Briars Wastewater Treatment Plant – Clinton, MS

Background: The plant was aging and the existing aeration system was old and not well designed. Although the influent load was well below the original design biological loading, the existing aeration system could not keep up. Basin DO levels rarely reached 0.5 mg/l, even when all three available blowers were in operation.

Bioworks’ assistance: Bioworks worked with the city’s engineer, WGK Inc, to determine the optimum approach and found that it was simple – replace the existing aeration system with the modern Bioworks system. No additional air was to be needed. 

The aeration system change-out was done in January, 2018. In addition to the process limitations of the old system, the plant personnel also reported that working on the old aeration system was tedious, and were impressed with OXIRISE. So, that option was included. Results: Once the Bioworks system was installed the basin DO level increased immediately to a level above 5 mg/l, using the same amount of air that had been used in the past (3 blowers). One blower was then shut down, reducing the DO level to 3-4 mg/l. Finally, two of the three blowers were shut down, reducing the basin DO level to the ideal level of 1.5-2 mg/l. Problem solved!