The Kuwahee wastewater treatment plant (WWTP) comprehensive facility plan update included major recommendations to integrate sustainable components, with the goal of lowering energy consumption and life-cycle costs to offset rising energy costs and improve treatment operations. One
of the primary recommendations was to replace the large multistage centrifugal blowers that supply air for several treatment processes because the blowers accounted for more than 40 percent of the total electrical demand at the facility, had poor efficiency and limited flexibility over the
required operating range, and required significant maintenance due to their increasing age. An alternatives analysis was conducted for blower equipment replacement. Recommendations provided in the plan were to install turbo, air-bearing blowers which are anticipated to result in significant
process energy costs when combined with other nitrification process upgrades.
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