STM-Aerotor™ BNR Package Plants

Uses Activated Sludge and Fixed Film technology as part of a process that provides biological nutrient removal for municipal wastewater treatment.

The STM-Aerotor is an integrated fixed film and activated sludge (IFAS) product. The STM captures atmospheric air with each rotation, draws it down into the mixed liquor, and slowly releases the compressed air as coarse bubble aeration. In addition to effective aeration, the Aerotor also provides a large surface area for fixed film growth, providing for a more diverse population of biology and improving the sludge settling characteristics of the solids.

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