... gel 2. cationic polymer 3. sewage disposal cationic water treatment polyacrylamide gel 1. As a flocculating agent ... processes, applications for all the major sectors are: urban sewage treatment,paper,food processing, petrochemical, metallurgical, processing, dyeing and ... used for dyeing wastewater, leather wastewater, oily wastewater treatment, so that turbidity removal,decolorization, to achieve the ...