Nansemond Treatment Plant in Suffolk, Virginia

Project Summary:

Nansemond Treatment Plant Advanced Nutrient Reduction Improvements Phase II

Owner: Hampton Roads Sanitation District (HRSD)
Buyer: Garney Construction
Project Engineer: Tetra Tech, Inc.

Project Overview

The Nansemond Treatment Plant Advanced Nutrient Reduction Improvements Phase II (NP013820) project focuses on enhancing the efficiency and reliability of wastewater management systems at the Nansemond facility in Suffolk, Virginia. This initiative involves the installation of Flow Optimizer NRCY Vortex Suppression Ribs, Elevated Fillets, and Conditioning Wall Vanes within the pump station. These components are designed to minimize flow turbulence, eliminate vortex formation, and improve the overall performance of the facility’s pumping systems. The project, overseen by Tetra Tech and Garney Construction, reflects a commitment to supporting the growing needs of the Hampton Roads Sanitation District and improving environmental outcomes for the Chesapeake Bay watershed

Huntersville, NC - Clark’s Creek floor cones

Key Components

These Flow Optimizer components are tailored to improve the efficiency and reliability of wastewater management systems at the Nansemond WWTP.

NRCY Vortex Suppression Ribs: Installed within pump chambers to suppress vortex formation and enhance flow stability​

Elevated Fillets: Positioned within pump chambers to improve flow conditioning by reducing turbulence and aiding efficient fluid movement​

Conditioning Wall Vanes: Custom-built to minimize flow disruptions and optimize hydraulic performance

Flow Conditioning Floor Cones: Installed beneath pump suction bells to eliminate floor vortex activity, minimize pre-swirl, and streamline fluid flow​

Flow Optimizer Elevated Corner Fillet

  • Reduce operational inefficiencies caused by turbulence.
  • Improve fluid dynamics in confined spaces.
  • Extend the operational life of pumping equipment by reducing stress caused by inconsistent flow patterns.

 

Flow Optimizer Wall Vanes

  • Optimize Pump Intake Hydraulics in existing wetwells
  • Improved Hydraulics in wetwells with pump upgrades.
  • Reduced Turbulence including Surface & subsurface Vortices
  • Prevents Sidewall & Backwall Vortex Activity

 

Flow Optimizer Floor Cone

  • Floor Cones are designed to create smooth, stable streamlines, reducing head loss effectively.
  • Floor Cones are designed to prevent and eliminate submerged vortices
  • Floor Cones with vertical vanes are preferred for inhibiting pre-rotation.

 

The Nansemond Treatment Plant Advanced Nutrient Reduction Improvements Phase II project, managed by the Hampton Roads Sanitation District (HRSD), focuses on enhancing wastewater management efficiency and reliability.

Key project stakeholders include:

  • Flow Optimizers, LLC: Designed and manufactured advanced flow conditioning components such as vortex suppression ribs, elevated fillets, and wall vanes to optimize hydraulic performance.
  • Tetra Tech, Inc.: Provided engineering services, ensuring compliance with design and technical specifications.
  • Garney Construction: Led the procurement and installation of the components, ensuring the project met its operational goals.

This initiative incorporates innovative flow conditioning technologies to support environmental sustainability and operational excellence at the Nansemond facility in Suffolk, Virginia.