Drum Screens
(ROTATING CYLINER IN THE FLOW CHANNEL)

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• A rotary screen is a mechanical screening device used in water and wastewater treatment to remove solids from liquid streams.

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• The effluent to be treated enters through the flange on the outside of the screen body and is evenly distributed through the spillway and overflow through the filtering drum.

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• The solids are retained on the surface of the drum while it is rotating, the spill penetrates through the mesh opening and performs a self-cleaning function by passing through the lower part of the drum again.

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• As it passes through the outer scraper, the solids are released from the screen and gravity causes the solids to fall off the scraper.