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project’s effluent is demonstrated by the system’s wastewater reuse project,
which delivers treated wastewater to irrigate golf courses and to maintain canal and lake
levels in the Las Colinas area of Irving, Texas. This reuse not only reduces operating
costs of the system but is also an excellent example of water conservation. |
| Another innovative aspect of
TRA’s CRWS system involves the land application of 100 percent of the biosolids
produced during the treatment process to agricultural lands outside of the D/FW
metropolitan area. A contractor hauls the approximate 100 tons of biosolids produced daily
from the plant site and applies them at specified rates to permitted agricultural
lands. Farmers pay a nominal fee for this service and are currently lined up to receive
these soil enhancing biosolids which function as a low cost, high grade fertilizer. |
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The Trinity River Authority built 4.7 miles of wastewater pipeline for the Walker-Calloway Branches
project to transport
wastewater from North Richland Hills and Hurst to a receiving point in the Fort Worth
wastewater system pipelines for further transportation and treatment by Fort Worth at its
Village Creek plant. TRA also operates the wastewater pipeline and collects
payments from the two cities for payment to Fort Worth for service. |
The Authority’s
Ten
Mile Creek Regional Wastewater System provides wastewater collection and treatment
services for portions of Cedar Hill, Duncanville, DeSoto and Lancaster in
Dallas County,
and all of Ferris in Ellis County. Wastewater from these member cities is transported to
the treatment plant through 33 miles of pipeline. Originally designed to treat wastewater
flows of 6.78 million gallons per day, the treatment plant has been expanded three times
and is now capable of treating 20 mgd for a population of 200,000. An engineering
evaluation has demonstrated that the plant can successfully treat up to 24 mgd. |
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The
Red Oak Creek Regional Wastewater
System serves all of Ovilla, Glenn Heights and Red Oak, and portions of DeSoto, Cedar Hill
and Lancaster. Capable of serving a population of 35,000, the system consists of a 3.5 mgd
treatment plant and 28 miles of pipeline. TRA’s Red Oak plant features a
pastoral landscape design. The plant is sheltered from the road by trees and gently
rolling berms. Low intensity lighting, noise control features and an architecturally designed
administration building which resembles a country home helps preserve the plant
site’s rural character. Since beginning operations in February 1991, the plant
has provided a positive environmental impact on the Red Oak Creek ecosystem. |
The
Mountain Creek Regional Wastewater System will begin
providing services to Cities of Grand Prairie, Midlothian
and Venus in mid-2004. Additional contracting parties
located in southern Dallas, Tarrant, and northern Ellis
Counties may be added to the system in the future.
The
system includes a new 3.0 MGD wastewater treatment plant,
multiple new lift stations and force mains as well as
Midlothian’s existing 0.9 MGD wastewater plant located
immediately adjacent to the new plant. Components of the
new 3.0 MGD plant consist of aeration basins, aerobic
digesters, final clarifiers and ultraviolet light
disinfection. |
The innovative
Denton Creek Regional Wastewater System first treated
wastewater flows in May 1990. As originally conceived in 1987, the system was to provide
service for the cities of Fort Worth, Haslet and Roanoke.
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Since that time, the
system has increased its service area to include portions of the cities of Southlake and
Keller, and the Towns of Marshall Creek, Circle T, MUD Numbers 1, 2 and 3,
Northlake, Flower Mound and Westlake. The
Denton Creek Regional Wastewater Plant, located in Roanoke, is capable of treating an
average flow of 2.5 mgd. The system contains 25 miles of interceptor pipelines varying
from 15-inches to 36-inches. |
Innovative technologies have been
incorporated into the design of the Denton Creek plant, including one of the first
effective ultraviolet light disinfection systems in the state. Other innovative design
systems include the Alkapro monitoring system, which reduces power consumption, and a
three million gallon detention basin.
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This basin can function as a holding basin during race events at the adjacent NASCAR
racetrack or it can be used as a batch reactor, treating wastewater as a conventional
activated sludge process. |
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TRA’s
DCRWS was a
prerequisite for the construction of Fort Worth’s Alliance Airport in southern Denton
County. The Alliance project has proven to be a formidable engine for economic
development.
Water Treatment -
TRA
operates five regional water treatment systems.
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Raw water for
the Authority’s
Tarrant County Water Supply Project
comes from the Tarrant Regional Water District East
Texas Water System. Raw water is impounded in the
Cedar Creek and Richland-Chambers Lakes in East Texas
and moved to the greater
Tarrant County area by a
District pipeline network. There is a tap in the line
that allows water to flow into Village Creek, which is
the principal tributary of Lake Arlington.
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TRA pumps raw water
from Lake Arlington, treats it and delivers it to five cities in northeast Tarrant County
that are served by this water treatment system. Originally established in 1974 to provide
6 mgd of treated water for the cities of Bedford and Euless, this project has been
expanded four times. In 1980, the plant’s service area was expanded to include the
City of Colleyville and parts of Grapevine and North Richland Hills. As of 2001, the
Authority’s Tarrant County regional system will be capable of providing more than 72
mgd of water. The expansions of the plant’s capacity is in response to population
growth within the customer cities. The system will ultimately deliver in excess of 100 mgd
to the cities of the system. |
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