고화 처리에 의한 미세입자 퇴적물의 유효활용을 위한 새로운 시도

Abstract

Sediments which contain high contents of fine sediments less than 75 &micro m and water were mainly focused in order to beneficial use followed by solidification treatment. This treatment, a new approach was tested for a short period of time (within 3 days) considering the application of on-site dredging or adjacent sea area. 5 solidification agents having high content of SiO2 and Al2O3 were used in this research. After solidification treatment, treated materials were converted to jelly like materials depending on reaction conditions. Uniaxial compressive strength (UCS) could be possible from the third day after solidification treatment. Since UCS ranged from 0.5 MPa to over 1.5 MPa, UCS met with standards of beneficial use in KOREA, according to treatment conditions. Based on toxicity characteristic leaching test, leaching blocking effect of heavy metals were more than 90%. The feasibility of solidification treatment was found for the beneficial use of sediments.e (within 3 days) considering the application of on-site dredging or adjacent sea area. 5 solidification agents having high content of SiO2 and Al2O3 were used in this research. After solidification treatment, treated materials were converted to jelly like materials depending on reaction conditions. Uniaxial compressive strength (UCS) could be possible from the third day after solidification treatment. Since UCS ranged from 0.5 MPa to over 1.5 MPa, UCS met with standards of beneficial use in KOREA, according to treatment conditions. Based on toxicity characteristic leaching test, leaching blocking effect of heavy metals were more than 90%. The feasibility of solidification treatment was found for the beneficial use of sediments.