Flocculants have different ionic types. Generally speaking, there are huge differences in the use of different ionic flocculants. It is worth noting that the usage of flocculants in different industry, such as steel and metallurgy industry, printing and dyeing leather industry, is also very different. Among them, the ionic types of flocculants we often use are mainly anionic, cationic and nonionic. Now, let's briefly introduce the differences in the use of different ionic flocculants.
(1) For sewage sedimentation, the recommended ratio is 0.1%.
(2) Sprinkle the anionic flocculant evenly in the tap water first, combined with 40 to 60 minutes of medium-speed stirring to make the polymer fully dissolve in the water before adding it and using it.
(3) During the experiment, take 100ml of wastewater, add 10% flocculant solution, and stir slowly, use a syringe to slowly drip the flocculant solution, 0.5ml each time, and determine the appropriate agent according to the size of the alumen ustum generated and the tightness of the flocs, the clearness of supernatant, sedimentation speed, dosage, etc.
(4) Anionic flocculants are suitable for steel, chemical fiber, printing and dyeing, electroplating, hydrometallurgy, and can also be used as thickeners in construction glue plants and paint plants, and as dispersing agents in paper mills.
When used in air flotation technology, the recommended ratio is 0.1%, the usage is the same as the anion, and the stirring time is 90 minutes.
(1) When used for sludge dewatering, the flocculant is recommended to be added with a concentration of 0.2% and a mixing time of 50 minutes.
(2) During the experiment, take 100ml waste water and slowly drip the flocculant solution with a syringe, about 0.5ml each time, and determine the appropriate agent according to the size of the alumen ustum generated and the tightness of the flocs, the clearness of supernatant, sedimentation speed, dosage, etc.
(3) Cationic flocculant is suitable for pharmaceutical factories, leather factories, the treatment of printing and dyeing sludge and chemical sludge, paper mills, sewage treatment plants, etc.