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Rotating Biological Contactor (RBC) Process

As an efficient fixed film wastewater treatment technology, Rotating Biological Contactors are well suited for secondary and/or advanced treatment in municipal or industrial applications. The long-term reliability of this process is evident in the more than 6,000 units operating today.

RBC Process

The RBC process consists of a large disc with radial and concentric passages slowly rotating in a concrete tank.  During the rotation, about 40 percent of the media surface area is in the wastewater.  The rotation and subsequent exposure to oxygen allows organisms to multiply and form a thin layer of biomass.  This large, active population causes the biological degradation of organic pollutants.  Excess biomass shears off at a steady rate and is then carried through the RBC system for removal in a clarifier.

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Features and Benefits

  • Consistent process results
  • Stable operation without frequent supervision
  • Lower expansion and retrofit costs due to modular construction and reduced excavation
  • Short wastewater retention time allows for a smaller footprint
  • Minimal head loss through system
  • Low energy consumption (3 kW per 3,000 people)
  • The only maintenance required is simple drive and bearing lubrication
  • Reduced life cycle costs as compared to suspended growth systems
  • Simple operation: no recycle, less lab testing for process control
  • Operator friendly
  • Easily modified for upgrades, retrofits and multiple applications

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Contact Us

Bob Dunn
RBC - Sales
262.521.8206
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 Product Documentation

Brochure:
Rotating Biological Contactor (RBC)

Parts & Services

For Parts and Service call 800.931.1755
or e-mail: Envirexinfo.water@siemens.com

 RBC Retrofit Service Program 
Envirex Products is the OEM source for all Envirex®, Lyco®, and Autotrol® RBC sales and service. We also offer total parts, service, and retrofits for all brands of Rotating Biological Contactors (RBC).

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