DOI QR코드

DOI QR Code

Removal of residual ozone in drinking water treatment using hydrogen peroxide and sodium thiosulfate

과산화수소와 티오황산나트륨을 이용한 정수처리공정에서의 잔류오존 제거

Kwon, Minhwan;Kim, Seohee;Ahn, Yongtae;Jung, Youmi;Joe, Woo-Hyun;Lee, Kyunghyuk;Kang, Joon-Wun
권민환;김서희;안용태;정유미;조우현;이경혁;강준원

  • Received : 2015.06.03
  • Accepted : 2015.08.12
  • Published : 2015.08.15

Abstract

The aim of this study was to evaluate the chemical quenching system for residual ozone and to determine the operating condition for the quenching system. Hydrogen peroxide ($H_2O_2$) and sodium thiosulfate ($Na_2S_2O_3$) were investigated as quenching reagents for ozone removal, and the tendency of each chemical was notably different. In the case of $H_2O_2$, the degradation rate of ozone was increased as the concentration of $H_2O_2$ increase, and temperature and pH value have a significant effect on the degradation rate of ozone. On the other hand, the degradation rate of ozone was not affected by the concentration of $Na_2S_2O_3$, temperature and pH value, due to the high reactivity between the ${S_2O_3}^{2-}$ and ozone. This study evaluates the decomposition mechanism of ozone by $H_2O_2$ and $Na_2S_2O_3$ with consideration for the water quality and reaction time. Furthermore, the removal test for the quenching reagents, which can be remained after reaction with ozone, was conducted by GAC process.

Keywords

Hydrogen peroxide;Ozone process;Quenching;Residual ozone;Sodium thiosulfate

References

  1. Bader, H., Hoigne, J. (1981). Determination of ozone in water by the indigo method: a submitted standard method, Ozone Sci. Eng., 4, 169-176.
  2. Forni, L., Bahnemann, D., Hart, E.J. (1982). Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution, J. Phys. Chem., 86, 255 https://doi.org/10.1021/j100391a025
  3. Glaze, W.H., Kang, J., Chapin D.H. (1987). The chemistry of water treatment processes involving ozone, hydrogen peroxide and ultraviolet radiation, Ozone Sci. Eng., 9, 335-352 https://doi.org/10.1080/01919518708552148
  4. Jorgensen, B.B. (1990). A thiosulfate shunt in the sulfur cycle of marine sediments, Science, 249 (4965), 152-154 https://doi.org/10.1126/science.249.4965.152
  5. Keen, O.S., Dotson, A.D., Linden, K.G. (2013). Evaluation of Hydrogen Peroxide Chemical Quenching Agents following an Advanced Oxidation Process, J. Environ. Eng.-ASCE, 139, 137-140 https://doi.org/10.1061/(ASCE)EE.1943-7870.0000619
  6. Lopez-Ramon, M.V., Stoeckli, F., Moreno-Castilla, C., Carrasco-Marin, F. (2000). Specific and non-specific interactions of water molecules with carbon surfaces from immersion calorimetry. Carbon, 38(6), 825-829 https://doi.org/10.1016/S0008-6223(99)00181-5
  7. Mcadams, S.R., Koo, B., Jang, M., Lee, S. (2012). Use of hydrogen peroxide with ozone to simultaneously reduce MIB and quench ozone residual in existing water treatment plants sourcing water from the Han river, J. of Korean Soc. on Water Environ., 5(5), 704-716
  8. Naik, J.R., Bikshapathi, M., Singh, R.K., Sharma, A., Verma, N., Joshi, H.C. Srivastava, A. (2011). Preparation, surface functionalization, and characterization of carbon micro fibers for adsorption applications, Environ. Eng.-ASCE, 28(10), 725-733 https://doi.org/10.1089/ees.2010.0308
  9. Rey, A., Zazo, J.A., Casas, J.A., Bahamonde, A., Rodriguez, J.J. (2011). Influence of the structural and surface characteristics of activated carbon on the catalytic decomposition of hydrogen peroxide, Appl. Catal. A-Gen., 402(1-2), 146-155. https://doi.org/10.1016/j.apcata.2011.05.040
  10. Siu, T., Jia, C.Q. (1999). Kinetic and Mechanistic Study of Reaction between Sulfide and Sulfite in Aqueous Solution, Ind. Eng. Chem. Res., 38, 3812-3816. https://doi.org/10.1021/ie990254x
  11. Staehelin, J., Hoigne, J. (1982). Decomposition of ozone in water: rate of initiation by bydroxide ion and hydrogen peroxide, Environ. Sci. & Technol., 16, 676. https://doi.org/10.1021/es00104a009
  12. Weinhold B. (2008). Ozonnation: EPA standard panned by the people, Environ. Health Perspect., 116(7), 302-305. https://doi.org/10.1289/ehp.116-a302

Acknowledgement

Grant : 고도정수 처리시의 잔류오존 제거방안 연구

Supported by : 상수도공동연구협의회(7개 특.광역시 상수도사업본부, 제주특별자치도 수자원본부, K-water, 한국상하수도협회)