For many newcomers, these two medicines seem to be difficult to distinguish. In fact, PAM is an organic polymer compound, the Chinese name is polyacrylamide, and the average molecular weight can range from thousands to tens of millions. PAC is an inorganic substance and its Chinese name is polyaluminum chloride.
PAC and PAM have the following specific differences:
1. Different flocculation mechanism
PAC can flocculate because it will form a network structure after entering the water, holding small solid particles together. PAM can flocculate because it can break the electrical balance between small particles after entering the water, so that the solid particles in the wastewater can gather by themselves.
2. Different colors
PAC generally comes in three types: white, tan and yellow. And PAM is only white powder.
3. Different dosage
The dosage of PAC is generally 200-300PPM, that is, 200-300mg per liter of wastewater is used on average. The dosage of PAM is generally 3-10PPM, about 3-10mg per liter of wastewater. PPM stands for parts per million, 1PPM=0.001%, and is generally used when the concentration is low.