Featured Videos: Solids and Sludge Handling July 3, 2018 By Brenda Koenig Small System O&M, Wastewater wastewater o & m, biosolids, sludge, sludge thickening, solids handling, wastewater operation & maintenance, wastewater sludge 0 How are solids handled and sludge thickened in the wastewater process? Watch this RCAP video to find out how one wastewater plant uses a dissolved air flotation thickener to settle sludge out before the digestion process and then uses a centrifuges for de-watering. Need to simplify the process? Check out how this small wastewater plant in Ohio reduces the free water content of its sludge - all for under $300 out of pocket cost. Looking for more videos on the wastewater treatment process? RCAP offers a free 7-part video series to explain the technical steps in the process of treating wastewater. Comments are closed.