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


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.


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