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Plant by Plant: Columbus Utilities

Hours: 5 Technical Wastewater
Cost: $125 member/$175 non-member

Monday, September 28, 2026
9:00 AM - 3:00 PM (EDT)
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Course Description

This course provides participants with a comprehensive tour and operational overview of the Columbus City Utilities Wastewater Treatment Plant, a Class IV activated sludge facility rated for 14 million gallons per day (MGD). Attendees will gain a practical understanding of the treatment processes, equipment operation, solids handling systems, and regulatory requirements associated with modern municipal wastewater treatment. The course begins with a guided facility tour, allowing participants to observe the complete treatment process from influent reception through final effluent discharge and biosolids management. Emphasis is placed on understanding process flow, equipment function, operational challenges, and maintenance considerations.

Learning Objectives

Upon completion of this course, participants will be able to:

  • Describe the overall wastewater treatment process flow at the Columbus City Utilities Wastewater Treatment Plant from influent reception to final effluent discharge and solids disposal.
  • Identify the purpose and operation of the facility's preliminary treatment systems, including mechanical fine screens and grit removal tanks.
  • Explain the biological treatment process performed by the oxidation ditch activated sludge system.
  • Describe the function and operation of secondary clarifiers and their role in solids separation and effluent quality.
  • Identify the purpose of post-aeration and ultraviolet (UV) disinfection in meeting treatment and permit requirements.
  • Recognize key process control parameters that affect treatment efficiency and plant performance.
  • Explain the function and benefits of the Cannibal® Sludge Process for reducing biological solids production.
  • Describe the operation of the solids handling systems, including rotary drum sludge screens, sludge holding tanks, and centrifuges.
  • Discuss biosolids dewatering, handling, and landfill disposal practices used at the facility.

Moderators: Travis Calhoun, Columbus Utilities & Rex Blanton, AIRW

Registration Options

Credits Price
Member: In-person
Member attendee will attend in-person and receives CEUs.
5.00 (Technical Wastewater) $125.00
Non-member: In-person
Non-member attendees will attend in-person and receive CEUs.
*must login to member compass to receive member rates
 
5.00 (Technical Wastewater) $175.00

For More Information:

Alliance of Indiana Rural Water Logo 555 West Jefferson Street
Franklin, Indiana 46131
United States 3177894200