| 摘要 |
PURPOSE:To deposit and recover metals from waste liquid with excellent power efficiency by separating a cell with a partition wall into a cell provided with many electrodes and a cell wherein waste liquid is pumped up, and circulating waste liquid rapidly through both cells when metals dissolved in industrial waste liquid from plating, etc. are deposited and recovered. CONSTITUTION:Metals in waste liquid discharged from a plating factory, etc. and contg. metals are deposited in an electrodeposition cell to remove and recover the metals. In this case, the electrodeposition cell 1 is separated with a partition wall 2 into a pumped cell 4 and a cell 6 provided with a group of electrodes. and both cells are communicated at the bottom part. A gas such as air is bubbled out from a diffuser pipe 3 for air lifting provided in the pumped cell 4, and waste liquid is sent upward by the bubbles and flown over the partition wall 2 into the cell 6 provided with a group of electrodes. A group of electrodes consisting of many anodes 5a and cathodes 5b are provided in the cell 6. Metallic ions in waste liquid are deposited on the reticular cathode 5n, dropped, and accumulated at the bottom of the electrodeposited cell 1 as electrodeposited metals 8. The circulation of waste liquid through both cells 4 and 6 is accelerated, and the dissolved metals are deposited and removed with high power efficiency.
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