Vertical Loop Reactor (VLR®) for Biological Treatment 

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Vertical Loop Reactor (VLR®) Systems for Biological Treatment

VLR® Systems utilize a vertical loop based design with looped reactors in series that allows DO stratification. As such, it is suited for simultaneous nitrification/denitrification; biological phosphorus removal and storm water treatment.

VLR
VLR® system tanks are similar to oxidation ditches that have been flipped on their sides.  There is an upper and lower compartment, separated by a horizontal baffle running the length of the tank.  The process has been adapted from our proven Orbal® technology and uses the same surface mounted discs to provide mixing and to deliver oxygen.  Typically, two or more basins make up the VLR® system, with the first tank operating as an aerated anoxic reactor.
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Features and Benefits

  • Common wall construction – lower construction costs
  • Small footprint – less land area required
  • Dual aerator design – operating flexibility
  • Lengthy aeration retention time  – low power costs
  • Coarse bubble diffusers – easy to meet peak oxygen demands
  • DO stratification – process adaptability
  • Handles excessive storm water treatment – peak flows five times the design flow

 
Peru, Indiana - Sludge and Biosolids Video

Siemens Video

 

 

 

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Casey Whittier
Product Manager - BNR Processes
262.521.8506
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Product Documentation

Brochure
Vertical Loop Reactor For Biological Treatment  (pdf)
Siemens Superior Aeration Technologies (pdf)

Video
Click here to watch a video about the VLR system

Parts and Service

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

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Featured Case Studies

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Articles

Upgrade Project Improves Energy Efficiency at WWTP - WaterWorld, Jan. 2010
"Hybrid Aeration Process Provides Power Savings" - Waterworld, Oct. 2001
"Brand New Technologies Attract International Visitors" - Water & Waste Digest, Aug. 2007  
Achieving Net Zero Energy - WaterWorld, Jan. 2011

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