Polyacrylamide according to the different molecular weight of the different dosage of different molecular weight polyacrylamide use and dosage! In recent years, polyacrylamide has developed into a mature technology, the market volume of large flocculant, and gradually replace the traditional flocculant trend. Different molecular weight polyacrylamide use method According to the different conditions of raw water, before use can be a small test! Details are as follows: First, anionic polyacrylamide: 1, for sewage sedimentation, the proposed concentration of 0.1%. 2, the first powder evenly sprinkled in tap water, to 40-60 minutes of medium speed stirring to fully dissolve the polymer in water, can vote for use. 3, the experiment, take 100ml of waste water, add 10% PAC solution, and slowly stirred with a syringe slowly dropping PAM solution, each 0.5ml, according to the size of the generated alum and floc tightness, the supernatant Clarity, settling rate, dosage and so on to determine the most suitable agent. 4, for steel, chemical fiber, printing and dyeing, electroplating, hydrometallurgy, construction glue can also be used plants, paint factory do thickener, paper mill to do dispersant. Tons of waste water to add dry powder amount of 5-10g. Second, non-ionic polyacrylamide for air flotation process, the proposed concentration of 0.1%, the usage of anions, mixing time of 90 minutes. Third, cationic polyacrylamide 1, sludge dewatering, the proposed concentration of 0.2%, mixing time 50 minutes dosing use. 2, the experiment, take 100ml of waste water, slowly dropping the PAM solution with a syringe, each about 0.5ml, according to the size of the generated alum and floc tightness, supernatant clarity, sedimentation rate, dosage and so on Determine the most suitable agent. 3, for pharmaceutical, tanneries, printing and dyeing sludge, chemical sludge, paper mills, sewage treatment plants, tons of waste water to add dry powder amount of 10-20g. Pharmacy dosage calculation 1 anion: the ratio of concentration 1/1000 that : 1 ton of water plus 1kg of PAM for small experiments: If the sewage 100ml Riga 1ml Pharmacy; 1 ton of sewage Riga 10g (L) Pharmacy; 1 ton of sewage add 10g PAM 2. Cation: the ratio of concentration 2/1000 That is: 1 ton of water Riga 2kg PAM; do a small experiment: such as sludge 0.5mlL 100ml; 5 tons of chemicals in 1 tons of sludge; 1 tons of sludge plus 10g pAM