Sludge conditioning is required before dewatering. So, during the sludge conditioning process, what is the dosage of polyacrylamide (PAM)? How is it determined? What percentage is appropriate for preparing polyacrylamide (PAM)? The dosage varies for different types of sludge, and the suitable type of polyacrylamide (PAM) also differs—some require anionic PAM, while others need cationic PAM. Before selecting the type of PAM, it is necessary to first measure the charge properties of the sludge. Based on the sludge's charge properties, the appropriate type of PAM can be determined.
Dosage of Polyacrylamide
Polyacrylamide comes in various properties: cationic, anionic, and non-ionic. Generally, the PAM used for active sludge dewatering is cationic. The solution is typically prepared at a concentration of 0.1%, and the dissolution and stirring time is relatively long. For solid PAM preparation, stirring for over an hour is usually required. In the absence of sludge samples for testing, the recommended dosage for dewatering is 20 mg/L of wet sludge (i.e., concentrated sludge, which generally has a moisture content not below 97% and is usually above 99%). Dosing equipment, especially the selection of metering pumps, should allow for some margin to facilitate adjustments.Acrylamide Price Polyacrylamide Manufacturer Polyacrylamide Dosage and Function 

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