As a rotary drum screen manufacturer and a worldwide supplier, Vortex Engineering offers standard dimensions and stainless steel grades to choose from.
Rotary drum screens are mostly used in places where the daily processed water flow rate volume is low and the size of the solid waste particles inside the wastewater are small.
There are two types of screens commonly being used. First one is perforated and the second one is wedge wire.
Perforated plate screens provide a higher capture rate, where wedge wire screens minimize the risk of clogging with a high permeability ratio.
As they are compact and portable systems, the installation process is easy and requires no infrastructure.
Externally Fed Rotary Drum Screen
Utilizing the external surface of a wedge wire drum screen, the wastewater is pumped and distributed equally to the outer surface.
The wastewater flows through the screen and out from the bottom part while the solid waste is captured and transported to the opposite side of the drum screen where it gets removed from screen surface and discharged with the help of a doctor blade.
Internally Fed Rotary Drum Screen
Internally fed rotary drum screen utilizes the internal surface of a wedge wire, perforated, or a wire mesh drum screen.
Wastewater is pumped inside the screen and the flow is distributed equally to the internal surface by the help of a distribution weir.
While the wastewater flows through, the solid waste gets stuck on the internal screen surface. Screenings get drained as they move up and then discharged at the top of the drum screen into a conveyor with the help of a pressured nozzle system located on the outer side.
