DOI QR코드

DOI QR Code

Investigation on Sorting Efficiency for Recyclable Materials and Its Improvement Measure at Domestic Sorting Facility

국내 재활용품 선별시설에서 선별 현황 및 개선방안

  • Kim, Joo-Sin (Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
  • Pak, Daewon (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
  • 김주신 (서울과학기술대학교 에너지환경대학원 에너지환경공학과) ;
  • 박대원 (서울과학기술대학교 에너지환경대학원 에너지환경공학과)
  • Received : 2017.04.07
  • Accepted : 2017.04.28
  • Published : 2017.06.30

Abstract

This study was conducted to investigate and analyze the discharge characteristics of recyclable material from S-city, S-district, in order to improve the sorting efficiency in recycling sorting facility. The characteristics of recyclable materials collected were analyzed in three different scopes; source origin, collection and transportation, and sorting steps. The average of recyclable waste generation is $0.121kg/day^*man$. Regional collection period appears to be three times a week, and the density of mixed recyclable wastes showed the average of $202.4kg/m^3$ in the waste collection vehicle. In the analysis into the sorting steps, the average of carrying amount of mixed recycling products is 1,154.6 ton/month, the average of appeared density is $181kg/m^3$, the average amount of separated recycling products is 448.5kg/month, and the density of recycling residue is found out to be $48kg/m^3$. The sorting rate of recyclable material is 38.85% and the percentage of residues is 55.90%. Out of 7,744.8 tons of the total recyclable residues, 4,272.1 tons were found out to be possible recylable materials. As a result of increasing the recycling rate of residues, the encouragement of base-recycling, the automation and retrofit of sorting equipment, and energy recovery from recycling residue were discussed.

References

  1. Ministry of Environment, "2015 Waste Treatment Facility Installation and Operation Status Report". (2016).
  2. Korea Zero Waste Movement Network, "A manual for the operation and management of the recycling materials collection hall of the local government". (2009).
  3. Ministry of the Interior, "Resident registration Statistics", Ministry of The Interior. (2014).
  4. Ministry of Environment, "Waste Statistics Survey", Ministry of Environment. (2013).
  5. K-eco, "The 4th national waste statistics survey design study". (2011).
  6. Yeon, K. S., "Evaluation and Improvement of Material Recovery Facilities for Source Separated Recyclable Wastes", University of Seoul, Master's Dissertation in Korea. (2004).
  7. Jeon, D. R. et al., "Extension Measures of Separate Collection on Recyclable Materials in Domestic Waste", Journal of Environmental Policy and Administration. (2011).
  8. Joao, T. et al., "Recyclable waste collection planning - a case study", European Journal of Operational Research. (2004).
  9. Choi, W. J. et al., "A Study on Physical Properties of Recyclables obtained from MSW", Journal of The Korean Institute of Resources Recycling. (2012).
  10. Ciprian, C. et al., "Central sorting and recovery of MSW recyclable materials: A review of technological state-of-the-art, cases, practice and implications for materials recycling", Journal of Environment Management. (2015).
  11. Sathish P. G. et al., "A review on automated sorting of source-separated municipal solid waste for recycling", Waste Management. (2016).
  12. Martina M. et al., "Implementing an advanced waste separation step in an MBT plant: assessment of technical, economic and environmental impacts", Waste Management & Research. (2013).
  13. Yusuke, H. et al., "Sensing performance of dielectric sensor in mixed melting polymer pellets for waste plastic separation", Advanced Powder Technology. (2015).
  14. Giuseppe B. et al., "Gravity packaging final waste recovery based on gravity saparation and chemical imaging control, Waste Management. (2016).
  15. Kim, H. Y. et al., "The Present Status and Suggestions for Waste Recycling and Reuse", Journal of Nakdong River Environmental Research Institute. (2012).
  16. Oh, J. I. et al., "Realization of Zero Waste Clean City to Low Carbon Green Growth", Journal of Korea Society of Environmental Engineers. (2010).
  17. Shin, T.-S. et al., "Feasibility Evaluation of Co-Incineration with MSW for Efficient Recycling of the Rejects after Separation Processes in MRF", Journal of Korea Society of Environmental Engineers. (2011).
  18. Jun H., "Suitable Methods of Waste Separation", Advanced Materials Research. (2013).