| 산업폐기물 중의 유해중금속의 환경친화적 안정화 처리(II) |
| 원종한, 최광휘, 최상흘, 이훈하1, 손진군1, 심광보 |
한양대학교 세라믹공학과
1포항산업과학연구원 자원활용연구팀 |
| Environmentally Adaptive Stabilization of the Hazardous Heavy Metal Waste by Cementious Materials(II) |
| Jong-Han Won, Kwang-Hui Choi, Sang-Hul Choi, Hun-Ha Lee1, Jin-Gun Sohn1, Kwang-Bo Shim |
Department of Ceramic Engineering, Hanyang University
1Environment Energy Research Division, Materials Utilization Research Team, RIST |
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| ABSTRACT |
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Slag cement and supersulfated slag cement were fabricated by mixing blast furnace slag and ordinary portland cement and adapted to solidify/stabilize heavy metal contained hazardous waste sludge. In case of slag cement, it showed continuous increase of their compressive strengths, which is attributed to the formation of the C-S-H, ettringite and monosulfate with STS sludge. However, BF and COREX sludge has a different shape and composition. therefore, adequate compressive strength could not be achieved with this slag cement. In case of the mixture of the each sludge like the STS-BF or the STS-COREX, the compressive strength over the standard level for disposing the wastes could be obtained with slag cement. The supersulfated slag cement that contain accelerators was very effective in solidifying the COREX sludge, which was difficult to solidify using different cement and obtained high compressive strength only for 3 days. |
| Key words:
Solidification and stabilization, Slag cement, Supersulfated slag cement, Sludge |
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