Treatment Plant Odor Control

odor control equipment
The Town is installing a new odor control system at Utley Creek wastewater treatment plant. These facilities will treat odor-causing sulfur compounds through biological and chemical means. Project highlights include:

  • New airtight covers on existing treatment structures to prevent odors from escaping
  • New biofilter with microorganisms to consume odor-causing compounds or render them odorless, plus activated carbon tanks for additional treatment. 
  • Replacement of some equipment for compatibility with new system. This includes a new bar screen, a device 25 feet long by 8 feet wide that removes debris
  • Structural repairs, including concrete corroded over time by hydrogen sulfide.   

Anticipated Completion: July 2020
Project Cost: Approximately $5 million (design, construction & contingency)

Primary Benefits

  • Improve air quality for Morgan Park subdivision and for future residential areas, commercial areas, and greenways in vicinity of treatment plant
  • Prolong life of treatment plant structures by reducing concrete corrosion related to
    odor-causing compounds
  • Bring facility up to date with standard odor control practices

Odor Control Program Timeline

  • Early 2000's - Odor control efforts begin with chemical treatment at a few wastewater pumping stations.
  • 2016 - Growing odor problems on the west side of town lead to the addition of odor control systems at the 12 Oaks, Holly Springs Business Park, and Avent Ferry pump stations. Water Quality staff and Morgan Park residents in contact about odor issues.
  • July 2017 - A small biofilter is added at the Utley Creek plant.
  • December 2017 - In response to continuing odor issues, Town Council approves an engineering study to identify odor-causing compounds and their concentration.
  • July 2018 - Study results indicate nuisance levels of hydrogen sulfide and related compounds at the headworks, the preliminary treatment unit at the Utley Creek plant.
  • March 2019 - Design of odor control system completed.
  • May 2019 - Town Council approves project bid award.