HydraMax - Model D-400S SHOWN -Dry Polymer Preparation System
The HydraMax Dry Polymer Preparation System has low capacity manual systems and automatic systems designed to produce up to 1000 pounds an hour of dry polymer.
EFFECTIVE POLYMER PARTICLE WETTING
Optimizing dry polymer performance starts with effectively wetting each individual polymer particle. Metering polymer directly from a volumetric feeder into a "wetting bowl" fails to disperse the polymer. The HydraMax pneumatic conveyance system is designed to thoroughly disperse the polymer prior to wetting in order to minimize polymer hydration time.
PROPER SOLUTION CONCENTRATIONS
Cationic polymers are typically prepared at solution concentrations between 0.25% to 0.5%. Anionic polymers are typically prepared between 0.1% and 0.25% solution. The solution can then be further diluted after the solution metering pumps through a secondary dilution systems.
PROPER MIXING
When polymer is first wetted, the molecule is not susceptible to damaging shear induced by a tank mixing impeller. However, during the
hydration process the polymer elongates and becomes susceptible to shear, and possible degradation of polymer`s effectiveness. Too low of mixing energy, or insufficient mix times will prevent the polymer from fully uncoiling. Too much mixing energy or mixing for too long will damage the polymer.
Inducing higher impeller speeds initially which then decrease as the polymer becomes more activated can result in higher polymer performance.
SUFFICIENT POLYMER AGING
The amount of aging time required to reach optimal performance depends on the type of polymer and other process variables, such as water temperature. It is not uncommon for systems to be designed with insufficient aging time. For optimum system flexibility, performance and with proper preparation as described above, it is recommended that cationic polymer systems be designed with 45 to 60
minutes of aging. Anionic polymer systems should be designed for up to 1 20 minutes of aging.