ROTARY DRUM SCREEN

Customized to your specifications with a wide variety of sizes and slots

The rotary drum screen, or rotary sifter, is part of the equipment usually found in municipal and industrial water treatment processes. This is the second pre-treatment process used in waste- water treatment plants after screening. It is generally placed upstream of the system, i.e. at the discharge of the pumping station which is in charge of collecting the wastewater.

The purpose of the rotary drum screen is to sort out various fine and coarse matters. The water first flows into a container and is poured onto a circular drum screen. Raw water mixed with debris will then pass through the drum screen gravitationally to be sifted .

Through its slow rotation, the debris is trapped on the surface of the drum screen. This will elim- inate any build up and clogging of the sifters. This waste will be then drained and scraped off the surface of the screen by an outer scraper mounted on a ressort system

All the waste will fall into a hopper, garbage can or dumpster and will be discharged to the outside later. Finally, the drum screen is cleaned with high or medium-pressure water after being scraped.