• Title/Summary/Keyword: 재활용 폐기물

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A Study on the Institutional System for Efficient-Sustainable Recycling of Construction Wastes (지속가능한 건설폐기물 재활용 활성화제도 개선에 관한 연구)

  • Park, Chan-Hyuk;Chung, Jae-Chun
    • Journal of the Korea Organic Resources Recycling Association
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    • v.12 no.1
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    • pp.94-103
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    • 2004
  • The generation of construction waste has increased continuously in the recent years, becoming an important social issue. In this paper, the generation and treatment of construction waste in Korea was reviewed and a comparative analysis was performed between Korea and developed countries to suggest some efficient recycling strategies. The generation of construction waste has increased 4 times from 10 million ton/yr in 1996 to 40.3 million ton/yr in 2002. Of the construction waste generated in 2002, concrete debris waste occupied 60.4%. Approximately 14.5% of the construction waste is landfilled, 2,0% incinerated and 83.4% recycled, then the recycling rate might be relatively high. However, there is room for increasing landfill diversion. It is somewhat important to strenghten incentives for the outstanding recycling business. It is also needed to improve the recycled aggregate quality standard and impurity content standard. It is desirable to toughen the facility standard for the recycling aggregate business and the quality standard for the intermediate treatment business. Also, market for the intermediate product of the recycled aggregate should be activated. Finally, more recycling-oriented regulations governing the construction waste has to be developed with the efficient public education program.

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Recycling of Polyurethane Scraps (폴리우레탄 스크랩의 재활용)

  • Kim, Han-Na;Lee, Dai-Soo
    • Elastomers and Composites
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    • v.47 no.2
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    • pp.104-110
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    • 2012
  • Depending on the states of polyurethane scraps generated in the production sites of polyurethane or recycling center of polyurethane scraps, appropriate recycling technologies can be employed for the recycling of resources. In this study, recycling technologies for the polyurethane scraps were classified into physical recycling, chemical recycling, and energy recycling and reports in the literatures were discussed.

Recycling Apparatus of Organic Wastes by Direct Steam Heating (수증기 직접가열에 의한 유기성 폐기물 재활용장치)

  • Han, Doo-Hee
    • Proceedings of the KAIS Fall Conference
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    • 2007.05a
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    • pp.294-296
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    • 2007
  • 본 논문은 고온 고압 수증기를 활용한 유기성 폐기물의 가수분해현상과 이를 이용한 퇴비 등의 재활용 방안을 제시한다. 사료화의 경우는 3.27 기압 $135^{circ}C$ 전후의 포화수증기로 교반처리하여 영양소 파괴를 줄이고 멸균 및 가수분해가 일어나게 하여 소화가 잘되는 사료를 만들 수 있고, 퇴비화의 경우는 16기압. $200^{circ}C$ 전후의 포화수증기로 교반처리하여 가수분해, 산가수분해, 열분해 및 탄화가 일어나도록 하여 목초액과 활성탄을 함유한 보온성, 보비성 및 통기성이 양호한 퇴비를 만든다. 응축수는 액비로 사용가능하므로 완전 재활용이 가능하다.

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포장과 법률 - 자원의 절약과 재활용촉진에 관한 법률 시행령 ②

  • (사)한국포장협회
    • The monthly packaging world
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    • s.326
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    • pp.98-107
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    • 2020
  • 환경부(장관 조명래)는 중소기업의 폐기물부담금 감면제도를 연장하고 출고·수입 실적 미제출에 대한 과태료 기준을 마련한 '자원의 절약과 재활용촉진에 관한 법률(이하 자원재활용법) 시행령' 일부개정안이 4월 7일 국무회의에서 의결되어 4월 14일 공포했다고 밝혔다. 폐기물부담금 중소기업 감면제도는 공포 즉시 시행되고, 그 외 개정사항은 5월 27일에 시행됐다. 지난호에 이어서 '자원의 절약과 재활용촉진에 관한 법률 시행령'의 상세한 내용을 살펴보도록 한다.

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자원의 절약과 재활용촉진에 관한 법률 시행령 ①

  • (사)한국포장협회
    • The monthly packaging world
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    • s.325
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    • pp.101-107
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    • 2020
  • 환경부(장관 조명래)는 중소기업의 폐기물부담금 감면제도를 연장하고 출고·수입 실적 미제출에 대한 과태료 기준을 마련한 '자원의 절약과 재활용촉진에 관한 법률(이하 자원재활용법) 시행령' 일부개정안이 4월 7일 국무회의에서 의결되어 4월 14일 공포했다고 밝혔다. 폐기물부담금 중소기업 감면제도는 공포 즉시 시행되고, 그 외 개정사항은 5월 27일에 시행된다. 환경부는 이해관계자와 3차례 간담회를 통해 감면기간을 2021년 출고량까지 연장하되 감면대상을 연간 매출액 300억 원 미만 업체에서 200억 원 미만 업체로 축소하고 감면율도 매출 규모에 따라 10~30%p 하향조정하는 것으로합의했다. 다음에 '자원의 절약과 재활용촉진에 관한 법률 시행령'의 상세한 내용을 살펴보도록 한다.

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Study on the heavy metal stabilization by dosing of chelate on the bottom ash (소각재에서의 용출억제제를 이용한 중금속 안정화에 관한 연구)

  • Jang, Hyeon-Jong;Kim, Seong-Jung
    • Journal of the Korea Organic Resources Recycling Association
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    • v.17 no.4
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    • pp.81-90
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    • 2009
  • About 35 domestic incinerators are being operated currently. There is waste management policy to reuse waste efficiently and reduce waste through incineration which include reuse, recycling and energy recovery. However, there is a critical social issue that some heavy metals(Cu, Pb) were found in bottom ash from incineration of waste. After incineration, bottom ash is treated with chemicals to prevent second pollution of heavy metals from bottom ash and increase efficiency of heavy metal stabilization.

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Estimation of the Bulk Density for Recyclable Residential Wastes (폐기물 관리시설 설계를 위한 재활용성 생활폐기물의 겉보기밀도 평가에 관한 연구)

  • Kim, Byung-Tae;Kim, Myeong-Woon;Lee, Chang-Hae
    • Resources Recycling
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    • v.26 no.6
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    • pp.102-107
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    • 2017
  • To estimate the bulk density applying the composition rate for recyclable residential waste, the composition rates by volume and weight basis, the bulk densities of the separated and commingled wastes were investigated four times respectively for recyclable waste of 1,800 kg transported to waste recovery facility. The bulk densities for separated wastes were $379.0kg/m^3$ of glass bottles that is highest and metals, residues, others, cans, plastics in order. The composition rates for each separated waste were changed widely depending on either volume basis or weight basis. The composition rate by weight basis as 40.6% of the glass bottles, 32.6% of the plastics were changed to 60.2% of the plastics and 8.9% of the glass bottles in that by volume basis. The bulk density of the commingled wastes applying the composition rate by volume basis showed the similar value to the measured density than by weight basis. So it was estimated that the composition rate by volume basis was appropriate for determining the bulk density of the commingled recyclable wastes.

A Study on Landfill Reduction Possibility by Characteristics of Industrial Thermal Treatment Residues (사업장 열적처리 잔재물의 특성에 따른 매립저감 가능성 연구)

  • Lee, Suyoung;Kim, Kyuyeon;Jeon, Taewan;Shin, Sunkyoung
    • Journal of the Korea Organic Resources Recycling Association
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    • v.27 no.1
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    • pp.65-75
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    • 2019
  • The government is promoting recycling of waste resources through the enactment of Fundamental Law on Resource Circulation, the revision of the Wastes Control Act and zero-landfilling of untreated waste through improved processes such as recycling and diversification. As of 2015, the total amount of landfilled waste is 38,308 ton/day in Korea. The amount of landfilled waste from industrial sectors is 23,577 ton/day, accounting for 62 % of total landfilled waste. In the study, we investigated the characteristics of the thermal treatment residue among inorganic wastes and estimated the landfill reduction potential according to the relevant recycling criteria, which can go through recycling paths. As a result, it is estimated that about 5~42 % of the landfilled waste can be reduced in case mandatory recycling and landfill suppression policies such as recycling criteria for thermal processing residues and expansion of recycling obligation targets should be implemented. In order to minimize landfill disposal, it is necessary to expand the diversity of waste recycling type and the usage of recycled products.