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DC Water Main Process Train

DC Water recently completed work at the Main Process Train of the Blue Plains Advanced Wastewater Treatment Plant. The design-build project included the rehabilitation of four solids blending tanks, installation of 12 new strain screens in a new screenings building, a pre-dewatering building that houses 10 pre-dewatering centrifuges, four trains of Cambri’s thermal hydrolysis treatment (THP), a digester building including pumping and cooling heat exchangers, and the construction of four 3.8 gallon digesters and associated odor control equipment.

 

DMY provided construction materials testing and special inspection services. The work included field and laboratory testing for soil and aggregate, concrete and grout sampling testing, and inspection of the installation of 477 auger-cast-piles and 144 drilled piers. This was the first project where DMY implemented DMY Manager®, its web-based electronic management and report system. This system allowed DMY engineers and field staff to efficiently manage the project and effectively control the quality of the deliverables.

 

Project Location – Washington, DC

Project Owner – DC Water

Project Client – PC Construction/CDM Joint Venture

Project Completion – 2015 (Projected)

 

 

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DC Water – Biosolids Management Combined Heat and Power Plant

The Combined Heat and Power (CHP) project will make the Blue Plains Advanced Wastewater Treatment Plant (AWTP) the first in North America to use biogas from an AWTP facility.  The design-build portion of the CHP project is for $81 million and, upon completion; it will produce at least 14 MW of electric power that will supply the Blue Plains facility with nearly 30 percent of the AWTP’s average power demand. This is equal to the electricity required to power more than 8,000 homes.

 

The plant will also include three Solar Mercury 50 low nitrogen oxide gas turbines, digester gas cleaning and compression equipment, heat recovery steam generators, duct burners, a backup boiler, and electrical equipment needed to operate in parallel with the utility grid and ancillary systems.

 

DMY is currently working on this project providing special inspection and construction materials testing services which include field and laboratory testing for soil and aggregate, concrete and grout sampling and testing, and inspection of the installation of auger-cast-piles.  Structural steel inspection is also a major part of special inspection services.

 

Project Location – Washington, DC
Project Owner – DC Water
Project Client – PEPCO
Project Completion – 2013

 

 

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