Bismarck Water Treatment Facility – Filter Upgrade & Equipment Improvements

Project Number: 0413

Final Contract: $2,900,000

Actual Completion: 2006
Owner: City of Bismarck, North Dakota

Engineer: AE2S

Project Details
  • 30 MGD Rated Capacity … 9.35 MGD Average Daily Production
  • New High Lift Pump
    • Removal of Existing High Lift Pump No. 2
    • Installation of New 300 HP High Lift Pump No. 2
  • New Lime Feed System
    • Sequenced Removal of Existing Lime Feed System
    • New 1,000 lb & 2,000 lb Paste Type Lime Slakers
    • Mods to Lime Bin Including Bin Activator and Isolation Feed Valves
    • New 6 MGD & New 12 MGD Lime Feed Transfer Conveyor
    • New Loss-In-Weight Feeder System
    • New Slaking System Local Control Panel
  • Renovation of 14 Filters
    • Conversion of Nine Single-Bay & Five Dual-Bay Rapid Rate Filters to High Rate Filters
  • Designed for a Maximum Loading of Not Less Than 6 gpm/sf
    • Removal of Existing Filter Troughs, Media, Surface Wash & Underdrain
    • Major Demolition Work & Structural Mods to Existing Filters to Accommodate the New Filter Equipment
    • Installation of New Dual-Parallel Underdrain Block
  • 5,018 SF of Filter Area
    • Field Fabrication & Installation of New Stainless Steel Surface Wash Piping
  • 114 Rotating Type Surface Wash Agitators
    • Installation of 64 Stainless Steel Backwash Troughs
    • Installation of 15-inches of Filter Sand & 28-inches of Anthracite @ Each Filter Cell
  • Over 18,400 CF of Media Installed
  • Installation of Numerous Access Hatches & FRP Ladder Assemblies into Submersed Tank Areas
  • Demolition & Removal of Existing Concrete Lime Grit Bin
  • Installation of New Sample Water System Including Booster Pumps & Associated Piping
  • Numerous Piping Removals & Modifications Including:
    • 16-inch Raw Water Pipe Improvements
    • 16-inch Low Lift Pump Improvements
    • 24-inch Intake Gallery Pipe Improvements
    • 18-inch Clearwell Overflow Improvements
    • 16-inch Filter Influent & 20-inch Effluent Improvements
    • 24-inch Finished Water Magnetic Flow Meter Improvement
    • Sub-Gallery Sump Pump System