Study on disinfection by-products formation according to kind of salt in on-site production

정수장 현장제조염소의 브로메이트와 클로레이트의 생성 특성연구

Min, Byungdae;Chung, Hyenmi;Kim, Taewook;Park, Juhyun

  • Received : 2015.08.21
  • Accepted : 2015.10.13
  • Published : 2015.10.15


Although disinfection in drinking water treatment plants provides a safer water supply by inactivating pathogenic microorganisms, harmful disinfection by-products may be formed. In this study, the disinfectant, chlorine, was produced on-site from the electrolysis of salt (NaCl), and the by-products of the disinfection process, bromate and chlorate, were analyzed. The provisional guideline levels for bromate and chlorate in drinking water are $10{\mu}g/L$ and $700{\mu}g/L$, in Korea, respectively. Bromide salt was detected at concentrations ranging from 6.0 ~ 622 mg/kg. Bromate and chlorate were detected at concentrations ranging from non-detect (ND) ~ 45.3mg/L and 40.5 ~ 1,202 mg/L, respectively. When comparing the bromide concentration in the salt to the bromate concentration in the chlorine produced by salt electrolysis, the correlation of bromide to bromate concentration was 0.870 (active chlorine concentration from on-site production: 0.6-0.8%, n=40). The correlation of bromate concentration in the chlorine produced to that in the treated water was 0.866.


On-site production of chlorine;Bromate;Bromide;Disinfection by-products;Liquid chlorine


  1. Cotruvo, J., Fawell, J. K., Giddings, M., Jackson, P., Magara, Y., Ohanian, E. (2005). Bromate in drinking water, World Health Organization.
  2. Elena, R., Petra, B., Danila, T., Paolo, L., Elisa, C., Gianni, A., Mark, J. N., guglielmina, F., Gabriella, A. (2012). Trihalomethanes, chlorite, chlorate in drinking water and risk of congenital anomalies: A population-based case-control study in Northern Italy, Environmental Research, 116, 66-73.
  3. Fang, J. Y. and Shang, C. (2012). Bromate formation from bromide oxidation by the UV/persulfate process, Environmental Science and Technology, 46, 8976-8983.
  4. Haag, W. R. and Hoigne, J. (1983). Ozonation of bromide-containing waters: kinetics of formation of hypobromous acid and bromate, Environmental Science and Technology, 17, 261-267.
  5. Hosseini, S. G., Pourmortazavi, S. M., Gholivand, K. (2009). Spectrophotometric determination of chlorate ions in drinking water, Desalination, 245, 298-305.
  6. Japan Salt Industry Association (2015). (July 7, 2015).
  7. Korn, C., Andrews, R. C., Escobar, M. D. (2002). Development of chlorine dioxide-related by-product models for drinking water treatment, Water Research, 36, 330-342.
  8. Ministry of Environment. (2014). Notification regarding drinking water quality monitoring operating items, Ministry of Environment Notification 2014-129.
  9. National Institute of Environmental Research. (2013). Standardization of chemicals and materials for water treatment and distribution, 11-1480523-001714-01.
  10. Pisarenko, A. N., Stanford, B. D., Quinones, O., Pacey, G. E., Gordon, G., Snyder, S. A. (2010). Rapid analysis of perchlorate, chlorate and bromate ion in concentrated sodium hypochlorite solutions, Analytica Chimica Acta, 659, 216-223.
  11. Rafaed, J. G. V., Leite, M. V. O. D., Hierro, J. M. H., Alfageme, S. D. C., Hernandez, C. G. (2010). Occurrence of bromate, chlorite and chlorate in drinking waters disinfected with hypochlorite reagents, Science of the Total Environment, 408, 2616-2620.
  12. Shane, A., Benjamin, D., Aleksey, N., Gilbert, G., Mari, A. (2009), Hypochlorite, American Water Works Association and Water Research Foundation,
  13. Stanford, B. D, Pisarenko, A. N., Snyder, S. A., Gordon, G. (2011). Perchlorate, bromate, and chlorate in hypochlorite solutions: Guidelines for utilities, American Water Works Association, 103, 1-13.
  14. Uyak, V. Toroz, I. (2007). Investigation of bromide ion effects on disinfection by-products formation and speciation in an Istanbul water supply, Journal of Hazardous Materials, 149, 445-451.
  15. von Gunten, U. and Pinkernell, U. (2000). Ozonation of bromide-containing drinking waters: a delicate balance between disinfection and bromate formation, Water Science and Technology, 41, 53-59.
  16. Yasushi, N., Hitomi, N., Akihiro, K., Tomio, S., Hiroshi, I. (1999). Quality of common Salt, The Japan Society of Cookery Science, 32, 1-12.
  17. Yu, Y. L., Cai, Y., Chen, M. L, Wang, J. H. (2013). Development of a miniature dielectric barrier discharge-optical emission spectrometric system for bromide and bromate screening in environmental water samples, Analytica Chimica Acta, 1-7.
  18. Zhang, T., Chen, W., Ma, J., Qiang, Z. (2008). Minimizing bromate formation with cerium dioxide during ozonation of bromide-containing water, Water Research, 42, 3651-3658.


Grant : 수돗물 2차 오염방지를 위한 배급수관망 부식성 관리 연구(Ⅱ)