• Journal of the Korea Organic Resources Recycling Association
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• v.10 no.3
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• pp.92-97
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• 2002

This study is to analyze collection factor of food wastes using GIS. For calculation of collection crews and equipment, It was measured velocity(43m/min), moving coefficient(1.9), moving distance(17,200/day), collection rate(0.313kg/day) on the basis of S2Dong. Moving coefficient was able to analyze straight distance of S2Dong using GIS and other areas were also applied to analyze straight distance of each area using same method. At N autonomous district, 10 persons of collection crews were necessary, but collection of food wastes by four forces resulted to be 11 persons of crews necessary. 7 vehicles were necessary, but 8 vehicles were needed by same reason.

• The Journal of the Korea institute of electronic communication sciences
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• v.5 no.5
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• pp.487-492
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• 2010

In this study, our system that the volume of collected human waste in the septic tank truck is measured accurately and the fee of disposing human waste can be calculated by using measured results has been developed. The level sensor and its circuits which can measure the height of the tank, the hand-held system that can be used by workers easily and simply with micro-controller have been developed. Also, this system has been built in the receipt printing function to charge for disposal fee. Even when working on a sloping field, this system can measure the accurate collected volume of human waste in the tank using the X-Y axis angle sensor. The results of this study expect that the popular complaints that generated from human waste can be reduced, the exportation possibility of our specialized systems can acquire foreign currency.

• Journal of Korean Society of Environmental Engineers
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• v.39 no.4
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• pp.194-200
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• 2017

On-site Algae Collecting System (OACS) is one of urgent countermeasures to clean the raw water when the algae blooms severely. Rapid reaction capability, high efficiency and large capacity are required when applying OACS to large water areas. The total performance of OACS are always determined by unit process named Flotation, Trapping and Collection. The working efficiency and daily treatment quantity of OACS can be increased when it runs automatically. As the rapid development of OACS technology, in the first place, equipment are miniaturized and simple. And in the second place, automation process from Trapping to Collection are advanced. So, They produce results higher working efficiency, smaller residual sludge on treated water, system's advanced environmental friendly features and the increased amount of sludge by Collection process to achieve large capacity. Now OACS has overcome the algae multiplication rate to ensured the amount of removal algae. In another aspect, it is high economically feasible because of reducing operation cost against the large capacity.

• Journal of the Korean Society for Marine Environment & Energy
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• v.10 no.3
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• pp.148-154
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• 2007

This study investigated the spatial distribution of the marine debris in Jinudo in the Nakdong river estuary. Types of marine debris in Jinudo are analyzed through sampling around some portion of its sandbar shoreline. The present study and its main results are summarized as follow: 1) Monitoring system, for evaluating the volume of marine debris, was established in the coastal region of $50\;m\;{\times}\;50\;m\;(=0.002\;km^2)$ over the southern part of Jinudo. All the marine debris of conceivable form are collected and their amount was also estimated. 2) During the $1^{st}$ collection in May 2007, the total weight of the marine debris was 1,110 kg in this site, which means the density of marine debris around the shoreline is $444\;ton/km^2$. After one month later, the collected marine debris was 23.75 kg and so we have the average density of $9.5\;ton/km^2$. From these results, it is suggested that the marine debris of 316.67kg was being accumulated per day over unit area($1\;km^2$). 3) The most frequent marine debris collected during monitoring campaigns was wooden material amounting to 85.86% of the whole collection; the rest were fishing gears such as nets and buoys(5.13%), household waste(2.34%), glass(0.94%) and metals(0.27%).

• Environmental and Resource Economics Review
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• v.24 no.4
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• pp.747-761
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• 2015

This paper investigates the impact of an increase in unit price of solid waste collection on demand for alternative solid waste disposal types. I control for other variables affecting the demand and employ both community and time fixed effects models in the estimation of each reduced-form demand functions. Estimation results show that an increase in unit price reduces the demand for garbage bag collection services of non-food solid wastes while it increases the demand for food wastes and source-separated recyclables. These results imply that reduction in the demand for non-food solid wastes collection is mainly achieved by increasing the amount of recyclables and food wastes collected. However, it appears that an increase in unit price increases the total amount of solid wastes generated. This suggests that price incentive effects are offset by the decrease in source-reduction efforts because of feedback effects resulting from the increase in recycling, food waste separation, and illegal disposal of wastes.

• Spatial Information Research
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• v.9 no.1
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• pp.15-30
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• 2001

Solid waste collection service is viewed as one of the most important public services in urban area. The purpose of this study is to apply the GIS based regional partitioning and arc routing methods for solid waste collection districting and vehicle routing-scheduling in order to provide waste collection service more efficiently. In this study, solid waste deposit sites are derived from the centroid of each building and the amount of solid waste is deduced based on the number of households and establishments. The regional partitioning procedure is performed based on waste collection zones which are constructed from waste deposit sites. The result of this study shows that solid waste collection districts which are delineated by regional partitioning method are able to increase efficiencies and cut costs in performing solid waste collection services. Also the output of vehicle-scheduling from the analysis of arc routing may provide more efficiently and quickly manage the scheduling of the residential solid waste collection routes, reducing costs with minimal deadheading costs. Therefore, the application of GIS based on regional partitioning and arc routing methods would be very useful to construct a solid waste management system by supplying the important and flexible informations for solid waste collection districts and vehicle routing-scheduling for waste collection.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1394-1396
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• 2021

해양쓰레기로 인한 환경 오염이 국제적 환경문제로 부각, 해양쓰레기 발생량 저감 및 효율적 수거 사업 추진을 위해 발생원, 현존량, 재질 구성, 공간적 분포 특성, 시간적 증감 추세에 대한 정보가 필요함에 따라 국내 해양쓰레기 현황, 관리 동향을 조사하고 분석하였다. 최근 데이터 기반의 효율적인 쓰레기 해결방안이 대두됐으며, 결과적으로 해양쓰레기 수거·조사의 공동협력 사업이 필요하다.

• Journal of the Korea Organic Resources Recycling Association
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• v.17 no.1
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• pp.103-109
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• 2009

Analysis of collection factor was studied to compare various parameters such as collection time, transport time, amount of collection and number of man power by on-the-spot survey at one municipal area and one rural area in Jeju-do. Results showed that the amount of man and time to collect 1 ton of waste of rural area($5.853man{\cdot}hour\;per\;time$) was four times as much as that of municipal area($1.527man{\cdot}hour\;per\;time$). In case of a transport time, rural area(11.08 per km/hr) has similar value to municipal area(11.07 per km/hr) and has half or one third value to the restaurant(36.7km/hr), an apartment area(33.0km/hr) and a detached area(22.4km/hr).

• 월간 기계설비
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• no.6 s.191
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• pp.36-48
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• 2006

인구증가와 급속한 산업화에 따른 대량생산, 다량소비로 인해 쓰레기의 발생량은 지속적으로 증가하고 있으며 생활수준의 향상으로 쓰레기의 질적 특성도 변화되고 있다. 정부는 분리수거로 쓰레기 감량화 유도를 위해 지난 ’95년부터 쓰레기 종량제를 전국적으로 실시하고 있으나 수거∙운반단계에서 발생하는 문제는 크게 개선되지 못하고 있다. 따라서 쓰레기 방치에 따른 악취, 미관저해 등의 환경 위생적인 측면과 교통 안전 등의 문제를 해결할 수 있는 새로운 개념의 수거∙운반방식 도입의 필요성이 대두되고 있다. 쓰레기 자동집하시설은 지하관로를 통해 쓰레기를 수거하는 방식의 최첨단 시스템으로 지상에서 쓰레기를 볼 수 없는 쾌적한 주거환경 조성 및 기존의 수거∙운반 단계의 단점을 해결한 쓰레기 수거 시스템이다. 이미 유럽 및 일본 등에서 도입되어 운영되고 있는 쓰레기 자동집하시스템은 삶의 질 향상과 함께 에서 운영비 절감 등 경제적인 면에서 우수성이 검증된 바있다. 국내에 쓰레기 자동집하시설이 도입된지 10여년이 지났으나 그동안 주상복합 및 병원, 오피스텔 등에만 적용될 정도로 시장이 매우 미미했었다. 최근들어 쾌적한 주거환경에 대한 관심이 높아짐에 따라 지자체 및 발주처가 확대적용할 예정이어서 새로운 시장으로 떠오르고 있다. 최근 토지 공사가 성남 판교 집하시설과 용인흥덕지구 집하시설 입찰에 들어갔고, 주공도 광명소하지구 집하시설을 입찰에 붙였는데 건설업계의 관심이 집중되었다. 이와 관련 본지는 쓰레기자동집하시설 도입 필요성 및 원리, 국내 적용 현황 등에 관해 자세히 알아보고, 우양기건(주)(대표 강석대)가 인천광역시 도시개발공사로부터 분리발주 받은 송도4공구 1, 2단지 쓰레기관로수송설비공사의 시공사례를 알아본다. 향후 쓰레기 관로수송설비공사는 주택 단지 형성시 반드시 필요한 공사중의 하나이며 지자체로부터 분리발주될 가능성이 높은 공사 중의 하나이므로 우리 설비건설업계가 관심을 가져야할 분야이다.

• Environmental engineer
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• s.323
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• pp.28-34
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• 2013