Wastewater Issue:
Electroplating wastewater primarily contains heavy metal ions that cannot be naturally degraded, posing significant environmental pollution risks.
Solution:
The use of polyacrylamide (PAM) in electroplating plants for wastewater treatment.
Treatment Outcome:
The treated wastewater meets discharge standards.
Features of Polyacrylamide (PAM) in Electroplating Wastewater Treatment:
Flocculation:
PAM facilitates the flocculation of suspended substances through charge neutralization, bridging, and adsorption mechanisms.
Adhesion:
PAM exhibits strong adhesive properties, enabling it to bond particles through mechanical, physical, and chemical interactions.
Friction Reduction:
PAM effectively reduces fluid friction resistance. Adding a small amount of PAM can reduce resistance by 50-80%.
Thickening:
PAM demonstrates thickening effects under both neutral and acidic conditions. When the pH exceeds 10, PAM undergoes hydrolysis, forming a semi-network structure that significantly enhances thickening.
Flocculation and Sedimentation Process:
Flocculation and sedimentation occur when chemical reactions generate insoluble substances in the solution. In simple terms, suspended materials in wastewater are removed through gravitational settling. This physical process is straightforward, efficient, and widely recognized as one of the essential technologies in wastewater treatment.
