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Coarse Screens

2024-07-13

Coarse screens remove rags, sticks, large solids and other debris ranging from 0.25 to 6 inches. They can be as simple as a trash rack or as complicated as a mechanically cleaned bar screen. Generally speaking, larger treatment facilities will install a mechanically cleaned bar screen whereas small, outdated facilities are likely to use a manually cleaned bar screen.

Manually cleaned bar screens require little to no mechanical maintenance, but do require routine cleaning by an operator. If you speak with a wastewater operator who works at a facility with a manually cleaned bar screen, I bet he'll tell you that one of his least favorite job duties is cleaning out the bar screen. With that said, the majority of treatment facilities are gravitating towards automated, mechanically cleaned bar screens for the following reasons: They produce a higher screening capture rateProvide improved flow conditions through the screenBecause they automatically remove solids, manual cleaning is not required

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