application of polyacrylamide flocculants for water in india

application of polyacrylamide flocculants for water in india
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  • Why are polymer flocculants used in water purification?
  • Therefore, in modern water purification technologies, polymer flocculants are increasingly used. Polymer flocculants cause the formation of large, coherent aggregates (so-called flocs) that settle in the solution. Synthetic polymers are highly effective flocculants at low dosages but have poor shear stability.
  • What is a polymer flocculant?
  • Among the synthetic polymer flocculants, the most important is water-soluble polyacrylamide (PAM)—a non-ionic, amorphous polymer which can be modified to ionic form in the copolymerization process [ 8, 9, 10 ]. The acrylamide monomer can be used for grafting or crosslinking of other type of polymers.
  • Can polycarbonate & polyacrylic acid be used for flocculation?
  • When employing each polymer specifically, Al Dawery demonstrated that combining a blend of polycarbonate and polyacrylic acid for flocculation results in improved liquid clarity. The combination of flocculants could raise the sludge volume index by 70%, compared to 40% in the case of polycarbonate alone.
  • How effective is flocculant based on emulsion polymerization?
  • As an example, Fig. 3 a displays the dairy effluent and effluent condition at a dose of 53 mg/L (flocculant based on PAM tailored made with inverse emulsion polymerization); clearly, flocculant has been successful in removing “soft particles” from staying suspended in the water.