| 摘要 |
PURPOSE: A treating method of acidic wastewater in mine using slag is provided, which is characterized in that wastewater in mine is neutralized and, manganese or aluminium ions are adsorbed by the slag. CONSTITUTION: A method is composed of a slag layer(3) which acidic underground water(1) in mine(7) is passed, a strainer(4) for preventing from discharging slag, and a discharging pipe(8) for discharging treated underground water. In the case of general extraction experiment of slag, the amount of calcium is 200 mg/, but in the case of TCLP(Toxicity Characteristic Leaching Procedure), the amount of slag is 8 times more. Wastewater in mine is neutralized using slag controlling pH 8, and manganese ion and aluminium ion are adsorbed by slag or removed as metal hydrate.
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