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Identifying Cost and Benefit Items of Investment Projects to Offer New Public Services By the Use of Food Waste Disposers and the Direct Input of Feces in Sewers

주방오물분쇄기 사용 및 수세분뇨의 직투입에 따른 「새로운 공공하수도 서비스」제공을 위한 투자사업의 비용과 편익 항목 식별

  • Oh, Hyun-Taek (Division of Business Administration, Cheongju University) ;
  • Park, Kyoo-Hong (Department of Civil & Environmental Engineering, Chung-Ang University) ;
  • Kim, Sung Tai (Department of Economics, Cheongju University) ;
  • Lim, Byung In (Department of Economics, Chungbuk National University)
  • Received : 2020.04.10
  • Accepted : 2020.05.20
  • Published : 2020.05.28

Abstract

Our study identifies a cost and a benefit incurred in implementing an investment project to offer new public services by use of food waste disposers and direct input of feces in sewers. This is done with identifying costs of each processing division and benefits of the project by objective statistical data and engineering perspective. In summary, cost items identified are as follows: there are house laterals, removal of septic tanks, etc. for sewer pipes system. As to water quality conservation, cost incurs in storm water outfalls and divert chambers, sewage storage tanks, equipment to treat sewer overflows, and so on. With respect to sewage treatment plants(STPs), there are so many items as increase of contaminant loads in influent of STPs, and other items. There are benefit items in health improvement due to odor mitigation, increase of energy productivity, saving cost of food waste treatment and cleaning septic tanks, etc. These estimates will be used as a basic data for its economic effect.

본 연구에서는 정화조 폐기와 주방용오물분쇄기 사용으로 수세분뇨와 음식물찌꺼기가 공공하수관로에 직접 투입되는 「새로운 공공서비스사업」(이하 사업)시행과정에서 발생하는 비용과 편익을 식별, 제시한다. 본 연구는 기존 문헌과 공학적인 관점에서 사업시행 과정에서 처리분구(소구역)별 소요비용과 사업 완료 이후 편익을 객관적인 통계자료로서 식별, 제시하는 방식으로 수행한다. 비용과 편익을 식별한 결과, 비용항목들은 하수관로 시설(배수설비, 정화조 폐쇄·관로배치 변경 등), 수질보전(우수 토실·토구, 하수저류시설 등), 공공하수처리시설(침사지와 최초침전지, 고도처리시설 등) 등에서, 편익항목에는 악취제거로 인한 건강개선, 슬러지 처리효율 제고로 에너지 생산성 증가, 음식물쓰레기 처리비용과 정화조 처리 및 유지관리비용 절감, 기존 분뇨처리시설투자 축소 등이 식별되었다. 이상의 비용과 편익항목들은 향후 사업 시행 여부를 결정하는 경제성 분석의 기초 자료로 활용될 것이다.

Keywords

References

  1. Korea Institute of Civil Engineering and Building Technology. (2014). Development of Odor Control Technology and Policy Making in Sewer Pipe. Goyang : KICT.
  2. Oh. H, S. Kim, B. Lim, B. Kang & K. Park. (2019). A Case Study on Cost-Benefit Analysis of the Septic Tank and Exclusive Sewage Pipe Line in Designing the large Building at Combined Sewer District. Journal of Digital Convergence, 17(6), 169-175. DOI : 10.14400/JDC.2019.17.6.169
  3. Ministry of Environment. (2013). Notification 2013-179 Prohibition of Sale and Usage of Food Waste Disposer.
  4. Korea Association of Water and Wastewater. (2014). Summing-up of Operation of Certificate System of Food Waste Disposers.
  5. Seoul. (2019). Final Report on Sewerage Policy Forum.
  6. S. T Kim, B. I. Lim, H. T. Oh & K. H. Park (2019). An Analysis on Economic Effects of Smart Sewage Pipe. Journal of Convergence for Information Technology, 9(7), 78-84. DOI : 10.22156/CS4SMB.2019.9.7.078
  7. K. Park, S. Yu & T. Lee. (2019). Hydraulic Consideration to Improve the Tractive Force of Sewage in Sewer Pipes Using a Storage Tank. J. of KSWW, 33(2), 121-129.
  8. Seoul. (2018). Sewerage Rehabilitation Master Plan.
  9. Ministry of Environment. (2009). Feasibility Study to Introduce the Food Waste Disposers.
  10. Seoul Water Research Institute. (2015). Final Report on Sewerage Research.
  11. Ministry of Environment. (2010). Sewer Odor Measurement Manual.
  12. Ministry of Environment. (2003). Establishment of Guideline on Benefit-Cost Analysis on Environmental Policy.
  13. Ministry of Environment. (2019). Sewerage Statistics.