Aeration System Upgrades

The City of St. Clair

Cochran designed improvements to the aeration system of the City’s 1.1 MGD plant.  The improvements were implemented to provide more efficient and effective treatment. Improvements included operating the aeration system with variable frequency drives to allow the operator increased control of dissolved oxygen levels.  The newly installed variable frequency drives and dissolved oxygen probes allow the aeration system to operate at the proper speed to maintain optimum dissolved oxygen levels.  The aeration system improvements were completed in 2017.  Cochran provided all aspects of the following services: funding agency loan assistance, energy analysis, design, permitting, construction inspection and construction administration.