Ovivo Double Entry Drum Screens at Yellow River WRF, Gwinnett County, GA – Customer Testimonial

“We completed the Yellow River WRF Improvements Project in 2012. This project replaced an aging 14.0 MGD Conventional Activated Sludge Facility with an Advanced 22.0 MGD MBR Facility. The MBR Facility includes GE/Zenon submerged fiber membrane for solids separation. The membrane manufacturer required at a minimum 2mm screening to protect the .04 micron membrane. We decided to purchase and install Ovivo Drum Screens and they have performed outstandingly. We have two stage screening. Just after our headworks that is protected by JWC Grinders, the Influent is pumped up to our Preliminary Building and into our 5mm Drum Screen. We have one duty, one standby each rated for 64 MGD. The 5 mm Drums were placed into service in December 2009. During that time we have replaced seals on drums twice and one drive unit gearbox. After preliminary screening, grit removal, and primary clarifiers we protect our Biological Basins and Membrane Tanks with two 2 mm Drums. One duty, one standby each rated at 32 MGD commissioned in April 2010. Other than routine PM’s we have not performed any corrective maintenance on the 2 mm Screen. Our average daily flow is 14.0 MGD and we remove approximately 12 to 15 tons of screenings a week. We quarterly drain and clean a Primary Clarifier, Annually clean a Bio-Basin and monthly inspect our MBR Cassettes and we have no evidence of screenings, rags or hair past our screening processes. Our MBR Facility is operating as well as (better than) any in the world and I attribute that a lot to the effectiveness of our Ovivo Drum Screens that protect our biological process and membrane solids separation.”

Ben Bagwell – Operations Superintendent – Gwinnett County – Yellow River WRF


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