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The Kankakee River Metropolitan Agency is
located on 89 acres of land adjacent to the Kankakee
River. In 1996, the Kankakee River Metropolitan Agency (KRMA)
was formed. KRMA owns and manages the facility through a
Board of Directors. The original facility was
constructed in 1930 and upgraded and expanded in the
1960’s, 1970’s and 1980’s as well as the most recent in
2006.
Plant Design/Utilization Data:
Design Flow Capacity 25 MGD
Current Average Flow 12.5 MGD
Design BOD 40,000 lbs/day
Current loading 20,000 lbs/day
Service Area:
KRMA has an approved facility planning
area (FPA) which represents approximately two-thirds of
the County of Kankakee. This FPA includes the City of
Kankakee and Villages of Aroma Park, Bourbonnais and
Bradley. Major interceptors owned by the municipalities
serve the existing population and radiate to the north,
east, and south of the metropolitan area.
NPDES Effluent Limitations:
BOD (Biochemical Oxygen Demand 20 mg/l
SS (Suspended Solids) 25 mg/l
Customers Served:
It is estimated that there are 57,500
persons served within the City and the three Villages,
30 significant industrial dischargers and approximately
700 commercial users.
Currently KRMA is utilizing two forms of
alternative energy production. The first form of
alternative energy production is the Kankakee City
Hydroelectric Plant. This plant contains three
induction 400 kWh generators. Due to the stipulations
from IDOC (Illinois Department of Conservation) and FERC
(Federal Energy Regulatory Commission) the operator
needs to maintain 500 CFS (Cubic Foot / Second) over the
dam at all times. Anything above and beyond the 500 CFS
can be utilized through the turbines for energy
production. The available river flow, therefore,
determines the amount of power the hydroelectric plant
can produce for use by KRMA. During the summer months
low flow conditions often restrict the
operation/production of the Hydro Electric Plant.
During the winter ice can be a factor that may restrict
the inlets and reduce the potential production. Flood
conditions also reduce production by reducing the
available head difference between the upstream and
downstream elevations. In most cases there is not
enough flow for all three hydroelectric units to produce
power at the same time. Normally, two units are
available and average production can range from 280 kWh
to 620 kWh.
The second form of alternative energy
production available is the methane fueled
engine/generators located at KRMA. There are two
syncronous 240 kWh Waukasha
engine/generators. One by product of anaerobic
digestion of sewage sludge is methane gas. Water is
separated from the gas and the methane is supplied from
the digesters to the engine/generators. At this time,
there is insufficient gas production for two
engine/generators to operate continuously. The operation
of one engine/generator can produce from 160 kWh to 200
kWh under normal operating conditions. The
engine/generators can also produce power from natural
gas.
The switchgear at the KRMA is supplied by
two Commonwealth Edison feeders. These two feeders are
supplied from the substation located on Armour Road just
to the west of the Canadian National Railroad tracks in
Bourbonnais. The feeders from Commonwealth Edison, the
Hydroelectric Plant and the engine/generators are
connected directly into the KRMA switchgear located west
of the main entrance.
Click on the picture below
to access a Hydro Brochure
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