Fred Hervey Sludge Bed Replacement from Parkhill, Smith & Cooper on Vimeo.

After 33 years of service, the clay-lined sludge beds at Fred Hervey Water Reclamation Plant had begun deteriorating and needed replacement. This project replaced the sludge beds with shrinkage-compensating concrete, which minimized the number of joints and allowed larger slabs of concrete to be poured at once. Each pour consumed 210 cubic yards of concrete.  The 24 pours provided 3.7 acres of drying beds for the project.

After going through the digesters in the treatment process, the sludge is sent to these beds to allow the water to evaporate, drying the sludge so that it can be taken to a landfill.