Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2001.03a
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- Pages.559-562
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- 2001
Electrokinetic Sedimentation and Remediation of River Dredged Contaminated Soil
오염된 하천준설토의 동전기적 침강 및 오염물질 제거
Abstract
There are many engineering applications that demand settling acceleration and volume reduction of fine solid suspensions. It is a matter to Improve the dredged soil thickening as well as the dewatering characteristic, because settling acceleration of dredged soil decreases the scale of industrial process and volume reduction of dredged soil decreases environmetal challenge to the disposal sites. Direct electric current induces the movement of fine solid particles suspended in water. Upon formation of a soil structure, the current further induces the movement of water and contaminant in the soil skeleton. Theses phenomena are known as electrokinetics. This study investigates the viability, of using the technique of electrokinetic dewatering to river dredged soil for settling acceleration and volume reduction. The aspect, such as sedimentation velocity, final volume and current variation are discussed.