Wastewater Treatment Plant Upgrades

 LOCATION: Morristown, Tennessee

 KEY PERSONNEL:

• Steve Bostic
• Glenn Hanson
• Jim Albert

 DATES: 2012-2015

  COST: $6.3 Million

 PROJECT HIGHLIGHTS:

• New Plant SCADA System
• Emergency Power
• Complete Electrical Rehabilitation
• Digesters Converted from Anaerobic to Aerobic
• Increased Efficiency
• SRF Funding

The City of Morristown’s Turkey Creek Wastewater Treatment Plant (WWTP) is in urgent need of repairs and upgrades to the operation system.  The City is under an Order from the State of Tennessee to repair the collection system that is experiencing wet-weather sanitary sewer overflows (SSOs).  In addition to the SSOs, a number of code violations were also found within the plant’s electrical system.  LDA developed several alternatives to solving the existing problems, and a final alternative was selected.  LDA has now joined the City in undertaking major renovations to the plant that include:

• Replacing existing pumps, motors, valves, and piping in the influent pump station with high efficiency pumps and motors
• Installing variable frequency drive (VFD) motors
• Biotower removed from service due to inefficiency
• Replacing intermediate pumps, motors, and valves with smaller pumps and VFD motors
• Converting the digesters from anerobic to aerobic process
• Diverting the waste activated sludge (WAS) pumping from the primary settling to the primary digesters and 2 new progressive cavity pumps and motors in the WAS station
• New plant SCADA for central monitoring
• New electrical switchgear and influent flow meter
• New generator and automatic transfer switches to establish emergency power
• New press feed meters and WAS meter
• New sludge press feed pumps added to provide feed rates to match press capacities

The program is expected to be completed in 2017, and the City is using a number of funding sources to complete the program.  Funds obtained from a previous bond issue for upgrades will be used, as well as funds obtained from a SRF loan.