effect of polyacrylamide polymers on floc size in britain

effect of polyacrylamide polymers on floc size in britain
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  • Does polymer dosing increase floc resistance to floc break-up?
  • . With increasing polymer dose, median floc size increased from 228 to 325 μm. Floc responses to increased shear rate showed that polymer dosing increased resistance to floc break-up.
  • How does polymer dose affect floc regrowth?
  • With increasing polymer dose, median floc size increased from 228 to 325 μm. Floc responses to increased shear rate showed that polymer dosing increased resistance to floc break-up. While all of the flocs showed high potential to regrow, regrowth was greatest in polymer-dosed systems, where flocs exceeded the size that they had reached previously.
  • Are cationic polyacrylamides better than anionic polyamides?
  • They suggested that cationic polyacrylamides (PAM) produced floc aggregates with larger size, greater shear-resistant ability and higher regrowth capacity than anionic one, arising from the contribution of charge neutralization and bridging effects , , .
  • Does polymer-enhanced floc cohesion affect particle aggregation during ballasted flocculation?
  • 4. Diverse predominant floc-growth mechanism (such as charge neutralization, polymer bridging, and/or electrostatic patch) seemed to occur for each combination of coagulant dosage and PAM type, thus determining the interaction between polymer-enhanced floc cohesion and particle aggregation during ballasted flocculation.