Upgrade, Expansion, and Energy Cost Savings: 60-mgd Neuse River WWTP Client: City of Raleigh Location: Raleigh, NC Rapid residential development in the City of Raleigh brought about the need for the improvement and phased expansion of the Neuse River facility. Improvements included a new equalization basin to handle wet weather ows, facilities for total nitrogen removal, a sludge management plan, and conversion of the existing chlorine contact tanks to ultraviolet disinfection. Hazen and Sawyer was contracted to complete these upgrades and to perform an energy audit to identify eciency improvements and reduce the facility’s energy costs. Project Outcomes and Benefits 20% annual savings in energy costs as a result of eciency improvements in treatment process. Phased schedule of constru

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