Abstract

본 연구는 울산지역의 산업단지에서 발생하는 유기성 슬러지에 대하여 삼성분, 원소조성, 빌열량 및 열중량 분석을 실시하였다. 삼성분 분석 결과 평균값은 수분함량이 72.9%, 가연분이 18.5%, 불연분이 8.6%로 나타났으며, 원소분석 결과 평균값은 C 33.9, O 26.4, H 4.4, N 4.4, S 0.6%로 나타났다. 저위발열량이 <TEX>$1,500{\sim}2,000\;kcal/kg$</TEX> 사이인 업체가 6개 업체, 2,000 kcl/kg 이상의 발열량을 가지는 4개 업체는 직접 연소 처리하여 에너지화하는 것이 가능할 것으로 판단된다. 산업분류 코드 업종별 시료에 대한 TGA 분석 결과, 2개 업종에서 배출되는 유기성 슬러지의 경우 <TEX>$800^{\circ}C$</TEX> 이상에서 연소를 해야 할 것으로 판단되며, 3개 업종에서 발생하는 슬러지의 경우 <TEX>$600^{\circ}C$</TEX> 정도에서 저온연소가 가능할 것으로 판단된다. In this study, we analyzed the physical and chemical properties such as proximate analysis, ultimate analysis, heating values, and thermogravimetric analysis for the organic sludges discharged from an industrial complex in Ulsan. The average water, combustible, and ash content of organic sludges were 72.9, 18.5, and 8.6%, respectively. And according to the ultimate analysis of organic sludges, the C, O, H, N, and S compositions were 33.9, 26.4, 4.4, 4.4, and 0.6%, respectively. According to the results of investigating the lower heating values, 6 sludges were on the range of <TEX>$1,500{\sim}2,000\;kcal/kg$</TEX> and 4 sludges were on the range of over 2,000 kcal/kg. Therefore, these 10 sludges could be directly applied to industries which try to use the energy by direct incineration.

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