PCB wastewater is divided into cleaning wastewater, ink wastewater, complex wastewater, concentrated acid waste liquid, concentrated alkali waste liquid and so on.
Wastewater has many types of pollutants and complex components. The rational treatment of targeted wastewater is the key to ensuring that wastewater treatment meets standards. PCB wastewater treatment is mainly divided into chemical method and physical method. Chemical method is to convert pollutants in wastewater into easily separated materials (solid or gaseous), including chemical precipitation method, redox method, ion exchange method, and electrolytic method. The physical method is to enrich the pollutants in the wastewater or to separate the easily separated PCB materials from the wastewater to make the wastewater meet the discharge standards. The main methods are decantation, electrodialysis, reverse osmosis, etc.
