• 전자통신동향분석
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• 제37권4호
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• pp.28-35
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• 2022

To solve the challenge of waste plastics, this study investigated the related technologies and company trends along the plastic life cycle, and primarily describes ICT technologies to improve efficiency in the process of sorting and sorting waste plastics. Waste plastic discharge caused by the explosive increase in parcel traffic because of COVID-19 is also growing exponentially. Hence, waste treatment is emerging as a social challenge. Most of the domestic waste classification depends on the manual process according to the waste pollution level. The plastic material classification approach using the spectroscopy approach reveals a high error in the contaminated waste plastic classification, but if the Artificial Intelligence-based image classification technology is employed together, the classification precision can be enhanced because of the type of waste plastic product and the contaminated part can be differentiated.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2018년도 춘계학술논문요약집
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• pp.331-332
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• 2018

• Journal of information and communication convergence engineering
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• 제9권4호
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• pp.375-378
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• 2011

This study is intended to realize an intelligent controller using fuzzy control algorithms in order to recycle energy by recycling the waste water heat discharged by waste water heat collection boilers. Using waste water inflow temperature changes and waste water inflow amount changes as parameters, we present characteristic curves of the number of compressors being operated at fixed speeds and the temperature of hot water being discharged. We propose an intelligent controller that determines the optimum number of compressors being operated at fixed speeds in real time by measuring changes in the temperature and amount of waste water inflows in order to minimize the number of compressors being operated at fixed speeds relative to the waste water load flowing into the waste water heat collection boiler.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.59-64
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• 2001

On July 5, 1997, environmental Protection Administration of Taiwan publicized the recycling regulation of waste home appliances that include four items, namely, television, refrigerator, washing machine, and air conditioner. It is believed that this regulation pioneers the law enforcement of waste home appliances in the world. To comply with tile policy, several contemporary waste disposal plants specialized in waste home appliances were established according to a follow-up technical specification oil the waste treatment facilities and methodology. Therefore, the traditional dismantling facilities were substituted and waste collection routes were altered as well accordingly. This study investigates the collection and recycling costs of waste home appliances in accordance with these newly established routes and facilities, respectively. Cost survey was conducted among collectors and recycling plants of waste home appliances; consequently, tire collection and recycling costs were analyzed, correspondingly. Results show that the recycling costs of waste home appliances were much higher than that of other waste items. Since the market share of recycled materials is lacking, these waste recycling plants of home appliances can only survive under the subsidy of EPA in Taiwan. Due to some arduous problems, the subsidiary system has already caused serious financial unbalance for a foundation under EPA of Taiwan, which associated with waste recycling in Taiwan.

• 자원리싸이클링
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• 제22권4호
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• pp.12-21
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• 2013

E-waste(폐전기전자기기, WEEE)는 많은 종류의 금속을 함유한 유가물과 유해물의 복합혼합물로 자원의 유효이용과 환경부하저감을 위해 리싸이클링 처리가 필수로 되어 있다. 특히 최근 레어메탈의 공급제약문제 등으로 도시광산자원 중에서 E-waste의 비중이 높아지고 있다. 한편, E-waste의 리싸이클링산업에 있어서 E-waste의 경제적 가치의 파악은 매우 중요하다. 이와 같은 관점에서 본보에서는 E-waste를 대형가전, 소형가전, 휴대전화기 및 PCB(전자인쇄회로기판, 기판)로 분류해서 경제적 가치를 논하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.80-83
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• 2001

According to the EPA in Taiwan report, 9.05 million metric tons of solid wastes were generated in 1999, and the waste glass was accounted of 4.95 percent. However, with the increasing tonnage of disposal cost and existing disposal sites are reaching full capacity, recycling is currently accepted as a sustainable approach to waste management. Therefore, it's essential and urgent that the government in Taiwan establish the recycling and recovery framework for the minimization of the solid waste, reduction of materials and energy consumption, and the encouragement for the reuse, recycle and recovery development. To achieve this Boal, Taiwan has been strived for a long period of time in waste glass recovery and recycle. Waste glass, unlike other kinds of resource waste, is 100% recyclable. The EPA in Taiwan now center on a lot of different kinds of waste glass, such as glass container, flat glass, CRT glass, windshields glass, fluorescent lamps, and waste pesticide glass container. This article will focus on the framework of the recycling market access, and also try to provide some strategies to improve waste glass recycling efficiently.

• 한국산업보건학회지
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• 제34권2호
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• pp.107-114
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• 2024

Objectives: This study was performed to evaluate the musculoskeletal symptoms of workers treating electronics industry waste at a recycling sorting plant by case survey. Methods: The musculoskeletal symptoms were investigated by conducting a survey targeting workers treating waste from the electronics industry. Through utilizing the ergonomic evaluation techniques such as RULA, REBA, and OWAS, the four tasks were divided into three detailed processes (sorting, movement, loading) and the work of workers was evaluated for a total of 12 processes. Results: As a result of the questionnaire survey on musculoskeletal symptom, 40% of workers answered that they had musculoskeletal disease symptoms, and the symptom sites were hands(30%), legs(20%), arms(10%), and shoulders(5%). Based on the results obtained from analysis through ergonomic evaluation techniques such as RULA, REBA, and OWAS, 75% of them were found to need improvement or follow-up immediately or immediately after the second stage or higher. As compared to REBA and OWAS, the RULA, which evaluates the upper limb in detail, has a higher score, and in the process of sorting and loading relatively light wastes such as paper and plastic, the waist is raised by repeating the work of bowing and stretching. Conclusions: The heavy wastes such as 200L drums were evaluated as having a low load on the elbows and wrists because body action was relatively lower than moving paper and plastic. In addition, the overall load score was evaluated lower in the moving work compared to the sorting or loading process.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.236-239
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• 2001

In this study, the compound materials of GRT/plastics (HDPE, LLDPE, LDPE, PP and PS) were developed. Their tensile strength, strain at yield and flexural modulus according to the change in CRT content were measured. And, the physical properties of the compound materials that the GRT content was changed in the waste vinyl HDPE and pure HDPE were measured, compared and analyzed. If tile GRT is added to PE plastics, the physical properties were superior to those of PP and PS, and in the case of HDPE, the waste vinyl HDPE had superior physical properties by the GRT content to the pure HDPE.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.755-758
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• 2001

Most of the waste plastics are incinerated and landfilled now, leading to much environmental problems. The technology of injection into the blast furnace was developed as a useful recycling method of waste plastics, and applied to the actual operation in several ironmaking companies. We carried out the test operation to inject continuously the two kinds of waste plastics through four tuyeres of the Foundry blast furnace in POSCO by 130 ton of total amount. From this test operation, we analyzed the coke replacement ratio, the permeability, the heat load and other changes of furnace conditions with the injection of waste plastics into the blast furnace. Some trials based upon the theoretical approaches were applied to examine the efficiencies of blast furnace.

• 유기물자원화
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• 제5권1호
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• pp.33-42
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• 1997

음식쓰레기의 처리가 사회적인 문제로 대두되기 시작한 지도 얼마되지 않았다. 하지만 이의 처리방법에 대해서는 여러해 전부터 많은 논란을 일으켜 온 것이 사실이다. 현재 국내 및 일본에서 크게 관심을 가지고 있는 처리방식으로는 음식쓰레기를 고온으로 건조시키는 방법과 일정량의 담체 (수분조정제)를 반응조의 내부에 담아 놓고 일정기간동안 계속적으로 투입하면서 미생물에 의한 분해가 일어날 수 있도록 하는 소멸방식이 있다. 본 연구실에서는 위의 두가지 방식 중 소멸형의 잔반처리기에 관심을 가지고 이의 효율적인 음식물 분해를 위한 조건설정에 대해 실험을 진행하게 되었고 일차적으로 음식물이 투입되고 난후 미생물과의 직접적인 접촉을 이루어지게 하는 수분조정제를 개발하기 위한 실험을 진행하게 되었다. 이를 위해 수분조정제로 쓰일 물질의 선정과 초기 미생물의 성장을 극대화시킬 수 있는 물질의 첨가에 의한 개선, 탈취 흡착제의 첨가에 의한 반응시 발생하는 악취의 농도 변화 등에 대해 실험을 진행하게 되었고, 이에 대한 양호한 결과를 얻게 되었다.