Design Flow

Average: 0.5 MGD

Peak: 1.2 MGD

Current Average: 0.271 MGD

Effluent Limits

BOD: 5 mg/L

TSS: 20 mg/L

NH₃: 0.5 mg/L

Lakeside Equipment

Two (2) 30-inch, 3-hp Screw Pumps

One (1) 16-inch Micro Strainer

Four (4) 19-foot Magna Rotors, Covers and Baffles

Two (2) 4-foot Hinged Plate Weirs

Two (2) 30-foot Spiraflo Clarifiers

One (1) 48-foot Tertiary Spiraflo

Equipment Maintenance

Running 24 hours per day with one hour of routine maintenance

Pinconning, Michigan, is a small town with only 1,000 for population, but anticipates a growth to over 3,000 in the next 20 years.  Its wastewater treatment resources were not capable of accommodating such a rapid increase, so the city looked to redesign the plant with the proper equipment to handle the influx in wastewater.

Lakeside provided two (2) 30-inch diameter Screw Pumps to bring water to a 16-inch Micro Strainer for superior screening.  Wastewater then goes through two (2) 86-foot E.A. Aerotor Plants, which each incorporate a commonwall design of two (2) 40-foot Spiraflo Clarifiers and four (4) 19-foot Magna Rotors, Covers and Baffles.  Secondary clarification is achieved with the use of a 48-foot Tertiary Spiraflo.

While the budget and bidding process was of major concern, it wasn't the only one: Michigan is known to experience extremely low temperatures in the winter months.  The E.A. Aerotor Plants are handling wastewater influent with great results. (See graph below)

Also, two years ago, the plant started to accept septage. Pinconning averages 6,000 gallons/day "without affecting our plant performance," Plant Operator Tim Stalker said.  "The E.A. Aerotor ditches work really well in treating the septage."  Operators thought the plant might produce more sludge, but it is "producing no more sludge than before it treated septage."

Stalker was also impressed with Lakeside's service.  "Lakeside's representatives were very helpful and knowledgeable about their products.  Plant start-up would be a lot easier and less stressful if all representatives were like Lakeside's."

The plant serves not only the city, but a township surrounding the area is in the process of adding sewer lines, bringing sewage into the plant and doubling the flow.  Only 2% of the flow is industrial with municipal making up the other 98%.  Collected screened solids are depositing at landfills, all biosolids are land applied as fertilizer and effluent is discharged to Lakes Huron by way of the Pinconning River and Saginaw Bay.

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Past Installations of the Month