Plywood factories often use polyacrylamide (PAM) to treat wastewater, primarily for flocculation.
Specific Functions
PAM reduces the surface potential of suspended solids by compressing the double layer, promoting particle aggregation to form flocs, and accelerating sedimentation and separation of pollutants. The acyl groups on its molecular chain can form bridges with suspended particles, significantly enhancing flocculation.
Application Scenarios
Plywood production wastewater often contains organic contaminants such as lignin and adhesive residues, as well as suspended solids. PAM can effectively remove these impurities and improve water quality.
Precautions
Select the type of PAM (e.g., anionic, cationic, or nonionic) based on the wastewater composition. Avoid adding dry powder directly; it is recommended to first dissolve it in a 0.1%-0.3% aqueous solution.
* Temperature and pH may affect performance* therefore, it is recommended to determine the optimal dosage through experimentation.
