Which screen type is designed for mechanical cleaning in water treatment processes?

Band screens are specifically designed for mechanical cleaning in water treatment processes due to their efficient operation and ability to handle varying flow rates while removing solids from water. They consist of a series of closely spaced parallel bars that form a continuous screen. As water flows through, debris is captured, and the design allows for the mechanical cleaning of the screen surface.

The mechanical cleaning system, often equipped with brushes or mechanical rakes, automatically removes collected solids from the screen, preventing clogging. This reduces the need for manual cleaning and maintains consistent operational efficiency in water treatment facilities.

In contrast, other screen types, such as coarse screens and bar racks, may not have the same level of automated cleaning capability. Coarse screens are primarily used for the initial removal of large debris, while bar racks are often more passive in their operations. Wing screens, designed for specific uses, may lack the general mechanical cleaning features found in band screen systems.