- Remediation and dewatering of dredged slurry and mine tailing with the vacuum method and electrokinetic phenomenonVacuum-electrokinetic dewatering and remediatin method

摘要

PURPOSE: A remediation and dewatering of dredged slurry and mine tailing with vacuum method and electrokinetic phenomenon(vacuum-electrokinetic dewatering and remediation method) is provided, which can remove heavy metal contained in river bed sediment and highly moisturized mine tailing by desorbing heavy metal by electrokinetic phenomenon and by removing the desorbed heavy metal by electrophoresis and mud flow caused by electro-osmosis and vacuum-dehydration at water discharge material served also as a cathode. The system can also facilitate dewatering by smoothly removing pore water by vacuum-dehydration and electro-osmosis. CONSTITUTION: In the purifying and dewatering treatment method of river bed sediment and highly moisturized mine tailing contaminated with heavy metal within a shortened time by a vacuum-dehydration and electrokinetic phenomenon, hydrogen ion generated by electrolysis at anode(3) migrates toward the soil sample by electrophoresis caused by electrostatic force and mud flow caused by electro-osmosis and vacuum-dehydration to separate heavy metal adsorbed onto the surface of soil particle, and the desorbed heavy metal ions migrate toward water draining material(4) served also as a cathode by electrophoresis caused by electrostatic force and mud flow caused by electro-osmosis and vacuum-dehydration to remove heavy metal and at the same time smoothly remove pore water by vacuum-dehydration and electro-osmosis.