what is polyacrylamide CAS 9003-05-8
Polyacrylamide (PAM) is a polymer formed from acrylamide subunits, it is long-chain polymer designed to attract either positively charged particles (organic materials, such as carbon or human waste) or negatively charged particles (inert materials, such as sand or clay).
PAM is a chemical which purchased in dry, emulsion, liquid and tablet form.
Depending on the other monomers polymerised with the acrylamide, the final polymer can have anionic, cationic, amphoteric or non-ionic charges to suit different needs.
Why is polyacrylamide used in water treatment?
Polyacrylamide is used in a wide range of water treatment applications because of their excellent flocculation properties, wide adaptability and cost-effectiveness.
PAM can adsorb suspended particles in water through its long molecular chains. It forms large flocs by bridging between particles, which accelerates the sedimentation of impurities. This significantly improves the efficiency of solid - liquid separation, facilitating the removal of suspended solids, colloidal substances, and some organic pollutants, thus clarifying the water.
It can be adjusted to suit different water quality conditions. For example, anionic polyacrylamide (APAM) is suitable for treating water with a high content of positively charged impurities, while cationic polyacrylamide (CPAM) is effective for water containing anionic substances. nonionic polyacrylamide can be used in some special cases where the influence of ionic charge needs to be avoided. This versatility allows it to be widely applied in various water treatment scenarios, including industrial wastewater treatment, domestic sewage treatment, and drinking water treatment.
A small amount of acrylamide polymer can achieve good flocculation results. Compared to other water treatment agents, it can reduce the consumption of chemical agents and the overall cost of water treatment.
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