biological oxygen demand Videos

  • Ovivo Rotary Distributor - Video

    The Ovivo® Rotary Distributor filters screened and settled wastewater through a bed of rock or plastic to reduce the biological oxygen demand (BOD) to acceptable levels. Microorganisms attach to the media and consume the waste that contacts the surface as the liquid trickles through the media. Learn more at ...

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    STM Aerotor Biological Nutrient Removal System

    The STM-Aerotor™ Biological Nutrient Removal System uses Integrated Fixed Film and Activated Sludge (IFAS) technology as part of a process that provides biological nutrient removal for municipal and industrial wastewater treatment. How it works: With every rotation, the STM-Aerotor captures atmospheric air, draws it down into mixed liquor in a steel or concrete basin, and slowly releases it as ...

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