In-Process Recycling of Rinse Water From Copper Plating Operations Using Electrical Remediation

摘要

The copper plating industry generates large amounts of contaminated rinse water. A novel system has been developed to recycle the spent rinse water back to the rinsing operation. This system integrates electrowinning and ion-exchange for the efficient removal of metal contaminants, such as copper. The system utilizes integrated ion-exchange electrodes for the simultaneous removal of anions and cations in solution. After treatment, heavy metal concentration and TDS are reduced, and the pH is neutralized. Consequently, treated water can be recycled back to the rinse operation. As an added benefit, the cell has the ability to be regenerated in-situ.