Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Comparison of compost product quality with nature soil standard

국내생산퇴비의 부숙토 기준에 대한 적합성 검토

  • Choi, H.G. (Waste Resource and Recycling Division Waste Research Department National Institute of Environmental Research) ;
  • Lee, J.A. (Waste Resource and Recycling Division Waste Research Department National Institute of Environmental Research) ;
  • Kim, K.Y. (Waste Resource and Recycling Division Waste Research Department National Institute of Environmental Research) ;
  • Lee, K.C. (Waste Resource and Recycling Division Waste Research Department National Institute of Environmental Research) ;
  • Lee, J.G. (Chonnam Local Institute of Health Environment) ;
  • Park, K.H. (Chonnam Local Institute of Health Environment) ;
  • Park, J.S. (Seoul national university of technology) ;
  • Phae, C.G. (Seoul national university of technology)
  • 최훈근 (국립환경연구원 폐기물연구부) ;
  • 이재안 (국립환경연구원 폐기물연구부) ;
  • 김규연 (국립환경연구원 폐기물연구부) ;
  • 이길철 (국립환경연구원 폐기물연구부) ;
  • 이중기 (전남환경보건연구원) ;
  • 박귀환 (전남환경보건연구원) ;
  • 박정수 (서울산업대학교 환경공학과) ;
  • 배재근 (서울산업대학교 환경공학과)
  • Received : 2001.05.08
  • Accepted : 2001.06.05
  • Published : 2001.06.30
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Abstract

As construction and expansion of wastewater treatment works is continuing, generation of sludge is increasing. Bur most sludge is not used appropriately but disposed by landfill dumping to sea. Furthermore direct landfilling of sludge cake containing moisture content over 75% has been legally prohibited since 2001 that's enforcement will be more strict in 2003. Such a situation means nowadays recycling of organic waste such as sludge and food waste is necessary. Composting is one of recycling methods commonly and used as an effective means of stabilizing organic waste and then compost can be used as fertilizer. However fertilizer law management which include standard of compost products and other fertilizers applied all sludge products indiscriminiately and was not flexible. So MOE has graded organic composts according to land applications to improve recycle of organic wastes. The classified organic compost which contains low contaminants has been possible to use as various purpose. This study enalyzed 30 samples which were raw materials for compost and compost products management well and to estimate the quality of compost products. Heavy metals were measured in Raw materials and OM/N, NaCl and VS were tested in compost products as well as heavy metals. As a result, approximate 10% of raw materials was not suitable to the grade A and 6.7% over the grade B of the regulation on raw materials for compost. In the case of 30 produced compost propducts approximate, 57% of composts was not compatible with the grade A and B of the regulation on composting product. The qualities of compost products were worse than raw materials, because the compost products have more regulation item raw materials have.

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