The state-of-the-art design utilizes multiple orifices to keep velocities at a minimum, and pulls treated effluent from below the surface to eliminate the possibilities of entraining floatables.  Siemens decanters are constructed of high quality durable corrosive resistant materials with a manual override that is unique in the industry and requires no routine maintenance. 

The decanter floats up and down with the changing water levels with the effluent spring loaded solids excluding valve keeping suspended solids from entering the decanter.  Effluent withdrawal is 18" - 24" beneath the water surface, preventing the entrainment of surface scum, floating debris, and foam.