상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제19권3호
  • /
  • Pages.370-377
  • /
  • 2005
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

정수처리시 천연유기물질의 제거에 대한 급속혼화유형의 영향

Influence of Different Mixing Types on the Removal of Natural Organic Matter in Water Treatment

  • 김현철 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 유명진 (서울시립대학교 환경공학부) ;
  • 이석헌 (한국과학기술연구원 수질환경 및 복원연구센터)
  • 투고 : 2005.05.19
  • 심사 : 2005.06.10
  • 발행 : 2005.06.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Dispersion of coagulant should be completed in a fraction of a second before the metal hydroxide precipitate has form. For the reason so-called pump diffusion flash mixing (PDFM) have been proposed, and PDFM is one of reasonable methods to quickly disperse the hydrolyzing metal salts. In this study, therefore, we attempt to understand the difference of removal characteristics of natural organic matter (NOM) between pump diffusion flash mixing (PDFM) and conventional rapid mixing (CRM) for coagulation in a water treatment system, and to enhance the removal of NOM through the improved mixing process. DOC and turbidity removal by PDFM higher than those by CRM, while SUVA value of water treated by PDFM was high as compared with that by CRM. Hydrophilic NOM was more effectively removed by PDFM than CRM, since charge neutralization effect increased by quick dispersion of coagulant. The DBP formation potentials due to NOM was effectively reduced by the improved mixing (i.e., PDFM) for coagulation and could be controlled through decrease in concentration of precursor rather than reduction of activity with disinfectant.

키워드

참고문헌

  1. Bull, R.J. and Kopfler, F.C. (1991) Health effects of disinfectants and disinfection by-products. American Water Works Association Research Foundation, Denver, CO.
  2. Cabaniss, S.E. and Shuman, M.S. (1988) Copper binding by dissolved organic matter: I. Suwannee River fulvic acid equilibria, Geochim. Cosmochim Acta., 52, pp. 185-193 https://doi.org/10.1016/0016-7037(88)90066-X
  3. Chang, E.E., Liang, C.H., Ko, Y.W. and Chiang, P.C. (2002) Effect of ozone dosage for removal of model compounds by ozone/GAC treatment, Ozone Sci. Eng., 24, pp. 357-367 https://doi.org/10.1080/01919510208901626
  4. Chen, Y., Senesi, N. and Schnitzer, M. (1977) Information provided on humic substances by E4/E6 ratios. Soil Sci. Soc. Am. J. 41, pp. 352-358 https://doi.org/10.2136/sssaj1977.03615995004100020037x
  5. Clark, M.M., David, R. and Wiesner, M.R. (1987) Effect of micro mixing on product selectivity in rapid mix, In proceeding of American Water Works Association Annual Conference, Kansas, pp. 14-18
  6. Deangelo, A.B. and McMillan, L.P. (1988) The carcinogenicity of the chlorinated acetic acids. USEPA, Health Effect Research Laborafory, Cincinnati, Ohio
  7. Dilling, J. and Kaiser, K. (2002) Estimation of the hydrophobic fraction of dissolved organic matter in water samples using UV photometry, Water Res., 36, pp. 5037-5044 https://doi.org/10.1016/S0043-1354(02)00365-2
  8. Gregor, J.E., Nokes, C.J. and Fenton, E. (1997) Optimising natural organic matter removal from low turbidity waters by controlled pH adjustment of aluminium coagulation, Water Res., 31(12), pp. 2949-2958 https://doi.org/10.1016/S0043-1354(97)00154-1
  9. Gunten, U. (2003) Ozonation of drinking water: Part II. Disinfection and by-product formation in presence of bromide, iodide of chlorine, Water Res., 37, pp.1469-1487
  10. Imai, A., Fukushima, T., Matsushige, K. and Kim, Y.H. (2001) Fractionation and characterization of dissolved organic matter in a shallow eutrophic lake, its inflowing rivers, and other organic matter sources, Water Res. 35(17), pp. 4019-4028 https://doi.org/10.1016/S0043-1354(01)00139-7
  11. Kawamura, S. (2000) Intergrated Design and Operation of Water Treatment Facilities. 2nd Ed., John Wiley & Sons, Inc., New York, pp. 74-84
  12. Khan, E., Babcock, R.W., Suffet, I.H. and Stensform, M.K. (1998) Biodegradable dissolved organic carbon for indication wastewater reclamation plant performance and treated wastewater quality, Water Environ. Res., 70, pp. 1033-1040 https://doi.org/10.2175/106143098X123363
  13. Kim, H.C., Oh, H.K., Ahn, S.K., Yu, M.J. and Bang, K.W. (2004) Characterization of Natural Organic Matter in Conventional Water Treatment Processes for Han River Water to Monifor and Control DBPs, in Proceedings of IWA World Water Congress and Exhibition, Marrakech, Morocco
  14. Letterman, R.D., Amirtharajah, A. and O'Melia, C.R. (1990) Coagulation and Flocculation in Water Quality and Treatment, 5th, Ed. McGraw-Hill, New York
  15. Ma, H., Kim, S.D., Cha, D.K. and Allen, H.E. (1999) Effect of kinetics of complexation by humic acid on toxicity of copper to Ceriodapbnia dubia, Environ. Toxicol. Chem., 18, pp. 828-837 https://doi.org/10.1897/1551-5028(1999)018<0828:EOKOCB>2.3.CO;2
  16. O'Melia, C.R., Becker, W.C. and Au, K.K. (1999) Removal of humic substances by coagulation, Water Sci. Tech., 40(9), pp. 47-54
  17. Reckhow, D.A. and Singer, P.C. (1984) The Removal of organic halide precursors by preozonation and alum coagulation, J. AWWA, 76(4), pp.151-157
  18. Siddiqui, M.S., Amy, G.L. and Murrhy, B.D. (1997) Ozone enhanced removal of natural organic matter from drinking water source, Water Res., 31, pp. 3098-3106 https://doi.org/10.1016/S0043-1354(97)00130-9
  19. Srivastava, R.M., Niemann, C.J. and Clark, M.M., (1990) Fast-hydrolysis kinetics of aluminum and the impact of mixing on product speciation, In proceeding of AWWA Annual Conference, Cincinnati
  20. Thurman, E.M. and Malcolm, RL. (1981) Preparative isolation of aquatic humic substances, Environ. Sci. Technol., 15, pp. 463-466 https://doi.org/10.1021/es00086a012
  21. USEPA (1995) Methods for the Determination of Organic Compounds in Drinking Water: Supplement 3. EPA600R95131, USA
  22. USEPA (1999) Enhanced coagulation, enhanced precipitative softening guidance manual: Office of Water (4607), EPA 815-R-99-012, USA