고온처리 기술을 이용한 중금속 함유폐기물의 고형화 = Solidification of heavy metal bearing sludge by sintering process

다국어 초록 (Multilingual Abstract)

The possibility of using solidified heavy metal bearing wastes : sludge from zinc plating shop and synthetic heavy metal waste, as a building brick was tested. Various amount of each waste, sodium silicate and clay were mixed and were fired at 1000 ℃ for 24 hours. Physical properties of solidified waste forms such as compressive strength, water absorption, specific gravity, weight loss on ignition were tested to evaluate the compatibility of solidified wastes as a building brick. Korea standard leaching test was also conducted to evaluate the environmental safeness of the solidified waste forms.
Results of leaching test showed that the leaching amount of heavy metals(Cu, Cr, Pb, Zn) was decreased to the average of 92% after solidification. Addition of sodium silicate greatly enhanced the solidification efficiency. It was also found that up to 40%(weight basis) of heavy metal waste could be added to produce the building brick.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험재료 및 방법
• 2-1. 실험재료
• 2-2. 고화처리 및 실험방법
• Ⅲ. 결과 및 고찰
• 3-1. 고화처리 전 시료의 중금속 함량 및 용출특성
• 3-2. 시료의 물성변화
• 3-3. 시료의 용출특성
• 3-4. 대기로 방출되는 중금속량
• Ⅲ. 결론
• 참고문헌