PAM is mainly used in oil drilling , water treatment and paper industries. Since China started late production of polyacrylamide acrylamide , polyacrylamide industry as a whole lags behind in the international industry , especially cationic polyacrylamide its production methods differ anionic polyacrylamide, higher technical difficulty. Chinas imports from abroad each year is relatively high molecular weight cationic polyacrylamide about 6,000 tons.
As a cationic polyacrylamide flocculant , mainly used in industrial solid-liquid separation processes , including sedimentation , clarification, concentration and sludge water technology , applications, major industries are: urban sewage treatment, paper industry, food processing industry , petrochemical , metallurgy , mineral processing, dyeing and sugar industry waste water treatment and other industries . Used in urban sewage and meat , poultry, food processing sludge wastewater treatment process sedimentation and sludge dewatering . By the positive charge in the sludge which contains an organic colloid negative electrical charge neutralization and bridging polymer excellent cohesion function to promote aggregation of colloidal particles into floc cities , separated from the suspension , the effect is obvious , low dosage .
Although the surface tension of the polyacrylamide in water is very small, but active group in the molecule , after adsorption on the interface , the interface state change , polyacrylamide having a good thermal stability, water-soluble , insoluble in addition to acetic acid, other chlorinated solvents propionic acid, acrylic acid , ethylene glycol , glycerol outside . At 210 degrees, anaerobic conditions , dehydration becomes polyacrylamide acyl nitrile , black powder carbonized at 500 degrees . As an important class of flocculants , thickeners , DRA , drilling fluid additives , surfactants , soil amendments , soil and water conservation loss agent , seed coating agents, paper enhancer widely used in oil exploration, water treatment, textiles, paper , mineral processing , medicine, agriculture and other industries, there are businesses additives said.