The Brackett Green CF200 band screen has been designed for primary water treatment applications where screening within the range of 2mm to 10mm diameter holes is required. The range is designed and suitable for flows from 500-5000 l/sec, sumps as deep as 15m and channel widths of 1.0m and above. Brackett Green CF band screens are used at both Headworks and as Pre-membrane protection screens.
Individually tailored for each installation, the Brackett Green CF200 band screens are suited to new treatment works and optimizing screening performance within existing plants, usually with minimum modification.
Brackett Green CF200 features:
The CF200 band screen adopts a central flow pattern, i.e. water enters the center of the screen, flows through the bottom and two sides of the moving band of screen panels, to the outside of the screen chamber where they recombine and flow downstream. Research has proved the central flow principle is the most effective means of removing suspended solids for waste water applications.
Screenings are retained on the inside of the screen panels and are dischargedwhen the panels elevate to deck level where they are cleaned by low pressure water jets.
The design has been standardised so that the machine is available in a range of front opening and screening panel width increments.
Debris elevation is by means of an endless moving band of screening panels through which the water passes. Debris collected on the mesh panels is raised to deck level and removed by backwashing with wash water jets. The wash water and debris is discharged from the screen via a launder channel.
Main chains, supported by two sprockets above deck, carry the screening band. The main chains run in guide sections fitted with replaceable and/or sacrificial stainless steel guides to allow quick in situ replacement when worn, located in a self supporting fabricated frame.
Drive is provided by an electric motor through a shaft - mounted reduction worm gear unit.
The CF200 band screen incorporates drilled uPVC or moulded polyurethane mesh panels with round holes. Sizes range from 2mm diameter to 10mm diameter apertures.
To prevent solids bypassing the band screen, a contact seal is utilised.