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What are the different types of polyacrylamide?

First of all, we first appearance, the powder polyacrylamide flocculant is the granular polyacrylamide flocculant and then grinding, making it powder, and the powder polyacrylamide flocculant than the particle polyacrylamide flocculant dissolution rate Fast, greatly improving the work efficiency. However, the powder polyacrylamide flocculant in the feeding is easy to cause agglomeration, can not be fully dissolved, so the solubility should be a reasonable grasp of the mixing speed and temperature, in contrast, the particle polyacrylamide flocculant dosing Easy to disperse, can be fully dissolved.
Polyacrylamide is not only acrylamide units, acrylamide units accounted for most of the known as polyacrylamide. So polyacrylamide may contain structural units that can be ionized or hydrolyzed in water to charge them. Thus, there are cationic, anionic, nonionic, zwitterionic various polyacrylamides.
Anionic polyacrylamide and cationic polyacrylamide due to the different electrical properties of the band, so the choice of adsorption and bridging of the little particles are not the same ah. Cationic polyacrylamide through the electrostatic effect of a number of negatively charged colloidal particles or negatively charged particles adsorbed on its chain, the dispersed small particles gathered into large particles, play the role of flocculation and filter. Similarly, anionic polyacrylamide bridge with a number of positively charged colloidal particles or particles.
Through the experimental and practical application can make the following conclusions:
Polyacrylamide anionic PAM for high concentrations of positively charged inorganic suspended solids, and suspended particles coarse (0.01-1mm), pH value for the neutral or alkaline solution.
Polyacrylamide cations are suitable for negatively charged, organic-containing suspensions.
Polyacrylamide non-ionic PAM for organic, inorganic mixed state of suspended solids separation, the solution was acidic or neutral.
Polyacrylamide amphoteric ion PAM is suitable for the treatment of suspended solids with variable pH and variable pH.
Polypropylene cations are mainly used for municipal wastewater treatment plant sludge dewatering, such as the production of food alcohol wastewater, papermaking wastewater, beer wastewater, monosodium glutamate wastewater, sugar wastewater, organic high content of wastewater, beverage waste water, textile printing and dyeing wastewater industry As a coagulant cargo sludge dewatering agent. In addition, cationic PAM can also be used as oil chemical additives, such as clay anti-swelling agent, oilfield acidification thickener, and paper-based enhancer.
Polypropylene anions are mainly used to treat neutral suspensions based on inorganic solids. In the mining, for the clarification and flotation tailings, coal filtration, tailings (slag) dehydration, flotation tailings clarification, concentrate thickening and filtration, potassium alkali hot solution and flotation processing fluid to clarify , Fluorite and barite flotation tailings clarification, but also for salt processing of the original salt water, sludge dewatering clarification and phosphate mine recovery of water treatment. In the casting and metal manufacturing industry, for the furnace furnace gas washing water purification, powder metallurgy plant and pickling plant wastewater clarification, electrolyte purification and electroplating waste liquid clarification.
Nonionic polyacrylamide can be used in textile industry auxiliaries, when added some other chemicals can be formulated into a chemical slurry for textile sizing to improve the adhesion, permeability and desizing performance, so that the fabric has anti-static , To reduce the sizing rate, reduce the twisted pulp spots, cloth machine breakage rate and falling objects. Non-ionic polyacrylamide is mainly used as a sewage treatment agent, suitable for the acidity of the suspension, as the most suitable for the use of flocculants, then PAM is the role of adsorption bridge, so that the suspended particles flocculation sedimentation, to purify water purpose.

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