Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Chlorine Residual Prediction in Drinking Water Distribution System Using EPANET

EPANET을 이용한 상수도 관망의 잔류염소 거동 예측

  • 유희종 (인천광역시 상수도사업본부) ;
  • 김주원 (인천광역시 상수도사업본부) ;
  • 정효준 (한국원자력연구소 원자력환경연구부) ;
  • 이홍근 (서울대학교 환경보건학과)
  • Published : 2003.03.01
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Abstract

In this study, chlorine dose at water storage tank was predicted to meet the recommended guideline for free chlorine residual in drinking water distribution system, using EPANET which is a computer program that performs extended Period simulation of hydraulic and water quality behavior within pressurized pipe networks. The results may be summarized as follows. The decay of chlorine residual by season varied considerably in the following order; in summer ($25^{\circ}C$) > spring and fall (15$^{\circ}C$) > winter (5$^{\circ}C$). For re-chlorination at water storage tank by season, season-varying chlorine dose was required at its maximum of 1.00 mg/l in summer and minimum of 0.40 mg/l in winter as free chlorine residual. The decay of chlorine residual through out the networks increased with water age spent by a parcel of water in the network except for some points with low water demand. In conclusion, the season-varying chlorine dose as well as the monitoring of water quality parameters at the some points which showed high decay of chlorine residual may be necessary to deliver the safe drinking water.

Keywords

References

  1. National Academy of Science, Drinking water and health : Disinfectants and disinfection by-products. Washington. DC: National Academy Press, 25-33, 1987
  2. Simth, D. B., Hess, A. F. and Opheim, D. : Control of distribution system coliform regrowth, Proc. AWWA Water Quality Tech. Conf., Philadelphia, PA, AWWA, Denver, CO. 65-69, 1989
  3. Snead, M. C., Olivieri, V. P., Kawata, K. and Kruse, C. W. : The effectiveness of chlorine residuals in inactivation of bacteria and viruses introduced by post-treatment contamination. Water Res., 14, 403-411, 1980 https://doi.org/10.1016/0043-1354(80)90203-1
  4. 환경부, 상수도시설기준(유지관리편), 수도전에서의 음용수의 잔류염소. 1998
  5. Clark, T. F. : Chlorine-tolerant bacteria in water distribution system. Public Works, 115, 65-67, 1984
  6. Levi, Y. and Mallevialle, J. : Global Strategy and New Tools for Maintaining Water Quality in Distribution System, IWSA-APRSC on 'Safety of Water Supply in Transmission and Distribution System'. Shanghai, P.R. China, 100-108, 1996
  7. Clark, R. M. et al. : Water Quality Changes in a Simulated Distribution System. J. Water SRT-AQUA, 43(6), 263-277, 1994
  8. Rossma, L. A. : EPANET User Manual, Risk Reduction Eng. Lab., U. S Envir. Protection agency(EPA), Cincinnati, Ohio, 1994
  9. 최재호, 왕창근 : EPANET모델를 이용한 도시 상수도 관망에서의 수리 및 수질 Simulation, 대한환경공학회지, 19(7), 915-928, 1997
  10. American Water Works Association, Characterization and Modeling of Chlorine Decay in Distribution Systems, 1999
  11. Rossma, L. A., Clark, R. M. and Grayman, W. M. : Modeling Chlorine Residuals in Drinking-Water Distribution Systems. J. Environmental Engineering, 120(4), 803-820, 1994 https://doi.org/10.1061/(ASCE)0733-9372(1994)120:4(803)
  12. Wayne, W., Sharp, J. P. and Morgan, M. : In-situ chlorine decay testing, Proc. AWWARF/EPA Conf. on Water Quality Modeling in Distribution System', Cincinnati. OH, Feb. 45-50, 1991
  13. 인천광역시 상수도사업본부 : 수도정비 기본계획 보고서. 277-287, 1998