• 한국폐기물자원순환학회지
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• 제35권8호
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• pp.785-798
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• 2018

Since the Framework Act on Resource Circulation was enacted in 2018, the government should establish a National Resource Circulation Master Plan every 10 years, which defines mid- to long-term policy goals and directions on the efficient use of resources, prevention of waste generation and recycling of waste. In addition, we must set mid- to long-term and stepwise targets for the final disposal rate, recycling rate (based on sorted recyclable materials and recycled products), and energy recovery rate of wastes, and relevant measures should be taken to achieve these targets. However, the current industrial waste (IW) statistics have limitations in setting these targets because the final disposal rate and recycling rate are calculated as the ratio of the recycling facility input to the IW generation. In this study, the material flow from the collection stage to the final disposal of industrial waste was analyzed based on the generation of 2016, and the actual recycling amount, actual incineration amount, final disposal amount and their rates were calculated. The effect on the recycling, incineration and final disposal rates was examined by changing the treatment method of nonhazardous wastes from the factory and construction and demolition wastes, which were put in landfills in 2016. In addition, the variation of the waste treatment charge was investigated according to the change of treatment methods. The results of this study are expected to be effectively used to establish the National Resource Circulation Master Plan and industrial waste management policy in the future in South Korea.

• 자원리싸이클링
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• 제23권2호
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• pp.26-36
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• 2014

기존 사례조사를 바탕으로 국내의 구리에 대한 물질흐름 분석을 Up-stream과 Down-stream으로 구분하여 실시하였으며, 2010년 기준 폐기물로 배출된 이후의 폐기 재활용 흐름에 대해서 현장조사를 통한 분석을 실시하였다. 배출 이후의 물질흐름을 배출 및 수입, 수거 및 폐기, 자원회수, 제품생산 및 수출의 4단계로 나누어 각 단계별로 분석했다. 재활용 단계에서 36.8%의 자원순환율 도출 되었고, 이를 바탕으로 각 단계별로 자원순환율을 증진시킬 수 있는 여러 방안을 제시하였다. 배출 및 수입 단계에서는 지정을 세분하여 적절한 경우 이를 폐기물 자원으로 분류할 것을 제안하였다. 이런 폐자원에 대해서 할당관세를 적용을 제안하였다. 수거 및 폐기 단계에서는 부과세 편취 해결과 입찰제도의 개선을 통한 수급 안정화 방안을 제시하였다. 자원순환단계에서는 전문적인 파쇄 및 분쇄 업체를 육성방안과 대기업과 중소기업간의 상생방안을 제시하였다. 제품생산 및 수출 단계에서는 현재 구리스크랩 재활용 상황에서 재활용 활성화를 위해서 폐기물 처리시설의 등록 면제 요청하고 있으나 이보다는 폐기물 처리시설로 등록을 위해서 필요한 모든 인허가를 통합적으로 처리하는 방안을 제시하였다.

• 자원리싸이클링
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• 제20권6호
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• pp.43-49
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• 2011

본 연구는 우리나라의 자원생산성(및 원재료 생산성), 물질순환이용율, 디커플링팩터 등의 3가지 지표를 산정하는 것을 통해 국내 경제활동과 자원소비간의 지속가능성을 평가하고 탈물질화 정도를 살펴보았다. 우리나라의 자원생산성은 2000년 1.32백만원/톤에서 2007년 1.61백만원/톤으로 22% 증가하였으며 2000년~2007년간 자원생산성 연평균증가율은 2.88%로 나타났다. 원재료물질투입량은 국내물질소비량(DMC)의 약 73%~76%를 차지하고 있으며, 원재료생산성은 2007년 2.11백만원/톤으로, 2000~2007년간의 연평균증가율은 3%로 나타났다. 배출된 폐기물은 재활용 및 에너지화를 통해 경제계로 순환되는데 국내 물질순환이용율은 2000년 10.9%에서 2007년 15.6%로 증가하였으며, 2000년부터 2007년까지 연평균 5.3% 수준으로 증가하였다. 그러나 전년대비 증가율의 변화율이 점차 감소하고 있는 추세로 나타났다. 또한 우리나라 경제활동과 자원소비량 간의 디커플링이 발생하여 탈물질화로 진행하고 있음을 확인할 수 있었다.

• 한국시스템다이내믹스연구
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• 제5권2호
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• pp.89-123
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• 2004

Using materials recovered from the waste stream instead of virgin resources as a raw material in manufacturing has great environmental and economic benefits. However, there is lack of public interest in needs for integrated waste management and its relevant facilities, because of NIMBY syndrome, This article has proposed a system dynamics model for the study of the potential and systemic consequences of resource circulation management system(RCMS) policy for a Sudokwon landfill site in Korea. The results of the study indicate that the effects of RCMS are seen continuously to increase in term with both the community welfare level and the resource and energy level. Moreover the effects of RCMS appear sharply in the first half of the simulation period.

• Journal of Animal Science and Technology
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• 제49권2호
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• pp.279-286
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• 2007

반응물을 연속적으로 내부 순환시키는 생물막 연속회분식모래여과 공정을 고안하고 외부 탄소원이 전혀 사용되지 않는 조건하에서의 돈사폐수 처리특성을 평가하였다. 수직형과 경사형 모래여과조에서의 NOx-N 부하량에 따른 탈질율은 각각 19%와 3.8%로 수직형에서 5배 정도 높은 효율을 보임에 따라 수직형태의 모래여과조를 생물막 연속회분식 공정과 연계하여 운전하였다. 처리공정을 HRT 15일, 내부순환율 105L/hr.m3, 평균 암모니아성 질소 부하량 54g/m3.d 조건에서 운전하였을 때 STOC, NH4- N, TN의 처리효율은 각각 75%, 97%, 85%이었다. 생물막 연속회분식 반응조와 모래여과조간의 내부순환으로 TN의 제거효율이 약 14%증진되는 것으로 나타났으며 얻어진 질소제거효율 증진은 주로 모래여과조에서의 탈질에 의한 것으로 밝혀졌다. 또한 용해성 인의 경우 내부순환이 수행되지 않았을 시에는 유출수내 농도가 오히려 증가하였으나 내부순환시에는 약 57% 정도가 제거되는 것으로 나타남에 따라 반응물의 내부순환이 용해성 인의 제거효율 증진에도 기여함을 알 수 있었다. 시스템에서의 질소제거 양상을 분석해본 결과 최종 유출수내의 NH4-N은 부하량 60g/m3.d 수준에서 약 20mg/L 이하로 비교적 일정하였고 부하량이 100g/m3.d. 이상의 수준으로 상승함에도 80% 이상의 질소 제거효율을 보였다. 그러나 부하량 100g/m3.d 수준 이상에서부터 처리효율이 감소하는 것으로 나타나 외부탄소원이 전혀 사용되지 않는 운전조건에서의 질소의 적정 부하량은 약 100g/m3.d 정도인 것으로 판단되었다.

• 디지털산업정보학회논문지
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• 제11권3호
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• pp.145-158
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• 2015

Disposable marine product packaging materials such as wooden, Styrofoam, and corrugated cardboard boxes have a very low reuse rate, thus causing the logistics costs to rise and making it difficult to establish a unit load system for marine products. Disposable packing containers to be discarded are accompanied by resource and environmental issues home and abroad. Transportation vehicles for marine products have to return empty without loading different kinds of products after delivery due to the smell and properties of marine products, thus posing as an obstacle to logistics rationalization. In an effort to overcome those limitations, this study examined the stages of transportation including "producer-wholesale market in the producing area-commission merchant-wholesale market in the consumption area-commission merchant-quasi-wholesale market-consumer" and also analyzed the utilization and distribution of disposable packaging materials currently used in the circulation of marine products including wooden, Styrofoam, and corrugated cardboard boxes. Based on the analysis results, the investigator developed a logistics rationalization model capable of promoting semi-permanent reuse and lowering empty vehicle rate on return routes as an alternative to address environmental issues caused by disposable packaging materials, which have been an obstacle to the logistics rationalization of marine products, packaging costs in the process of repeating packing and unpacking at each stage of marine products circulation, and empty vehicle rates on return routes after marine products delivery.

• 자원리싸이클링
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• 제24권2호
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• pp.69-78
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• 2015

자원수급의 불확실성이 점차 고조되고 있는 글로벌 상황에 능동적으로 대처하기 위해 전 세계적으로 효율적인 자원관리의 필요성이 증대되고 있다. 자원관리 선진국들은 국가차원에서의 지속가능한 자원관리를 유도 및 지원하기 위해 자원이용의 효율성을 극대화하기 위한 법제도 마련 및 산업구조로의 전환을 촉진하고 있다. 한편, 국내의 경우 자원수급과 관련하여 국제환경에 매우 민감한 산업구조를 나타냄에 따라 국가 주도의 자원효율성의 획기적인 제고 방안 마련이 절실히 요구된다. 특히 자원 전과정에서의 자원의 효율적 이용을 위한 단계별 추구해야 할 방향과 구체적 실천방안에 대해 검토가 필요하다. 이에 본 연구에서는 자원 전과정을 크게 생산계와 순환계로 구분하고 이에 따른 단계별 국내 자원관리의 현황 및 문제점, 이를 개선하기 위한 방향성 및 구체적 실천방안을 제시하였다.

• 한국유기농업학회지
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• 제22권4호
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• pp.561-579
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• 2014

This research estimates the necessity of a better governance plan on the purpose of fulfillment energy recovery by building resource recycling system for biomass resources and waste resources that derive from agricultural and mountain village areas. The utilization of new renewable energy technology which uses waste and biomass sources diverse as variety of resources, collecting method, operator etc. and is structurally complicated the formation of policy is also very difficult. There is failure because of the problems which occurs from the policy led by government. Biomass Town Development Project should be made through the central government and the local government integrated support system and should be formed a consultative group in order to process the project mutually with these two department including the experts from the related areas. This consultative group, while government organizations carry out the hub function of strategic knowledge management, should carry out the control tower function to be able to be net working transfer the information with the cooperation of private and government so vitalize the communication area among the related actors. And to be able to increase the participation rate of the local people the consistent and various educations should be given so a smooth business promotion progress will be desired through the change of perception and coactive participation of people.

• 농업과학연구
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• 제47권1호
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• pp.19-28
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• 2020

This study proposed a simple estimation method for irrigation return flow from paddy fields using the water balance model. The merit of this method is applicability to other paddy fields irrigated from agricultural reservoirs due to the simplicity compared with the previous monitoring based estimation method. It was assumed that the unused amount of irrigation water was the return flow which included the quick and delayed return flows. The amount of irrigation supply from a reservoir was estimated from the reservoir water balance with the storage rate and runoff model. It was also assumed that the infiltration was the main source of the delayed return flow and that the other delayed return flow was neglected. In this study, the amount of reservoir inflow and water demand from paddy field are calculated on a daily basis, and irrigation supply was calculated on 10-day basis, taking into account the uncertainty of the model and the reliability of the data. The regression rate was calculated on a yearly basis, and yearly data was computed by accumulating daily and 10-day data, considering that the recirculating water circulation cycle was relatively long. The proposed method was applied to the paddy blocks of the Jamhong and Seosan agricultural reservoirs and the results were acceptable.

• 한국태양에너지학회 논문집
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• 제33권4호
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• pp.70-79
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• 2013

These day cities experience serious climatic changes due to environmental load caused by disturbance in the circulation systems of water resources and energy. As technological improvement to respond to various climatic changes and disasters are also requested in the field of construction, inter-disciplinary studies linked to the establishment of sustainable environmental control and energy systems is required in a consilient perspective. This study aims to infer correlations in the impact of environmental changes caused by rooftop greening system on the photovoltaic power generation efficiency through computer simulation in an integrated perspective. By doing so, it seeks to provide basic study for developing a photovoltaic system integrated with building revegetation that is sustainable in environmental and resource aspects. A simulation showed that, in the case of sunshine hours in June, the green surface indicated temperature lowering effects of $9.19^{\circ}C$ on average compared to the non-green surface and temperature was $9.81^{\circ}C$ lower. Due to such greening effects, at the highest sunlight timepoint in June, Pmpp improved 119W and heat loss rate dropped 7.8%.