한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제36권5호
  • /
  • Pages.423-430
  • /
  • 2020
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  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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분류식 하수관로에서 유입수 표준매뉴얼 산정방법의 보수적 수정 결과

Conservative Adjustment of the Standard Calculation Method of Inflow Water Into a Separated Sewer System

  • Chu, Minkyeong (Korea Environment Corporation) ;
  • Bae, Hyokwan (Department of Civil and Environmental Engineering, Pusan National University)
  • 투고 : 2020.06.24
  • 심사 : 2020.08.28
  • 발행 : 2020.09.30
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초록

To improve the low treatment efficiency of sewage treatment plants, the separated sewer system must be maintained to provide an adequate flow rate and quality of the sewage under the effect of inflow. In this study, data from five locations of Namsuk, Dukgok1, Dukgok2, Kanggu, and Opo were used to conservatively calculate the inflow water volume. The sewer flow and rainfall data were collected in 2017. The factors in the standard method used to calculate the inflow of the combined sewer pipes including "rainy days", "rainfall impact period", and "period for basal sewer" were defined as 3 mm/day, continuous rain for two days, and two weeks prior to the inflow generation, respectively. "Rainy days", "rainfall impact period", and "period for basal sewer" were conservatively adjusted to 5 mm/day, continuous rain for five days, and three weeks prior to the inflow generation, respectively. As a results of the adjustment, the linearity (r2) was improved except for in Dukgok1. This implies that the conservative adjustment made in this study could improve the management quality of sewer pipes. Also, the linear correlation coefficient (ai) between inflow and rainfall showed a large difference between the target locations, which can be another monitoring factor affecting the quality of sewer pipes. To improve the correlation based on the individual characteristics of the locations in Korea, the automatic algorithm for the inflow calculation should be developed by innovative intellectual technologies for application to the entire national area.

키워드

참고문헌

  1. Choi, G. W., Kim, G. H., and Jun, Y. H. (2002). A study for estimation of infiltration/inflow in pipes, Proceedings of Korean Society of Civil Engineers, Korean Society of Civil Engineers, 57-60. [Korean Literature]
  2. Choi, J., Lee, Y., Lee, Y., and Lee, J. (2015). Evaluation of infiltration/inflow on separate sewer system in residence complex, Journal of Korean Society of Hazardous Mitigation, 15(3), 357-362. [Korean Literature] https://doi.org/10.9798/KOSHAM.2015.15.3.357
  3. Kim, H. J. and Park, K. H. (2010). Statistical methods for the use of infiltration and inflow as performance index in sewer rehabilitation works, Journal of Korean Society of Water and Wastewater, 24(5), 617-628. [Korean Literature]
  4. Kim, H., Shin, D., and Kim, Y. (2015). Evaluation of first flush rainfall inflow and pollution loads into manhole against combined and sanitary sewer overflows, Journal of Korean Society on Water Environment, 31(1), 67-70. [Korean Literature] https://doi.org/10.15681/KSWE.2015.31.1.67
  5. Kim, J. (2012). A study of water quality improvement due to installation of the separate sewer system, Master Dissertation, Seoul National University of Science and Technology [Korean Literature]
  6. Kim, J. O., Jeong, D. G., and An, D. H. (2014). A study on improvement of inflow/infiltration computation and application method in sewer rehabilitation project, Journal of Korean Society of Water and Wastewater, 28(1), 33-45. [Korean Literature] https://doi.org/10.11001/jksww.2014.28.1.33
  7. Korea Institute of S&T Evaluation and Planing (KISTEP). (2018). Water and sewage innovation technology development project, preliminary feasibility analysis. [Korean Literature]
  8. Kown, Y. S. (2005). Analysis of correlation between infiltration/inflow and defective rate of sewer, Master Dissertation, Kangwon National University [Korean Literature]
  9. Lee, J. (2007). Optimization for selecting sewer rehabilitation methods and estimation of the capacity of facility to control combined sewer overflows, Ph.D. Dissertation, Chung-ang University. [Korean Literature]
  10. Lee, J. H., Jun, H. D., Joo, J. G., and Kim, J. H. (2008). Development of a decision making model for efficient rehabilitation of sewer system, Journal of Korea Water Resources Association, 41(2), 127-135. [Korean Literature] https://doi.org/10.3741/JKWRA.2008.41.2.127
  11. Ministry of Environment (ME). (2009). Standard manual for calculation of infiltration and inflow water in sewer pipes, Ministry of Environment. [Korean Literature]
  12. Ministry of Environment (ME). (2013). Analysis of operation and management for public sewage treatment facilities in 2012, Ministry of Environment. [Korean Literature]
  13. Oh, J., Lee, J., and Jin, S. (2013). Queries for standard sewer infiltration/inflow assessment, Journal of Korean Society of Water and Wastewater, 27(2), 285-290. [Korean Literature]
  14. Shin, J., Han, S., Yook, J., Lee, C., and Kang, S. (2019). Effect of infiltration/inflow by rainfall for sewage facilities in the area with partially separated sewer system, Journal of Korean Society of Water and Wastewater, 33(3), 177-190. [Korean Literature] https://doi.org/10.11001/jksww.2019.33.3.177
  15. Wang, J. (2010). The application of standard method for estimating infiltration/inflow on sewer pipes, Master Dissertation, Chung-ang University [Korean Literature]