Roto-Sieve Drum Screen Model 4024-40/1.0
Manufactured in 2004
Came From Water District In California
Roto-Sieve Model 4024-40 drum screen was evaluated during the study to screen raw wastewater before passing it to MBR pilots. Model 4024-40 drum screen had 0.8-mm perforations and had a flow capacity of 60–300 gpm.
The roto-sieve drum screen consisted of a perforated drum with an internally fixed screw, which transports the separated particles out of the drum. Perforated drum screen helps to remove hair and fibrous materials from raw wastewater and prevents clogging of membrane in MBR systems. Raw wastewater was fed into the drum through an inlet pipe, which distributes the water over a large area of the drum’s interior. During passage through the drum, the wastewater is screened through the drum’s perforations and collects in the trough underneath. Separated particles are transported out of the drum through the screenings outlet.
The screen was also equipped with a counter rotating roller brush and a spray header with spray nozzles. This brush, along with sprayed water, continuously cleaned the screen to prevent clogging of the perforated slots. The brush is fixed against the 22 outside of the drum and rotates by friction between the drum and the brush.
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