Balfour Beatty is currently serving as the general contractor responsible for upgrading the existing Lake Kilby Water Treatment Facility. The upgrades will improve the water treatment process so that drinking water produced at the plant will meet current provisions of the Safe Drinking Water Act Amendments and Virginia Department of Health regulations at its present capacity.
The work involves the demolition of existing sedimentation basins, demolition of existing filters, new structural concrete, process mechanical and electrical work. The construction work is divided into two phases.
Phase I includes the addition of a new filter building to replace the existing filter buildings. The new filter building will also contain a backwash supply tank which will be located below filters 1, 3, 5 and 7. Three backwash supply vertical turbine pumps will be located on the on the east side of the filter building. The upper floor of the filter building will contain a control room, operations laboratory, analyzer room, two offices, break room, locker room, electrical room, and bathrooms. Two new filter backwash waste tanks will be constructed south of the new filter building.
A new electrical building will be installed east of the filter backwash waste tanks. New 48-inch and 36-inch settled water pipes will be installed to supply water from the existing clarifiers to the wet wells of the settled water pump station. The new settled water pump station includes an influent channel and two wet wells with sluice gates.
Phase II will add a new UV disinfection building that will be constructed in the existing Filter Building 11-16.
The project is projected to be complete in October 2019.