| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for separating and collecting heavy metal from a polluted substance with high efficiency by using a carbon dioxide dissolved fluid in which carbon dioxide is dissolved at a high concentration and that is maintained under a high pressure as a result of development of the carbon gas dissolved fluid manufacturing device that dissolves the carbon gas at high concentration under high pressure. <P>SOLUTION: The method includes a first step for inputting a substance that is polluted by heavy metal in a pressure container 5, supplying the carbon gas dissolved fluid in which the carbon dioxide is dissolved at high concentration and maintained under a high pressure into the pressure container 5, stirring and mixing it with the heavy metal polluted substance, a second step for dehydrating the heavy metal polluted substance, supplying treatment water to a heavy metal treatment tank 6, removing the carbon gas dissolved fluid in the pressure container 5, and ventilating it to air to supply it to the heavy metal treatment tank 6 under the condition in which a predetermined amount of the carbon gas is discharged, and a third step for separating and collecting the heavy metal by the dehydration treatment after adding a heavy metal coagulant in the heavy metal treatment tank 6. <P>COPYRIGHT: (C)2010,JPO&INPIT |
