. Agriculture, 19(1), 13-19.
  19. MOE (2017), "Standards, specifications and labeling standards for water treatment agents", Ministry of Environment, Korea.
  20. MOE (2017), "Prepare a Plan to Strengthen Water Treatment Agent Usage and Byproducts Management in Connection with Raw Water Quality in Water Treatment Plant", Ministry of Environment, Korea.
  21. Oh, J.S. and Kim, S.P. (2013), "The Comparison of Disinfection Technologies for Managing Antibiotic Resistance; Chlorination, Ozonation and Electron Beam", J. Korean Soc. Water Wastewater, 27(6), 797-803. http://dx.doi.org/10.11001/jksww.2013.27.6.797.
  22. Park, G.T. (1999), "The Water treatment by Mixture of Organic and Inorganic Coagulants at Low Temperatures", M.Sc. Thesis, Kyungpook National University, Daegu, Korea
  23. Park, J.H., Lee, J.D. and Cho, S.J. (2001), "Study of Diatom Removal by Preozonation and Polyamine Coagulant and Characteristics of Their Sinking Rate", Proceeding of the 2001 autumn joint conference of KSWW and KSWQ, 347-350.
  24. Plummer, J D. and Edzwald, J.K. (2002) "Effects of chlorine and ozone on algal cell properties and removal of algae by coagulation", J. Water Supply Res. Technol. AQUA. 51(6), 307-318. https://doi.org/10.2166/aqua.2002.0027.
  25. Reynolds, C.S. (1984), "The Ecology of Freshwater Phytoplankton", Cambridge University Press. 1-384, Cambridge, England, United Kingdom.
  26. Shishlyannikov, S.M., Zakharova, Y.R., Volokitina, N.A., Mikhailov, I.S., Petrova, D.P. and Likhoshway, Y.V. (2011), "A procedure for Establishing an Axenic Culture of the Diatom Synedra acus subsp. radians (Kutz.) Skabibitsch. from Lake Baikal", Limnology Oceanography : Methods, 9, 478-484. https://doi.org/10.4319/lom.2011.9.478.
  27. Venkatachalapathy R. and Karthikeyan P. (2013), "Synedra Species Morphological Observation at Bhavani Region in Cauvery River, Tamil Nadu, India", Res. J. Earth Sci., 1(6), 1-5. http://www.isca.in, http://www.isca.me.
  28. Yamashita, Y.J., Lim, V.H., Doan, Y.T.H. and Adachi, Y. (2018), "Inhibition of Cationic Polymer-Induced Colloid Flocculation by Polyacrylic Acid", Article Water, 10(9), 1-12. https://doi.org/10.3390/w10091215.