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A Study on Separation and Management of Excavated Materials Containing Waste in Korea
( Kyuyeon Kim ) , ( Suyoung Lee ) , ( Heesung Moon ) , ( Taewan Jeon )
ISEE 2019권 403-403(1pages)
UCI I410-ECN-0102-2019-500-001535553
이 자료는 4페이지 이하의 자료입니다.

The purpose of this study is to survey screening system and resource recovery of excavated materials containing waste from various excavating fields such as reconstruction of landfill sites for reuse, reclamation of unsanitary landfill and residential land development of waste dumping sites. Through the analysis of the samples we were able to understand the characteristics of the excavated materials containing waste such as calorific value, elementary composition, TOC, foreign material content and LOI. Separation technology for excavated materials containing waste started to be developed in the early 2000s and more than 40 techniques were found in Korea Patents, Utility models and New Environmental Techniques. There were about 150 excavation cases of landfilled materials containing waste and most of them were digging out from unsanitary landfills and developing residential land. The selection process of excavated materials containing waste is mainly consist of size sorting process for soil and rocks by the net size of trommel, and plastic sorting process for film-like combustible fractions by rake separation. Further precise separating process is carried out if necessary. It has been found that elimination of the moisture of excavations, removal of attached soil from the surfaces of the excavated combustibles and the quantitative supply method of the input devices are the main operating factors as essential factors for the optimal separation of excavated materials containing waste. For efficient management and recycling of excavated materials containing, it is necessary to set criteria of ash content in separated combustibles and criteria organic matter content in separated soils.

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