Problem: Aiken County Public Service Authority in South Carolina provides wastewater treatment services for the City of Aiken and numerous other towns and industries in the area. The plant’s treatment capacity was increased to 26 mgd from 20 mgd in 2019. Biosolids residuals or byproducts are 100% reclaimed and clean water is discharged to the Savannah River. The utility was originally using a dry polymer system with mixing/aging tanks to create the polymer. However, this low-energy mixing system had trouble activating the polymer properly and often wasted polymer (estimates of about 15%) in the mixing tanks themselves.
Solution: The operation team
