The significant advantages that are obtained in water clarification and dewatering of the sludge with the addition of synthetic organic polymers, called polyelectrolytes, causes these flocculants are widely used as primary or auxiliary together with inorganic coagulants (alumina sulphate, chloride ferric, etc.).
Polyelectrolytes powder, dispersion in water, create highly viscous solutions and for dilution require special precautions to avoid the formation of lumps and also the breakage of the molecular chain with the consequent reduction in the effectiveness of the product.