Wastewater Treatment Plants
The Southside Wastewater Treatment Plant is located in
southwest Tulsa. Two offsite lift stations and one onsite lift
station convey influent flow to the treatment plant.
The original treatment facility was
constructed and placed in operation in the 1950's. The plant
consisted of influent pumping, grit removal, primary clarifiers,
chlorine disinfection and anaerobic digestion. Two 10.5 mgd
activated sludge treatment trains were constructed in 1972, and a
third 10.5 mgd train was constructed in 1975. In 1994, a fourth
activated sludge treatment train was constructed along with
replacement of the bar screens at the influent lift station, two
additional gravity thickeners, two additional anaerobic digesters
and dechlorination facilities. In 1996, new chlorination
facilities, and intermediate lift station and bioselectors were
added to the plant. Offsite sludge dewatering facilities were also
constructed in 1996.
The treatment plant is designed for an
average flow of 42 mgd. Wastewater enters the treatment plant
through a 36-inch force main from the Cherry Creek Lift Station, a
24-inch force main from the 71st Street Lift Station, and a 24-inch
gravity line from Mooser Creek. Wastewater also enters the
treatment plant from two 36-inch gravity sewers from the east bank
of the Arkansas River. The plant liquid treatment includes offsite
flow equalization, influent pumping and screening, grit removal,
primary settling, intermediate pumping, an activated sludge process
with bioselectors, final clarification and disinfection. The solids
treatment process includes gravity thickening, sludge stabilization
by anaerobic digestion, sludge dewatering, stabilized sludge
storage and land application.
The Northside Wastewater Treatment
Plant is located in northeast Tulsa and serves the
northeast portion of the service area. Two offsite lift stations
and one onsite lift station convey influent flow to the treatment
plant.
The original treatment facility was
constructed and placed in operation in 1958. In 1974, the plant
consisted of an 8 mgd trickling filter plant. An 11 mgd parallel
activated sludge plant was completed in 1978 to the north of the
trickling filter facilities. In 1984, an 11 mgd mirror expansion
added a second activated sludge train. The expansion also added
excess flow treatment facilities. In 1987, a 21 mgd expansion added
two treatment trains similar to the 1978 and 1984 activated sludge
treatment facilities. In 1988, disinfection facilities were added
to the 21 mgd expansion trains. After the 21 mgd expansion was
completed, the trickling filter plant was taken offline and all the
trickling filters were demolished. The original primary clarifiers
were modified in 1995 to be used as excess flow diversion basins,
and the original final clarifier is used for stormwater
detention.
The treatment plant is designed for an
average flow of 42.6 mgd. However, the plant's original allotted
load allocation was based on only 36.8 mgd. Wastewater enters the
treatment plant through a 36 inch and a 42 inch force main from the
Northside Interceptor Lift Station and a 36 inch and a 42 inch
force main from the Apache Lift Station. Additional influent is
pumped from the Airport Lift Station through a 16 inch force main
that connects to the 20 inch excess flow return force main.
The plant liquid treatment includes
preliminary process screening, excess flow retention, grit removal,
primary settling, and activated sludge process, final clarification
and disinfection. The solids treatment process includes air
floatation thickening, sludge stabilization by anaerobic digestion,
stabilized sludge storage and land application.
The Haikey Creek Wastewater Treatment Plant is located in
southeast Tulsa. Two offsite pump stations transport flow to
the treatment plant. The treatment plant is situated on the
northeast portion of a 326.7 acre site owned by the City of
Tulsa. The treatment facilities are owned by the Regional
Metropolitan Utility Authority (RMUA) and are currently operated
under contract by the TMUA. The plant serves the southeastern Tulsa
tributary to Fry, Vensel and Haikey Creek and the Broken Arrow
tributary to Haikey Creek.
The original 2.0 mgd treatment facility
was constructed in 1976 with a grit tank and excess flow basin
added in 1983. In 1986, the capacity was increased to 8 mgd average
flow by constructing oxidation ditches, final clarifiers, an air
flotation thickener and sludge holding tanks and lagoons. A
chlorination/dechlorination facility was operational in 1994. As
part of the 1996 sludge process improvements, gravity thickeners,
dewatering facilities, lime stabilization facilities and dewatered
sludge storage facilities were constructed.
In 1998, the plant was converted from
the extended aeration process to the conventional activated sludge
process. Additional aerators were added to the oxidation ditches,
new screens were added at the grit removal facility and two
additional chlorine contact basins were constructed. The additional
aerators increased the treatment plant capacity from an average
flow of 8 mgd to 16 mgd.
Wastewater enters the treatment plant
through a 36 inch force main from the Southeast Lift Station and a
30 inch force main and a 24-inch force main from Haikey Creek Lift
Station. The plant liquid treatment includes preliminary
process screening, an oxidation ditch aeration process,
clarification and disinfection. The solids treatment process
includes gravity thickening, sludge storage, sludge dewatering,
stabilized sludge storage and land application.
The Lower Bird Creek Wastewater
Treatment Plant is located in northeast Tulsa on a bluff
overlooking the Port of Catoosa. Two offsite lift stations
transport flow to the treatment plant. The North and South Port
Lift Stations are located in the Port of Catoosa. The treatment
plant and associated lift stations were constructed in 1996.
The treatment plant is designed for an
average flow of 2.0 mgd. Wastewater enters the treatment plant
through a 24-inch force main from the South Port Lift Station.
Liquid treatment facilities include an oxidation ditch aeration
process, final clarification, disinfection and post aeration.
Solids are transferred to the Northside Wastewater Treatment Plant
for processing.
