DESIGN-BUILD INSTALLATION OF SIX REDUNDANT ULTRAVIOLET REACTORS INCLUDING STAINLESS-STEEL PROCESS PIPING, ISOLATION AND AIR-RELEASE VALVES, POWER AND CONTROL CABINETS, PLC AND RTU CONTROLS, SCADA INTEGRATION, MCC MODIFICATIONS.
Johnston Construction Company
- Johnston Construction Company provided design-build services for a redundant ultraviolet disinfection system at the Fort Meade Wastewater Treatment Plant.
- The project was developed to maintain continuous effluent disinfection if an electrical failure, controls malfunction, flood event, maintenance activity, or other system issue rendered the existing ultraviolet equipment ineffective.
- The redundant system was designed to treat wastewater flows ranging from approximately 0.5 million gallons per day to a peak flow of 2 million gallons per day.
- JCC provided six ultraviolet reactors, with one reactor installed on each 12-inch outlet pipe serving the existing sand filters inside the WWTP Filter Building.
- The reactors were designed for submerged, full-pipe wastewater service and incorporated 316L stainless-steel piping with ANSI 150 flanged connections.
Electrical Services Division
- Electrical Services Division, LLC performed the electrical construction associated with the new redundant ultraviolet disinfection system at the Fort Meade Wastewater Treatment Plant.
- The overall design-build project installed six new ultraviolet reactors on the outlet piping from the existing sand filters inside the WWTP Filter Building.
- The redundant UV system was designed to help maintain continuous effluent disinfection if the existing ultraviolet equipment became unavailable because of electrical failure, controls malfunction, maintenance, or another system interruption.
- ESD furnished the labor, materials, tools, supervision, conduit, wiring, boxes, devices, switchgear, and electrical connections required for the new UV equipment.
- The electrical scope included two new 200-amp lighting panelboards serving the redundant ultraviolet system.
Additional project details
- The purpose of the project was to provide redundancy to the wastewater treatment plant’s existing ultraviolet disinfection process.