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Filtrate Treatment Facility

Washington, DC

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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