For 15 years, plans to double the capacity of Michigan’s Zeeland Clean Water Plant remained stalled as the City of Zeeland worked toward a joint wastewater treatment contract with two neighboring Ottawa County communities. As a result, maintaining efficient aeration control posed a challenge for the 1.65 million gallons per day (MGD) facility. A manually operated system combined with inadequate mixing capabilities resulted in over-aeration and wasted energy. When expansion plans moved forward in 2016, the city alleviated those problems with the Xylem Sanitaire CASPERON activated sludge solution process, which eliminated the use of lime to treat waste and significantly reduced the volume of biosolid residuals.
Today, the Zeeland Clean Water Plant has two primary tanks, six aeration tanks featuring CASPERON, the biological nutrient removal system, two final clarifiers, an ultraviolet disinfection system building, a RAS blower building, a laboratory building addition, two aerobic digesters, an odor control system and new integrated OSCAR SCADA controls.