CITY OF STURGIS
130 N. Nottawa
Sturgis MI 49091
269.651.2321
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You are here: Departments
> Public Services/Utilities
WASTEWATER TREATMENT
Wastewater Treatment information:
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Services/Utilities |
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The City of Sturgis Wastewater Treatment Plant serves 3,500
sewer customers residing in the city of Sturgis, the Village
of Burr Oak and the portions of the townships adjoining the
City. These 3,500 customers produce 1,400,000 gallons of wastewaters
per day with a strength equivalent to a population of approximately
16,000 people. Fifty three of these customers are classified
as industrial users contributing about 20% of the total flow.
This department enforces the sewer use ordinance with a system
for permitting, sampling and inspecting the industrial users
subject to regulation.
Our goals are:
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To provide a high quality effluent
as efficiently as possible. |
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To anticipate changing environmental
regulatory trends and be prepared to meet those challenges. |
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To maintain good relations with industrial
customers while enforcing controls to protect worker health
& safety, the treatment plant and the environment. |
STAFFING
The plant is staffed with one manager and four operators. One
of the operators is also a part time industrial inspector utilized
in maintaining the industrial pretreatment program.
HISTORY
The original Sturgis Wastewater treatment Plant (WWTP) was constructed
in 1915 and consisted of two Imhoff Tanks. One primary settling
tank, a sludge digester, sludge drying beds and a service building
were constructed in 1929. In 1962 the WWTP was improved to meet
secondary treatment standards. A trickling filter and a final
clarifier was added along with two sludge digesters, additional
sludge drying beds and chlorinating facilities. Upgrades were
made in 1972 to improve phosphorus removal efficiencies. Improvements
consisted of an upflow clarifier, lime and chemical feed equipment,
lime sludge drying beds, and a service building.In 1986-87 the
WWTP was upgraded to a trickling filter/solids contact plant
as an innovative technology. In 1996 upgrade consisted of a
Nitrification tower, liquid sludge storage and handling facilities,
three new clarifiers, a service building, final effluent cascade
aeration, effluent flow measurement and computerized operations
monitoring was added.
HOW WE DO IT
The plant is designed to treat an average of 2.8 MGD (million
gallons per day) and a maximum of 3.6 MGD. We treat the wastewater
with a combination of physical, chemical and biological methods
to reduce the pollutants to a level acceptable for discharge
to the fawn river. The equipment required to do this consists
of 46 pumps that move liquids or sludges, 18 machines that move
air or gas, 16 tanks used for settling, mixing or storage, 11
process flow measuring devices, numerous systems for controlling
the processes and a laboratory for assessing plant performance
and providing data for reporting requirements.
| Description of Plant
Processes |
| Comminutor |
Reduces particle sizes
to protect downstream equipment.
1 HP Capacity 7.9 MGD |
| Grit Removal |
Small settling basin removes
sand and gravel which can cause problems in pumps and
other mechanical devices.
12 ft circular tank capacity 3.8 MGD.
An inclined grit washer transports grit to waste containers. |
| Influent Flow Meter |
12" Parshall flume w/ ultrasonic
transducer level sensor |
| Primary Clarification |
Large settling basins which
remove settleable solids and floatable materials.
One(1) circular 35' diameter with 8' SWD, one 45' square
with 8'SWD, one 55'diameter with 10'SWD |
| Trickling Filter Pump
Station |
Three variable speed non-clog
centrifugal pumps lift the water to the trickling filters,
each rated 2500 GPM @ 31.0' TDH. Firm pumping capacity
with largest pump out of service is 3700 GPM. |
| Trickling Filters |
Large beds of rock, 6.5
feet deep, through which sewage trickles. Microorganisms
growing on the rocks remove waste materials by consuming
wastes.
Two, 104' diameter, four arm reaction driven distributors,
with aluminum domes. Forced ventilation with two fans
per filter. |
| Solids contact / Flocculation
Basin |
Aerated basin in which
microorganisms sloughed off from trickling filters are
mixed with concentrated sludge settled and returned from
the intermediate clarifiers.
89,000 gallons, three positive displacement blowers 10HP,
140 cfm @9psi, each. |
| Intermediate lift station |
One screw, 48" diameter
0-44.4 MGD @ 16.5TDH to lift water up to intermediate
clarifier #1. Water flows to intermediate #2 by gravity. |
| Intermediate Clarifiers |
Settling basins which allow
sloughed off microorganisms to settle out and be returned
to the solids contact basin.
One 60' diameter with 14'SWD., one 24' by 120' with 12'
SWD. |
| Flow measurement, pumping,
Nitrification Tower |
12" Parshall flume with
ultrasonic transmitter to measure flow to tower.
Three variable speed non-clog centrifugal pumps rated
at 2500 GPM @ 63'TDH lift the water to the top of the
tower where it trickles down thru plastic cross flow media.
Microorganisms growing on the media remove ammonia.
Nitrification tower is 55' diameter, 30 ' deep with mechanical
variable speed distributor. 72,800 cu ft of media. |
| Final Clarifiers |
Settling basins which allow
sloughed off microorganisms to settle out.
Two 24' by 120' with 12' SWD. |
| Chemical Treatment |
Phosphorus is removed with
the aide of Ferrous Chloride and polymer addition with
settling of this sludge occuring in the intermediate clarifiers
along with microorganism sloughings.
Chlorine is added after final clarifiers to kill harmful
bacteria. |
| Polishing Pond |
A lined pond allows time
for the chlorine to disinfect and then dissipate before
addition of Sodium Metabisulfite to remove excess chlorine
before discharge. |
| Final Flow Measurement
/ Cascade Aerator |
24 " Parshall flume with
ultrasonic transmitter for flow measurement ahead of Static
cascade steps to introduce additional oxygen into water
before release to the Fawn River. |
| Residuals Management |
Excess biosolids (Sludge)
is held in anaerobic digesters to decompose. The decomposition
yields a slurry which is somewhat like a peat slurry.
Also methane gas is generated and used to heat the digester.
The digested sludge is stored in liquid form awaiting
recyling to agricultural land.
Two anaerobic digesters 350,000 gallons each. One 140'
diameter with 14' SWD storage tank-1,600,000 gallons. |
Application for Wastewater Discharge Permit
For questions regarding the Wastewater Discharge Permit, please
call Thomas Sikorski at 269.651.6520.
• Application for Wastewater Discharge
Permit
• Application for Wastewater Discharge
Permit 
The form can be faxed, emailed or mailed to: fax: 269.659.2500
City of Sturgis Wastewater Treatment Plant
2101 Treatment Plant Rd.
Sturgis, MI. 49091-8720
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Jeannette Fenner - Director of Wastewater / IT
Phone: 269.659.7239
Tom Sikorski - WWTP Supervisor
Phone: 269.659.7250
General Information
Phone: 269.651.6520
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