Page 7 - Sept/Oct 2015 Vol.33 No.3
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trict as part of the match required for the Second, with assistance from a CTEG water from Shoal Creek. The second is
grant including a new cast-in-place high grant, the Cumberland Utility District was Hope Springs, which withdraws ground-
service pumping station structure and a able to achieve an estimated 40 percent water from Hope Spring. With a popula-
new backwash pump. These new pumps reduction in power consumption at the tion of 14,000, Lawrenceburg received a
replaced a pumping station that was in more than 60-year-old Brushy Moun- CTEG grant for the Hope Springs plant
very poor condition. tain facility. This was achieved through to replace current pump motors with
upgrades to the service and backwash new premium efficiency motors and VFD
Cumberland Utility District pumps. In addition, the Brushy Mountain motor controls. The upgraded motors
Water Treatment Facility increased their and controls will help process some 2
With the primary facility located in water supply capabilities from 2.5 to 4 million gallons of water per day, as well
Harriman, Tennessee, the Cumberland million gallons per day. as controlling the amount of surface
Utility District began operation in 1961 by overflow from the groundwater source to
supplying safe drinking water to the rural The older pumps were either turned Shoal Creek. Surface overflow was previ-
areas of Roane and Morgan Counties. “on,” operating at maximum power and ously regulated by manual controls and
Drawing raw water from the Little Emory energy consumption, or “off.” Using a was highly energy inefficient.
River, their customer base has grown from VFD pump increases power gradually
690 to more than 4,500 customers. rather than immediately switching to full The more efficient pump system al-
power, allowing energy consumption to lows for better service without increasing
The Cumberland Utility District be decreased. The decrease in mechanical customer rates. The post-project utility
recently acquired their second water and electrical stress on the motor, with power savings are about 9,000 kilowatts
treatment facility – Brushy Mountain gradual power up, also reduces repair and and a cost savings of about $600 monthly.
– which enabled them to implement a maintenance cost while extending the life EPA’s Emissions Reduction Calcula-
more energy-efficient approach to water expectancy of the motor. tor estimates the new system could help
treatment and distribution. They entered reduce greenhouse gases by 117 pounds
into a lease agreement with the Tennessee With the addition of the new plant of nitrogen oxides, 367 pounds of sulfur
Department of Correction in June of 2012 and the renovations, Cumberland Utility dioxide, and about 155,000 pounds of
that allowed them to occupy and operate District is on target to meet the projected carbon dioxide.
the facility. project goal of $127,000 in annual energy
cost savings as well as about $2.5 million “The Tennessee Department of Envi-
The Cumberland Utility District’s in savings over the next 20 years. The ronment and Conservation is pleased to
energy-efficiency approach was two-fold. reduction in energy use at the treatment see these utilities take advantage of our
First, the water distributed from the main facility could also indirectly improve air Clean Tennessee Energy Grants to make
storage tank had to travel through two quality because much of the electricity in system upgrades that will benefit the
booster pump stations to reach the 800 East Tennessee is produced with coal. environment and the public,” said Deputy
foot elevated Petros tank for distribu- Commissioner Shari Meghreblian of the
tion. With the Brushy Mountain facility Lawrenceburg Utility System Tennessee Department of Environment
producing water locally for Petros and the and Conservation. “These improvements
surrounding area, the booster pump sta- Located in Lawrence County just will reduce greenhouse gas emissions as
tions were no longer needed. Now water southwest of Nashville, the City of well as save energy and taxpayer dollars.”
is pumped directly to the higher elevation Lawrenceburg is positioned along Shoal
Petros tank and distributed by gravity, in- Creek. The Lawrenceburg Utility System For more information about CTEG go
stead of pumps, to the Coalfield and Bitter has two plants in operation. The first is to http://www.tn.gov/environment/article/
Creek storage tanks. a surface water facility that withdraws grants-clean-tennessee-energy-grants.
4 56
4. New automated, motorized control valves at Cumberland Utility District’s Brushy Mountain Water Treatment Plant will contribute to energy savings.
5. Variable Frequency Drives, installed at the Lawrenceburg Utility System’s Hope Springs facility, were part of the facility’s new efficient pumping
system. 6. The new efficient pumping system at LUS’s Hope Springs facility resulted in a savings of $600 per month and allowed for better service
without increasing customer rates. (Photo credit Roger Morse, Griggs & Maloney Inc.)
View online at tnpublicworks.com 7
grant including a new cast-in-place high grant, the Cumberland Utility District was Hope Springs, which withdraws ground-
service pumping station structure and a able to achieve an estimated 40 percent water from Hope Spring. With a popula-
new backwash pump. These new pumps reduction in power consumption at the tion of 14,000, Lawrenceburg received a
replaced a pumping station that was in more than 60-year-old Brushy Moun- CTEG grant for the Hope Springs plant
very poor condition. tain facility. This was achieved through to replace current pump motors with
upgrades to the service and backwash new premium efficiency motors and VFD
Cumberland Utility District pumps. In addition, the Brushy Mountain motor controls. The upgraded motors
Water Treatment Facility increased their and controls will help process some 2
With the primary facility located in water supply capabilities from 2.5 to 4 million gallons of water per day, as well
Harriman, Tennessee, the Cumberland million gallons per day. as controlling the amount of surface
Utility District began operation in 1961 by overflow from the groundwater source to
supplying safe drinking water to the rural The older pumps were either turned Shoal Creek. Surface overflow was previ-
areas of Roane and Morgan Counties. “on,” operating at maximum power and ously regulated by manual controls and
Drawing raw water from the Little Emory energy consumption, or “off.” Using a was highly energy inefficient.
River, their customer base has grown from VFD pump increases power gradually
690 to more than 4,500 customers. rather than immediately switching to full The more efficient pump system al-
power, allowing energy consumption to lows for better service without increasing
The Cumberland Utility District be decreased. The decrease in mechanical customer rates. The post-project utility
recently acquired their second water and electrical stress on the motor, with power savings are about 9,000 kilowatts
treatment facility – Brushy Mountain gradual power up, also reduces repair and and a cost savings of about $600 monthly.
– which enabled them to implement a maintenance cost while extending the life EPA’s Emissions Reduction Calcula-
more energy-efficient approach to water expectancy of the motor. tor estimates the new system could help
treatment and distribution. They entered reduce greenhouse gases by 117 pounds
into a lease agreement with the Tennessee With the addition of the new plant of nitrogen oxides, 367 pounds of sulfur
Department of Correction in June of 2012 and the renovations, Cumberland Utility dioxide, and about 155,000 pounds of
that allowed them to occupy and operate District is on target to meet the projected carbon dioxide.
the facility. project goal of $127,000 in annual energy
cost savings as well as about $2.5 million “The Tennessee Department of Envi-
The Cumberland Utility District’s in savings over the next 20 years. The ronment and Conservation is pleased to
energy-efficiency approach was two-fold. reduction in energy use at the treatment see these utilities take advantage of our
First, the water distributed from the main facility could also indirectly improve air Clean Tennessee Energy Grants to make
storage tank had to travel through two quality because much of the electricity in system upgrades that will benefit the
booster pump stations to reach the 800 East Tennessee is produced with coal. environment and the public,” said Deputy
foot elevated Petros tank for distribu- Commissioner Shari Meghreblian of the
tion. With the Brushy Mountain facility Lawrenceburg Utility System Tennessee Department of Environment
producing water locally for Petros and the and Conservation. “These improvements
surrounding area, the booster pump sta- Located in Lawrence County just will reduce greenhouse gas emissions as
tions were no longer needed. Now water southwest of Nashville, the City of well as save energy and taxpayer dollars.”
is pumped directly to the higher elevation Lawrenceburg is positioned along Shoal
Petros tank and distributed by gravity, in- Creek. The Lawrenceburg Utility System For more information about CTEG go
stead of pumps, to the Coalfield and Bitter has two plants in operation. The first is to http://www.tn.gov/environment/article/
Creek storage tanks. a surface water facility that withdraws grants-clean-tennessee-energy-grants.
4 56
4. New automated, motorized control valves at Cumberland Utility District’s Brushy Mountain Water Treatment Plant will contribute to energy savings.
5. Variable Frequency Drives, installed at the Lawrenceburg Utility System’s Hope Springs facility, were part of the facility’s new efficient pumping
system. 6. The new efficient pumping system at LUS’s Hope Springs facility resulted in a savings of $600 per month and allowed for better service
without increasing customer rates. (Photo credit Roger Morse, Griggs & Maloney Inc.)
View online at tnpublicworks.com 7
