Dry polymer for digested wastewater sludge Supplied at least 1,500-pound super bags Price to include delivery to: Public Works Department Wastewater Treatment Plant 752 Hwy. 87E Billings, Montana. Product must meet these criteria: Polymer per ton of dry sludge..........................23 pounds Polymer to be mixed at....................................0.6% solids Sludge feed rate to the centrifuge ...................45-75 gpm Centrifuge torque setting ................................. 5.0-5.2 Average Cake Solids by drying oven...............25.0% Average Centrate Solids..................................0.14%; The estimated quantity of polymer is 78,000 pounds per year. The City of Billings Public Works Department reserves the right to purchase more or less according to need.
