Once the City of Selkirk identified they were going to build their new wastewater treatment plant around Membrane Bioreactor (MBR) technology, they knew they needed to equip their headworks building with the best screening and grit removal technologies available. Waste’n WaterTech was able to work with AECOM early in the design process to come up with a design that was both robust and highly efficient, even at the expected 36 MLD peak flows. The result is a state-of-the-art headworks consisting of:
• Two FSM 6mm bar screens with associated wash presses
• Two SAVI 1mm Flo-Drum screens providing industry leading 92% Screenings Capture Ratio
• One 12ft diameter, 9-tray Hydro International Headcell providing industry leading 95% capture rate of all grit greater than 75 micron
• One Teacup-Grit Snail washing-dewatering unit delivering dewatered grit consisting of greater than 60% solids, and less than 20% organics content
An Investment in headworks equipment is about protecting critical, and sometimes expensive downstream processes. The City of Selkirk will reap the benefits of their foresight for years to come!