Madison, AL

Owner: Madison Utilities

Size: 8.75 MGD Average Flow; 40 MGD Peak Flow

Project Stage: Complete

Award Winner: American Council of Engineering Companies of Alabama, Engineering Excellence Honor Award

Project Services: Civil, Mechanical, Structural and Electrical Engineering; Treatment System Process Design; Architecture; Landscape Architecture; Permitting; Construction Administration

Description: A master plan was developed to address issues at the existing 6 MGD wastewater treatment plant including biological treatment capacity, potential future nutrient limits, disinfection, treatment plant hydraulics, and solids dewatering and disposal. A 20-year present worth cost analysis was performed to evaluate the life-cycle costs of competing for biological treatment processes and solids dewatering processes.  Project improvements include an additional aeration basin and secondary clarifier for increased biological treatment capacity, a new UV disinfection system, new RAS/WAS pumping station and building, new solids dewatering building with a centrifuge, new maintenance building, and improvements to SCADA and standby power generation. The treatment capacity was expanded from 6 MGD to 8.75 MGD (average) with a peak design flow of 40 MGD. Provisions were made for future treatment facilities to achieve nutrient removal using biological treatment or precipitation and filtration.