GHD has been selected as the lead designer for AlexRenew’s Nutrient Reduction Project. The multi-year effort will modernize critical wastewater treatment infrastructure at AlexRenew, enhance nutrient removal performance and expand treatment capacity.
The project will be delivered through Progressive Design-Build, with GHD serving as the design consultant for Design-Builder Kokosing Industrial, Inc. (Columbus, Ohio).
AlexRenew operates and maintains the sewage treatment system serving a population of about 300,000 for the City of Alexandria and a large portion of Northern Virginia’s Fairfax County. The new project will upgrade AlexRenew’s Water Resource Recovery Facility, which is currently permitted for an average daily flow of 54 million gallons per day (mgd).
Specifically, the nutrient reduction project will:
- Replace or rehabilitate tertiary settling tanks and other aging equipment.
- Convert existing filters to denitrification filters and construct up to six additional units.
- Upgrade the biological reactor basins to support full nitrification.
- Improve nutrient removal performance to meet state permit limits.
- Provide an additional 4 mgd of capacity needed for future growth.
Renewing Systems and Culture with Asset Management at AlexRenew
“GHD is proud to partner with AlexRenew on a project that will strengthen water quality and support the community for decades to come,” said Chris Hunter, GHD Americas CEO. “Our team brings deep expertise in nutrient reduction and complex treatment upgrades, and we look forward to working collaboratively with Kokosing and AlexRenew to deliver a resilient, future-ready solution.”
Completion of the project is anticipated in 2032.
GHD is a professional services company operating in the global markets of water, energy and resources, environment, property and buildings, and transportation. Established in 1928 and privately owned by its people, GHD’s network of 12,000+ professionals is connected across 160 offices on five continents.
Source: GHD
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