Specifications include, but are not limited to: Furnish, test and place in acceptable operation one automatic polymer feed system with appurtenances which matches the existing units currently installed to make a complete and operable system. Gravity Belt Thickener Sludge Thickening Feed – One polymer mixing and feed system with capacity of 0.22 to 2.22 GPH of neat polymer and a total solution capacity of 300 GPH. System Description: The polymer feed system shall consist of an integrated equipment package to automatically meter, dilute, activate and feed liquid polymer and water. The system shall not rely upon a static mixer as the means of polymer activation. At no time shall polymer be exposed to a rotating centrifugal pump impeller or other cause of excessive shear. Gravity Belt Thickener Sludge Feed Polymer System: Each Thickening polymer system shall include the following components: polymer blending unit (TPBU). The polymer system shall be controlled locally at the equipment and shall have equipment and status and alarm inputs to the SCADA system as specified herein. TPBU shall use totes of liquid emulsion polymer which is to be mixed with solution water and distributed to process points as indicated on the Drawings.
