Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A Study on Adsorption Characteristics of the Heavy Metals using Melting Slag of Incinerator Ash

소각재 용융슬래그를 이용한 중금속 흡착특성에 관한 연구

  • 유승철 (전북대학교 토목공학과 토목.환경연구실) ;
  • 김환기 (전북대학교 토목공학과 토목.환경연구실)
  • Received : 2008.01.29
  • Accepted : 2008.06.16
  • Published : 2008.08.15
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Abstract

In order to utilize cinder melting slag as a filter media to control the quality of early rainwater, its environmental stability was verified by heavy metal elution experiment and improved by pre-treatment. Possibilities of improving its function as an absorbent was considered. Absorption characteristics of melting slag before and after the pre-treatment were analyzed by heavy metal equilibrium and stationary-phase column experiments, which in turn were analyzed by comparison experiment with activated carbon. As a result of heavy metal elution experiment, every metal item existed in a much lower amount than the criteria or was not detected, implying that there is no problem recycling it. Absorption equilibrium experiment showed that the time for pre-treatment melting slag to reach the equilibrium was reduced, while the absorbed amount was greatly increased. Stationary-phase column experiment assures us that the elimination rate was not changed much by influx rate, pH and the change in packing volume rate, indicating that this melting slag can be used not only as a filter media to control the quality of early rainwater but also in many areas of water-processing.

Keywords

Acknowledgement

Supported by : 중소기업청

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