Polymer must be a synthetic, high molecular weight cationic polyelectrolyte supplied in a micro-bead form, which renders it essentially non-dusting and free flowing. It must be completely soluble in water and should dissolve rapidly. The supplied polymer must also have a high, cationic charge and density. Principle Uses of Specified Product: The product must be designed specifically to aid the dewatering of sewage and industrial sludges, prior to dewatering on centrifuges, belt presses and screw presses. The product must be suited to the flocculation of mixed and secondary sludge. The supplied product must be capable of performing over a wide range of pH values and equal to BASF Zetag 7557 cationic dry micro bead polymer. Typical Properties in desired product: Must be free-flowing micro-beads Cationic Charge: 56% min Particle Size: 100% < 1000 microns Bulk Density: 50 lbs/cu ft Solids: > 90 % Intrinsic Viscosity: 7 dl/g pH of 1% solution at 25°C: approx. 3.6 Viscosity at 25°C: 2000 cP @ 1.0 % solution
