73364868
May 17, 1982
Sep 27, 1983
Waste Treatment Units Comprising Tanks and Rotary Vacuum Filters for Removing Sludge; Coalescing Oil-Water Separators, Followed by Water Drain Off; Chemical Treatment Systems for Coagulating Solids; Precipitating Units for Adding Chemicals to Precipitate Materials from Solutions and Recovery of the Liquids and Solids
Environmental Control Apparatus