Evoqua Water Technologies has upgraded the wastewater treatment system for the City of Prattville in Alabama, USA.
By installing Evoqua technology, the city is addressing biological nutrient removal and accommodating future population growth.
An Evoqua VertiCel® System was incorporated into Prattville’s wastewater treatment system, which included tanks with fine bubble diffusers, to achieve additional capacity and meet nutrient removal requirements. The VertiCel system uses Evoqua’s VLR® Vertical Loop Reactors operated in series that allow dissolved oxidation stratification at the front of the process combined with fine bubble tanks at the end of the process to maximize energy efficiency and process flexibility.
Prattville’s treatment plant consisted of three parallel single reactor aeration basins with a capacity of three million gallons per day (MGD) along with three circular clarifiers. Evoqua’s VertiCel Biological Treatment System expands capacity to 5.7 MGD, while providing the ability to achieve nitrogen and phosphorus removal limits. The VertiCel system allowed the municipality to reuse the existing parallel aeration basins and add fine bubble diffusers.
The three circular clarifiers for this treatment system were rehabilitated to Evoqua’s Tow-Bro™ Circular Clarifier design with one Tow-Bro clarifier constructed. The overall treatment process will use Evoqua’s SmartBNR™ control system to enhance operational reliability and reduce energy costs.
Engineers of the South worked with Evoqua to provide the engineering and design with Brasfield & Gorrie as the general contractors. Evoqua secured the project through its partner Jim House & Associates.
