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 wanted to test the emulsion polymer system before fully committing to a new system to be sure that the new system would generate the efficiency and performance they expected. They demoed a Polyblend Emulsion Activation Demo Unit from Cleanwater1 for one of the belt filter press lines.
Result: Overall polymer usage went down almost immediately after the system was activated. They went from two totes per week to one. Switching to the system also decreased costs by nearly 50%. 855-669-3845; www.cleanwater1.com
