Rigid Board fabrication(PCB,FPC,METAL CORE Circuit etc) will generate many pollutant, so how to process the wastewater is a big challenge.
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. Rigid board 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.
Rigid Board Wastewater Treatment Process Introduction
Rigid Board wastewater treatment involves multiple stages to remove heavy metals, organic pollutants, and complex contaminants. The process typically starts with pretreatment, where different wastewater types are collected separately to avoid cross-contamination.
Next, coagulation and flocculation are applied: chemicals are added to destabilize particles and form larger flocs, which are then removed via sedimentation and neutralization to adjust pH and separate solids. For residual organic pollutants, the water enters a biochemical system combining hydrolysis acidification (to improve biodegradability) and biological aerated filtration (to degrade organics) .
Treated water undergoes recycling processes to meet reuse standards for industrial or irrigation purposes, achieving up to 98% contaminant removal. Sludge from sedimentation is transported for safe disposal or resource recovery . This integrated process ensures efficient pollutant removal and resource utilization.