About Continuous Belt Bar Screens

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Continuous belt bar screens are fairly new self-cleaning mechanical bar screen that are being used for screening applications. The continuous belt bar screen is equipped with cleaning elements that are fixed to an endless belt used to removed objects from the waste stream. The number of elements attached to the belt is determined by the depth of the channel. The cleaning elements include hooks that stick out to augment the screening capture of larger object and rags from the wastewater.

Trash Racks

Manual Bar Screens

Mechanical Bar Screens

Chain Bar Screens

This bar screen will accommodate bar spacing openings between 0.5 to 60 mm or (0.02 to 3 inches [metric system conversion]), therefore the bar screen can act as a fine screen or coarse bar screen. Since the cleaning of the bar screen is done in a continuous fashion, debris is removed from the channel at a pretty fast pass. This provision allows for a greater screening capacity from the unit.

The continuous belt bar screen elements are either supported with a lower sprocket or a guide rail. The screen is designed to have the ability to pivot out of the channel for maintenance. One disadvantage to this bar screen is the fact that carry over may occur because of the front clean/ rear return configuration.

Reciprocating Rake Bar Screens

Catenary Bar Screens

Continuous Belt Bar Screens

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References - Books:

David H. F. Liu, Bela G. Liptak. 2000. Wastewater Treatment. Lewis Publishers.

Mackenzie L. Davis, Susan J. Masten. 2004. Principles of Environmental Engineering and Science. McGraw Hill, Inc.

Tom D. Reynolds, Paul A. Richards. 1996. Unit Operations And Processes In Environmental Engineering. PWS Publishing Company.

Water Environmental Federation. 1998. Design of Municipal Wastewater Treatment Plants - MOP 8, 4th Edition. ASCE.

Metcalf & Eddy Inc., George Tchobanoglous, Franklin L Burton, and H. Davide Stensel. 2002. Wastewater Engineering - Treatment and Reuse, McGraw Hill.

Always consult with the manufacturer or your local equipment representative if you have specific questions about bar screens. This site is done by a random individual to help get you informed, but is not to substitute for professional opinion. Please read our disclaimer.