Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
권호 표지

Oxidation of Geosmin and 2-MIB in Water Using $O_3/H_2O_2$: Kinetic Evaluation

오존과 과산화수소를 이용한 Geosmin과 2-MIB 산화: 동력학적 평가

  • Lee, Hwa-Ja (Water Quality Research Institute, Waterworks Headquarter) ;
  • Son, Hee-Jong (Water Quality Research Institute, Waterworks Headquarter) ;
  • Roh, Jae-Soon (Water Quality Research Institute, Waterworks Headquarter) ;
  • Lee, Sang-Won (Water Quality Research Institute, Waterworks Headquarter) ;
  • Ji, Ki-Won (Water Quality Research Institute, Waterworks Headquarter) ;
  • Yoo, Pyung-Jong (Water Quality Research Institute, Waterworks Headquarter) ;
  • Kang, Lim-Seok (Department of Environmental Engineering, Pukyong National University)
  • 이화자 (부산광역시 상수도사업본부 수질연구소) ;
  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 노재순 (부산광역시 상수도사업본부 수질연구소) ;
  • 이상원 (부산광역시 상수도사업본부 수질연구소) ;
  • 지기원 (부산광역시 상수도사업본부 수질연구소) ;
  • 유평종 (부산광역시 상수도사업본부 수질연구소) ;
  • 강임석 (부경대학교 환경공학과)
  • Published : 2007.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

Unpleasant tastes and odors in drinking water cause same problems for water utilities across Korea. Even though tastes and odors do not create health problems, they are main concerns for consumers who determine the safety of their drinking water. In this study, two different odor producing compounds(geosmin 2-MIB) in the Nakdong river water and rapid sand filtered rater were treated by advanced oxidation of $O_3/H_2O_2$ process. The experimental results showed that the removal efficiency of geosmin with the use of 5 mg/L of $O_3$ and $H_2O_2$ was higher than efficiency with the use of $O_3$ alone for both the raw water and the sand filtered water. And in general, the removal efficiency of geosmin was higher than 2-MIB in the sand filtered water. Under the range of $O_3$ concentration $0.5\sim2.0$ mg/L, the removal rate constants(k) of geosmin for the raw and sand filtered waters, and the one of 2-MIB in the sand filtered water were increased rapidly as doses of $O_3$, and $H_2O_2$, increased. The removal rate constants(k) do not increase any more when $H_2O_2/O_3$ ratio increases above the optimum ratio. The optimum ratio of $H_2O_2/O_3$, dose was $1.0\sim2.0$ for both geosmin and 2-MIB. The removal rate constant(k) becomes lower when OH radical consuming materials are present in raw water. The half-life of geosmin decreased rapidly as the $O_3$ and $H_2O_2$ doses increase in the sand filtered water. The half life decreased about 8.5 times with the use of 2 mg/L of $O_3$ and 10 mg/L of $H_2O_2$ than with the use of 2 mg/L of $O_3$ alone for the sand filtered water.

수돗물내의 불쾌한 이취미는 수도사업자에게 여러 가지 문제를 일으킨다. 비록 이취미는 건강상에 유해하지는 않지만 소비자들에게 수돗물의 안정성을 의심하게 되는 주된 요인이 되고 있다. 본 연구에서는 낙동강 원수와 급속 모래여과 처리수에 함유된 geosmin에 대한 오존과 오존/과산화수소 공정에서 접촉시간별 제거경향을 조사한 결과, 오존 단독공정에 비하여 오존과 과산화수소 혼합공정이 오존 단독공정 보다 접촉시간별로 geosmin 제거율이 월등히 증가하였다. 오존과 과산화수소 투입농도에 따른 여과수 중의 geosmin과 2-MIB의 제거특성 평가에서 2-MIB 보다 geosmin이 오존 및 오존/과산화수소 공정에서 제거가 용이한 것으로 나타났다. 원수 및 여과수에 함유된 geosmin과 여과수에 함유된 2-MIB에 대해 오존 주입농도 $0.5\sim2.0$ mg/L 범위에서 오존과 과산화수소 주입비율 $(H_2O_2/O_3)$에 따른 각각의 반응 속도상수 k의 변화를 조사한 결과, 오존 및 오존과 과산화수소의 주입비율이 증가할수록 반응 속도상수 k가 급격히 증가하였으며 오존과 과산화수소의 주입비율이 어느 한계 이상에 도달하면 반응 속도상수 k는 더 이상 증가하지 않는 것으로 나타났다. 따라서 오존 주입농도 $0.5\sim2.0$ mg/L 범위에서 오존 대비 과산화수소의 적정 주입비율($(H_2O_2/O_3)$ $1\sim2$ 사이인 것으로 나타났다. 급속 모래여과 처리수에서 보다는 오존과 OH 라디칼 소비물질이 많이 존재하는 원수에서의 반응속도 상수가 더 낮은 것으로 나타났다. 호존 주입농도별로 과산화수소 주입농도에 대한 급속 모래여과 처리수중의 geosmin이 제거되는 반감기를 조사한 결과, 오존과 과산화수소 주입농도가 증가할수록 geosmin의 반감기는 급격히 줄어들었으며, 오존만 2 mg/L 주입하여 geosmin을 산화시킨 경우보다 오존 2 mg/L와 과산화수소 10 mg/L를 함께 주입한 경우 반감기가 38.9분에서 4.6분으로 8.5배 정도 감소되는 것으로 나타났다.

Keywords

References

  1. Suffet, I. H., Mallevialle, J., and Kawczynski, E., Advances in Taste-and-Ordor Treatment and Control, AWWARF, Denver, Colorado(1995)
  2. Suffet, I. H., Corado, A., Chou, D., McGuire, M. J., and Butterworth, S., 'AWWA taste and odor survey,' J. AWWA., 88, 168-180(1996) https://doi.org/10.1002/j.1551-8833.1996.tb06542.x
  3. Gerber, N. N. and LeChavalier, H. A., 'Geosmin, an earthy-smelling substance isolated from actinomycetes,' Applic. Microbiol., 13, 935(1965)
  4. Rosen, A. A., Mashni, C. I., and Safferman, R. S., 'Recent developments in the chemistry of odor in water: the cause of earthy/musty odor,' Water Treat. Examin., 19, 106(1970)
  5. Meng, A. K. and Suffet, I. H., 'A procedure for correlation of chemical and sensory data in drinking water samples by principal component factor analysis,' Environ. Sci. Technol., 31, 337-345(1997) https://doi.org/10.1021/es950776d
  6. Rashash, D. M. C., Dietrich, A. M., and Hoehn, R. C., 'FPA of selected odorous compounds,' J. AWWA., 89, 131-141(1997) https://doi.org/10.1002/j.1551-8833.1997.tb08213.x
  7. Lalezary, S., Pirbazari, M., and McGuire, M. J., 'Evaluating activated carbons for removing low concentrations of taste-producing and odor-producing organics,' J. AWWA., 78(11), 76-82(1986)
  8. Wnorowski, A. U., 'Tastes and odors in the aquatic environment: a review,' Water SA., 18(3), 203-214(1992)
  9. Lundgren, B. V., Grimvall, A., and Savenhed, R., 'Formation and removal of off-flavor compounds during ozonation and filtration through biologically-active sand filters,' Water Sci. Technol., 20, 245-253(1988)
  10. Bruce, D., Westerhoff, P., and Brawley-Chesworth, A., 'Removal of MIB and geosmin in surface water treatment plants in Arizona,' J. Water Supply: AQUA, 51, 183-197(2002) https://doi.org/10.2166/aqua.2002.0016
  11. Atasi, K. Z., Chen, T., Huddleston, J. I., Young, C. C., and Suffet, I. H., 'Factor screening for ozonating the taste and odor causing compounds in source water at Detroit, USA,' Water Sci. Technol., 40(6), 115-122(1999)
  12. Balcloglu Akmehmet, I. and Otker, M., 'Treatment of pharmaceutical wastewater containing antibiotics by $O_{3}$ and $O_{3}/H_{2}O_{2}$ processes,' Chemosphere, 50, 85-95(2003) https://doi.org/10.1016/S0045-6535(02)00534-9
  13. Suh, J. H. and Mohseni, M., 'A study on the relationship between biodegradability enhancement and oxidation of 1,4-dioxane using ozone and hydrogen peroxide,' Water Res., 38, 2596-2604(2004) https://doi.org/10.1016/j.watres.2004.03.002
  14. Langlais, B., Reckhow, D. A., and Brink, D. R., Ozone in Water Treatment: Application and Engineering, 2nd ed., Lewis Publisher, Michigan, pp. 13-23(1991)
  15. Gulyas, H., von Bismarck, R., Hemmerling, L., 'Treatment of industrial wastewaters with ozone/hydrogen peroxide,' Water Sci. Technol., 32(7), 127-134(1995)
  16. Wang, F., Smith, D. W., and Gamal El-Din, M., 'Aged raw landfill leachate: membrane fractionation, $O_{3}$ only and $O_{3}/H_{2}O_{2}$ oxidation, and molecular size distribution analysis,' Water Res., 40, 463-474(2006) https://doi.org/10.1016/j.watres.2005.11.038
  17. Baus, C., Sona, M., and Brauch, H. J., 'Ozonation and combined ozone/$H_{2}O_{2}$, UV/ozone and UV/$H_{2}O_{2}$, for treatment of fuel oxygenates MTBE, ETBE, TAME and DIPE from water,' Proceedings of 4th IWA Oxidation Technology Conference for Water and Wastewater Treatment, 15-17 May, Goslar, Germany(2006)
  18. Benjits, T., Vercarnmen, J., Dams, R., Lambert, W., and Sandra, P., 'Stir bar sorptive extraction-thermal desorption-capillary gas chromatography-mass spectrometry applied to the analysis of polychlorinated biphenyls in human sperm,' J. Chromatography B, 755, 137-142(2001) https://doi.org/10.1016/S0378-4347(01)00048-2
  19. Masten, S. J., Galbraith, M. J., and Davies, S. H., 'Oxidation of trichlorobenzene using advanced oxidation processes,' Ozone Sci. Eng., 18, 535-548(1996) https://doi.org/10.1080/01919512.1997.10382862
  20. Ho, L., Croue, J. P., and Newcombe, G., 'The effect of water quality and NOM character on the ozonation of MIB and geosmin,' Water Sci. Technol., 49(9), 249-255(2004)
  21. 손희종, '회전 드럼형 광촉매 산화장치를 이용한 비스페놀-A 제거,' 한국화학공학회지, 39(4), 493-500(2001)