Screen – Duperon FlexRake IQ


A Simple Solution to Smarter Raking for Responsive Resiliency
Municipal wastewater facilities are experiencing increased demands and looking for more resilient solutions. One-hundred-year storms are occurring more frequently with bigger peaking events. There is increased inflow and infiltration (I&I) from aging infrastructure. “Flushable” wipes, grit and first flush debris add stress on treatment systems. Even the coronavirus pandemic is changing wastewater composition and diurnal flow patterns. Duperon recognized systemwide resilience begins at the headworks and a new level of raking is required to meet today’s (and tomorrow’s) plant challenges.


Designed with a patent-pending sequence technology that delivers 4 times greater debris removal. The FlexRake IQ enhances solids handling by sensing conditions and speeding up – or slowing down – to accommodate changing debris and flow in real time. The scrapers have an enhanced tooth profile and unique collection geometry that handle stones and remove solids cleaned at the higher speed. Large debris is still managed without shutdown and the re-imagined FlexLink™ system ensures that scrapers return to cleaning the screen field faster.

The FlexRake IQ makes these adjustments automatically, without operator intervention. System function returns to normal as soon as operating conditions allow, extending the life of mechanical components.

The original FlexRake® transformed preliminary liquids/solids separation with its simple design that had no in-channel maintenance and ability to adapt to debris. In the tradition of Duperon simplicity, we are now offering a new level of resilient screening. With the FlexRake IQ, we have reimagined components and sequencing to improve screening during normal flow while sensing and responding to solids events…without sacrificing the simplicity, ease of operation, and low cost of ownership associated with Duperon technology.

The FlexRake IQ: designed to deliver a greater range of flexibility over the broadest range of conditions.