Lakota WWTP UV Disinfection System Upgrade, Lakehaven Water & Sewer District

About

In partnership with Trane, an energy services company, BHC designed and helped implement improvements to the ultraviolet (UV) disinfection system at the Lakota WWTP.  The old UV system had become inefficient and was extremely labor intensive, requiring frequent manual cleaning of the numerous UV lamps.  The new UV disinfection system provides UV dose pacing for improved energy efficiency, automated cleaning of the UV lamps, and fewer higher efficiency lamps.  Modifications were made to existing concrete channels to install the new UV disinfection system, which included extension of the channels to allow future installation of twice as many UV banks.  This provides flexibility to add UV banks to meet potential stricter discharge limits, accommodate growth, and/or further increase system redundancy.

Features:

  • Drastically reduced labor requirements for maintenance of the UV disinfection system
  • Reduced energy consumption and increased disinfection performance
  • Design-build delivery method substantially reduced costs for the temporary chemical disinfection being used to supplement the old under-performing UV disinfection system

 

Lakota WWTP Turbo Blower Improvements, Lakehaven Water & Sewer District

About

BHC designed the complete replacement of three 250 HP positive displacement blowers for channel and process aeration with four new 150HP turbo blowers. The design included revisions to blower supply and discharge piping, new master control system, and in basin instrumentation. Thanks to this project, the District is now able to effectively monitor and control aeration in its basins while increasing aeration capacity, equipment redundancy, and turn-down capability.

Features:

  • Increased aeration capacity and redundancy
  • Reduced aeration energy consumption
  • Improved aeration system monitoring and control