Affordable Headworks Screening Solutions For Low-Flow Applications

Most wastewater treatment plants in the U.S. operate at under 1 MGD, forcing small facilities to manage highly inconsistent flows that can fluctuate from a daily trickle to storm-driven surges exceeding 6 MGD. These conditions strain traditional static bar screens, sediment ponds, and other low-cost methods that require manual labor, pose safety risks, and cannot reliably handle extremes in velocity or solids loading. Purpose-built screening technologies address these challenges by stabilizing upstream water levels, reducing turbulence, and enabling automatic response to peak events. The Duperon FlexRake Low Flow System uses an underflow weir to maintain sufficient water depth, teardrop bars to minimize head loss, and surge-responsive controls to prevent blinding during first-flush events. Durable UHMW components withstand extended dry periods and reduce mechanical wear, while installation features accommodate narrow channels. Paired with an integrated Low Flow Washer Compactor that washes, dewaters, and compacts debris — reducing volume by 80% and weight by 60% — the system enhances safety, lowers hauling costs, and improves downstream biological treatment. Together, these solutions transform low-flow unpredictability into reliable, cost-effective performance.