하수슬러지 소각재를 재활용 재료화한 소성벽돌 및 평가 (Assessment & Sintering Brick Made from Recycling Material of Sewage Sludge Ash)

서지정보

· 발행기관 : 한국환경기술학회
· 수록지 정보 : 한국환경기술학회지 / 14권 / 4호 / 293 ~ 301페이지
· 저자명 : 이현주

초록

본 연구는 국내 각 하수처리장에서 대량 발생하는 하수슬러지를 안정성과 효율성을 겸비한 소각 처리방법을 이용하여 감량화와 동시에 Recycling 하기 위하여 소각된 Sewage Sludge Ash를 건설자재 재료의 일부분으로 재활용하기 위한 목적으로 연구하였다. 기존의 건설자재인 배합토 및 고령토 등과 혼합하여 성형 제작후 건조 과정 등의 공정과정(Mixing, Moulding, Demoulding, Drying, Sintering ) 을 거쳐 소성벽돌로 제작한 시편의 물리적 특성 분석 결과 실험시료 SSA 첨가율 50%까지 첨가 가능한 것으로 나타났다. 건설 자재원료의 일부로 재활용함으로써 경제적으로는 처리비용 절감, 환경적으로는 폐기물처리 및 재활용, 기업측면의 건설자재비용 절감효과 및 기술적 측면의 환경기술개발에 의한 해외기술 이전 등을 통하여 기술료 외화획득의 경제적 수익창출이 가능한 연구결과로 나타났다.

영어초록

The method of recycling through the application of the sewage sludge ash generated from wastewater treatment plant in korea is to be utilized for a kind of sintering brick material. most of the sewage sludge is comprised of organic material with high content of moisture, and if this is minimiazated into the form of ash through incineration, the reduction of volume and uniformity of particles can be secured. this sample name is sewage sludge ash(SSA)the study was progressed by forming the shape of sintering brick with the application of White clay& mixed clay in which incinerated material (sewage sludge ash) of Sewage sludge is utilized as general architectural and construction material. In addition, the ratio of optimum addition quantity of sewage sludge ash(SSA) for each kinds of binder was compared by applying white clay & mixed clay(white clay 6 vs fly ash 4). The physical property of each one of the kinds of sample mold (Eco-brick) through sintering process was compared & analysed. for ex) Compressive strength(Mpa), percentage of contraction, absorptance. The sintering process was follow set method material previously mixing, moulding, demoulding, drying and sintering. In addition, the ratio of optimum addition quantity of Sewage sludge ash for each kinds of binder was compared by applying mixed clay(white clay 6 vs fly ash 4). rather than using white clay only.
The addition rate of SSA(Sewage sludge ash) results added up from 10% to 50% was found to be reusable for construction recycling material (=Binder=eco brick material)

참고자료

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