TREATING APPARATUS FOR SELECTIVE RECOVERY OF METAL-HYDROXIDE FROM ACID MINE DRAINAGE

摘要

processing equipment for the selective recovery of the metal hydroxide is initiated from acid mine drainage. Processing apparatus for the selective recovery of the metal hydroxide from the acid mine wastewater of the present invention, the first outlet are an inlet and mine drainage mine drainage flows discharged is provided in an upper region bottom side, the first recovery port for the discharge precipitate first receiving portion, provided on the first housing part is provided with a first neutralizing agent receiving member of a mesh for holding the neutralizing agent, in the metal hydroxide contained in the mine drainage, the first neutralizing agent receiving member has a a first tank for the recovery of only a metal hydroxide to the reaction to precipitate in the pH index (pH) that is received in a composition by a neutralizing agent; And from the first reactor is mine drainage that flows through the first outlet receiving, and the second outlet mine drainage is discharged provided on the upper region, the lower side, the second having a second recovery port for the discharge precipitate receiving portion and the second receiving to create a hydrogen ion concentration index (pH) of the second flowing part receiving mine drainage in the pH index (pH) with different pH index (pH) of the first tank by installing the unit it is provided with a second neutralizing agent receiving member of a mesh for holding the neutralizing agent, the metal hydroxide and is recovered from the first reaction vessel among the metal hydroxide contained in the mine drainage to recover precipitate another metal hydroxide a second tank for; And the mine waste water is flowing through the second outlet from the second reactor is housed, and a third outlet mine drainage is discharged provided on the upper region, the lower side in having a third collection port for the discharge precipitate third receiving unit, create a pH index (pH) of the third flowing portion receiving mine drainage in the pH index (pH) with different pH index (pH) of the first reactor or second reactor the third is provided in the housing part to a neutralizing agent and a third receiving member for receiving a neutralizing agent in the mesh, metal hydroxide and metal is recovered in the first and second reactor of the hydroxide contained in the mine drainage to other in that it comprises a second tank for the recovery of the metal hydroxide precipitate characterized. According to the present invention, since the acid mine drainage to react in contact with the neutralizing agent in the upper part of the reactor, is the precipitate settle to the floor can provide the effect to prevent the neutralization efficiency of the precipitate coated or covered with reduced It is. ;