Simple package improves dewatering
Problem
An upgrade to the Groton (N.Y.) Wastewater Treatment Plant from 0.35 to 0.5 mgd included sequencing batch reactors followed by tertiary treatment. The Public Works Department also wanted to replace the aged and undersized drying beds with a more efficient dewatering system. In summer, the beds averaged cake at 12 percent solids. In winter, they became storage ponds with insufficient capacity.
Solution
Engineers selected the 3012 DSP screw press from BDP Industries for its compact footprint and ability to dewater tramp material. A positive displacement pump transfers feed slurry from the aerobic digester to the rotary drum thickener. Thickening
