Page 13 - Sept/Oct 2018 Vol 36 No 3
P. 13
water intake was constructed with raw Mark Your Calendars!
water traveling screens. Fluoride was
added to the drinking water in 1953 to TCAPWA/SWANA ANNUAL CONFERENCE
promote dental health.
Historic Omohundro Water Treatment Plant Tour
With the addition of the 12 filters in Monday, October 22 – 2:30-3:30 p.m.
1956, a grit tank, flash mix, five two-
stage flocculators, and a new clarifier for flow pacing chemicals, and new new raw water screens and flood control
were also added. Aerators were added chemical feed systems. systems. In 2016, Metro Water Services
prior to the grit tanks for additional replaced the chlorine gas systems with
oxidation. The treatment plant was rated In 2010, flooding in Nashville onsite generated hypochlorite systems
for 50 MGD but could hydraulically submerged K.R. Harrington and took for disinfection, which mitigates all
push more water through the plant the plant offline for several weeks. The chlorine gas risks at the plants and
and out to the city. The conventional historic Omohundro Water Treatment surrounding communities.
treatment process became the standard Plant, built to last, was just inches away
for the city, and a second conventional from flooding, and with dedicated MWS Since 1889 and 1929 respectively, the
treatment plant (K.R. Harrington WTP) staff was able to continue supplying historic George Reyer Pump Station
rated at 60 MGD was constructed water to the city through this period. and Omohundro Water Treatment Plant
upstream on the Cumberland River in have been and will continue to be a
1974 and expanded to 90 MGD in 1992. It became clear after the flood that critical part of Nashville’s infrastructure.
you cannot predict when you will see Both are among Nashville’s oldest
In 1984, a new raw water intake Mother Nature’s fury, but you need to landmarks and were listed on the
was added to Omohundro due to be prepared for it. Flood mitigation National Register of Historic Places in
hydraulic restrictions in the pipeline measures at both plants are ongoing, 1987. Not only is it one of the nation’s
from the original intake structure. In along with other improvements oldest waterworks icons, it also has an
1995, Omohundro Water Treatment completed recently, such as new architectural prestige not seen in current
Plant increased rated capacity from 50 chemical feed systems, new electrical water treatment plant designs.
MGD to 90 MGD with the addition of switchgear with emergency generators,
new flash mixers, new flocculators, the
addition of tube settlers, complete filter
rehabilitation including computerized
controls, computerized control systems
View online at tnpublicworks.com 13
