Milhouse provided electrical engineering design and construction management services for the District of Columbia Water and Sewer Authority’s (DC Water) Blue Plains Advanced Wastewater Treatment Plant (AWTP) Filtrate Treatment Facility (FTF) project. The AWTP treats an average of 370 mgd of wastewater from the metropolitan Washington, D.C., area. It is the largest AWTP in the world.
The FTF project included design of a new sidestream treatment system for removal of ammonia-nitrogen and carbonaceous biological degradable from belt filter press filtrate discharged from the Final Dewatering Facility (FDF). The FTF incorporated sequencing batch reactors (SBRs) and support systems to reduce ammonia-nitrogen and BOD loading returned to the Main Process Train. The SBRs are designed with flexibility to operate in either of two process configurations, Nitration-Denitration (N-DN) or Deammoniafication (DEMON®).
The electrical engineering design services for the FTF included a new medium voltage substation to supply power to the FTF, power distribution for all FTF electrical requirements, including process and building systems, instrumentation and controls raceways and conductors, interior and exterior lighting, motor controls and adjustable frequency drives, harmonics correction systems, security systems, telephone and intercom systems, lightning protection systems, fire alarm systems, underground duct banks for electrical power, instrumentation and communications cables and conduit and wire schedules for power, instrument, control system wiring. Milhouse also performed load flow, short circuit, coordination and arc flash studies for the project.
Milhouse met an aggressive schedule for 30% completion of housing for electrical apparatus by adding staff and closely collaborating with multiple equipment manufacturers.
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