Water‐Treatment‐Plant Waste Disposal — Part 3

Part 1 of this article described the facilities, operation, and primary concentration studies at the Sturgeon Point, N.Y. water-treatment plant of the Erie County Water Authority. Part 2 reviewed and discussed pilot-plant studies of ten possible systems for alum sludge treatment and disposal at that plant. Based on these studies, the systems considered most feasible for application at the Sturgeon Point plant are Pressure filtration Precoat rotaryvacuum filtration Scroll centrifugation Freeze-thaw followed by vacuum filtration Alum recovery followed by horizontal vacuum filtration