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The City of Marysville
Wastewater System serves the residents and businesses in the
City as well as Milford Center, the Honda of America auto plants, and
Southeastern Union County along Industrial Parkway.
The Water Reclamation Facility treats an average daily flow of
approximately 4.0 million gallons per day (mgd). The
Water Reclamation Facility (WRF) is located outside of the City on
Beecher-Gamble Road. The WRF is
staffed seven days a week, 24 hours per day. The
Superintendent, Rick Varner, can be reached at (937)
642-1036 weekdays from 8:00am to 4:30pm.
History
The original sewers in
Marysville were installed in 1913. At that time the system
was comprised of about 13 miles of six or eight inch clay
gravity lines and a small pond. In 1932 the first
anaerobic digester was built as well as Imhoff tanks and the
treatment pond was enlarged. In the fifties, two aeration
tanks with agitating aerators were added as well as final
clarifiers and sludge drying beds.
1964 brought the first
large expansion with the addition of another larger primary
anaerobic digester, conversion of the Imhoff tanks to primary
clarifiers, grit removal system, one additional aeration tank, a
blower building and blowers to provide aeration, an additional
final clarifier, and disinfection facilities.
In 1982 construction began
on the existing treatment plant. The facility is a
two-stage activated sludge plant with tertiary filters.
The facility included pretreatment, primary clarifiers,
additional aeration tanks, intermediate clarifiers, second stage
aeration tanks and blower building, final clarifiers, effluent
pumping, tertiary sand filters, chlorine and chemical feed
systems, an equalization basin, administration building with a
laboratory, a secondary anaerobic digester, and new sludge
drying beds. This expansion brought the total design
capacity to 2.3 mgd.
In 1989 work began on a
1.7 mgd Orbal oxidation ditch and an additional final clarifier.
This expansion was added as a second flow train and runs
parallel with the old plant. A small pump station was also
built to split the flow before pretreatment with approximately
58% of the flow directed to the existing 2-stage facility and
42% to the Orbal facility. This brought the total design
capacity to 4.0 mgd.
Two belt filter presses
were installed in 1995 to dewater digested solids. The
first anaerobic digester built in the 1930's was converted to a
lime holding tank to store used lime from the City Water
Treatment Plant to be dewatered along with wastewater biosolids.
In 2000, a new headworks
building with influent pumps, grit removal, fine screens, and
flow diversion structure was constructed. This facility
replaced the pretreatment building constructed in the early
1980's.
In 2003, the anaerobic
digester was converted to an aerobic digester. The
digester was modified and placed in operation in 2005.
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Collection System
The current sewer system
is made up of approximately 126 miles of sewer lines. This
includes both gravity and force mains. The sewers range
from 6 to 60 inches in diameter. The system also includes
18 lift stations and 2,218 manholes.
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New
Facilities
The City of Marysville,
Ohio owns and operates their wastewater collection and treatment
system. The wastewater system serves the City's population
of approximately 19,000 people, several major industries within
the City's corporation limits, including Scotts Miracle-Gro
Company, Nestle Corporation, Goodyear Tire and Rubber Co.,
Parker Hannifin Hydraulics, Univenture, and the Ohio Reformatory
for Women (ORW), as well as several other outlying businesses
and communities, including Honda of America Manufacturing, the
Village of Milford Center, and flows from surrounding areas of
Union County.
In 2004, the City
completed its Wastewater Master Study. The Master Study
recommended that a new Water Reclamation Facility be constructed
to replace the existing facility, which was nearing the end of
its useful life, and was in dire need of upgrade/expansion.
The new facility was strategically located on Beecher-Gamble
Road so that it could serve existing customers as well as
potential future high growth areas. It was designed to
meet more stringent current and future regulations and to be
readily expandable in 2-mgd modules in order to meet future
needs cost-effectively and expeditiously.
The wastewater conveyance
system was designed to eliminate numerous lift stations
throughout the existing collection system and minimize the
number of future pump stations in order to increase reliability
and reduce maintenance costs.
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Facilities Summary
Trunk Interceptor
Sewer
Crosses Run Pump
Station/Force Mains
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Conveys flow to Water
Reclamation Facility
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21.5 mgd capacity
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Expandable to 40 mgd
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Odor Control
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Standby Power
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24-inch and 30-inch
force mains
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Each force main 12,500
feet long
Marysville Water
Reclamation Facility
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8.0/21.5 mgd ave/peak
day capacity
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Expandable to 24/60
mgd ave/peak day capacity
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Provides Advanced
Secondary Treatment
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Wet Stream Processes
□Screening
□Aeration
□Clarification
□Filtration
□Disinfection
□Post-aeration
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Standby Power
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Administration and
Laboratory Building
Plant Effluent
Line
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Personnel
The current Division of
Wastewater is comprised of the following:
●Superintendent
- Ohio EPA Class IV Operator's Certificate
●Chief
Operator - Ohio EPA Class III Operator's Certificate
●Five
Operators - OEPA Certified Operator's (Class III, II, and I)
●Lab
Technician - Ohio EPA Class III Operator's Certificate,
Class I Lab Analyst Certificate
●Two
Maintenance Mechanics
●Collection
System Crew Chief - Ohio EPA Class II Wastewater Collection
●Five
Collection System Maintenance Crew Workers - OEPA Collection
Systems Certified (Class II-I)
●Administrative
Assistant
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