Type down a report (Water Treatment)

About the Lucas County Maumee River Waste Water Treatment Plant:

In June 1970, a contract was signed by the City of Maumee, Lucas County, and the Ohio

Water Development Authority to finance, construct, and operate a regional wastewater

treatment facility to service Maumee, Waterville, Holland, and other limited portions of

unincorporated Lucas County. Construction was started on the new wastewater treatment

plant in March 1971. The Maumee River Wastewater Treatment Plant (MRWWTP) was placed

into service in early 1973 as a five MGD activated sludge treatment plant with a hydraulic

capacity of 12.5 MGD. The Lucas County Waste Water Treatment Plant is located in

Waterville, OH and operates 24 hours per day. This facility also generates electricity through

co-generation.

In 2003-2004, the Maumee River WWTP was expanded again to increase the design / peak

capacity by 7.5/17.3 MGD (Plant total is now 22.0/47.3 MGD). These improvements were

constructed as a totally separate liquid treatment train called the West Plant. The former

Plant B is now called the East Plant. The West Plant treatment includes influent screening

and grit removal for preliminary treatment, a primary clarifier, chemical addition for

phosphorus removal, two two-pass aeration basins for activated sludge treatment, two final

clarifiers, and an ultraviolet disinfection system. The new West Plant was constructed with

the future capability to be expanded to a design / peak capacity of 15.0/34.5 MGD.

In addition to the construction of the new West Plant, the County also made several

improvements to the East Plant, the Anaerobic Digesters, Sludge Storage Facilities, and the

Administration Building. The improvements to the East Plant included replacing the old

centrifugal blowers with new, energy-efficient single-vane centrifugal blowers; replacing the

coarse bubble diffusers in the aeration tanks with fine bubble diffusers; replacing the old

chlorination / de-chlorination system with and Ultraviolet Disinfection system; and, installing

bio-scrubbers for odor control at the aerated grit chamber and raw sewage pumping station.

The other changes to the MRWWTP included increasing the Anaerobic Digester gas line

sizes, adding an additional dewatered sludge storage pad, and adding new offices,

conference rooms, and storage space in the Administration Building

In 2010, the MRWWTP included improvements with the selection, purchase, and installation

of a new centrifuge for dewatering digested sludge. Lucas County received financing and

grants for the installation of the new dewatering centrifuge, and completed the project in

2010. The installation of the new centrifuge was adjacent to the belt filter press, where it

was used with a truck loading conveyor. The belt filter press is being retained as backup

dewatering equipment in the event the centrifuge is out of operation for service or repair.

The long range plan for the facility is to purchase a second centrifuge and construct a new

dewatering building adjacent to the sludge storage pads. The wastewater flows for the

Lucas County Sewer Service Area are projected to be met by the facility’s most recent 7.5

MGD plant expansion through the year in 2020.