Polyelectrolyte – cationic
Cationic polyelectrolytes are used in ETPs to remove suspended solids, clarify water, and dewater sludge.
Mechanism:
They carry a positive charge that attracts and binds to negatively charged particles (like colloids and other suspended solids) in the wastewater.
Flocculation:
This neutralization process leads to the formation of larger, heavier clumps called flocs, which settle out more easily.
Sludge Dewatering:
Cationic polyelectrolytes can also improve sludge dewatering by helping to bind the sludge particles together, making them easier to separate from the water.
Other Applications:
Besides ETPs, cationic polyelectrolytes are also used in other industrial wastewater treatment, paper making, and mineral processing

