Specifications include, but are not limited to: Polymer Specifications The polymer equipment and polymer to be tested and bid shall be suitable as a conditioner for screw press dewatering of anaerobically digested (mixed) primary and secondary sludge biosolids from the Bozeman WRF. Polymers to be tested shall be high molecular weight cationic or anionic emulsion type (cationic expected) compatible with the City’s existing polymer mixing and feed equipment noted above. The polymer may be used for thickening of waste activated sludge via a rotary screen thickener. Polymer must maintain at least ninety percent (90%) effective strength for a minimum of six (6) months after delivery when stored in a covered, heated, and ventilated area (60°F to 80°F).
