| 摘要 |
PURPOSE:To remove the organic matter and to recover the residual ashes as the heavy metal resources by mixing supernatant liquid of methane fermentation of the organic matter into the mine waste water, regulating pH nearly to the neutralization to separate the generated precipitate, dehydrating, drying and molding it to burn. CONSTITUTION: The supernatant liquid obtained by the methane fermentation of organic matter is mixed into the mine waste water and pH is regulated nearly to the neutralization to separate the generated precipitate. In this case it is preferable that the operation is performed in the anaerobic environment owing to unweaken the reducing action. Then the supernatant liquid is removed and the precipitate contg. heavy metals is dehydrated and molded by a molding machine, dried and burned to remove the organic matter and the remaining residual ash is recovered as the metallic resources enriched in the heavy metals.
|
