Secondary Clarifiers RAS Pumps and MCCs Improvements

About this project

The wastewater treatment plant serving southeast Michigan is one of the largest plants in the world. Issues with the secondary clarifiers Return Activated Sludge (RAS) stations and pumps and the related Motor Control Centers (MCCs) were affecting continued, reliable treatment. The refurbishment of the equipment and pump stations needed to be carefully sequenced to avoid taking more than a minimum number of RAS stations (and the related clarifiers) out of service at one time.

Sigma, as the Prime Consultant, provided complete process modeling, study, design, and construction administration services. The installation sequence that Sigma developed for the RAS pumping facilities and MCCs was strictly planned, and then overseen by Sigma, to avoid process interruptions to more than a bare, necessary minimum time.

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