The screen belt geometry enables the best capture rate of screenings. Clean side and dirty side strictly separated, and so a “taking over” effect of solids on the clean water side is excluded. Innovative screening elements, such as the perforated screening element, which is multi head drilled, or the nature-inspired honeycomb screening element generate extremely high open area (up to 90%) and thus reduce the operating headloss and enable significantly higher throughput. The modular design of the band screen allows optimized design to suit the channel depth, flow rate and operating levels. The Centre-Flo™ CF band screen can also be designed to incorporate a rear by-pass gate that will allow by-passing in the absence of a by-pass weir upstream of the unit.