City of Greenville
WWTP Improvements - Contract 2
Montcalm County, Michigan
Williams & Works and Century A&E created a design for significant improvements to the City of Greenville WWTP. The design involved replacing the primary and secondary treatment systems.
The project was the second phase of improvements following a study that began in 2017 to evaluate the treatment plant and propose a cost effective and appropriate upgrade. The headworks and primary treatment design consisted of a building expansion to house a new vortex grit system and belt filter primaries. The belt filters remove solids from the influent waste stream to be pumped to the digesters. The secondary treatment is be an aerobic granular sludge (AGS) system. A circular concrete EQ tank and three rectangular concrete process tanks were constructed for the system. The process creates granules of activated sludge to provide treatment. They run in a batch operation to react, settle, and waste sludge from the tanks similar to an SBR. A building adjacent to the process tanks houses piping, blowers, and electrical equipment for the system. In addition, the plant SCADA system was improved to provide better control and remote access to operators.
The project bid in April 2021. Construction was completed in December 2023.
