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The Vertical Loop Reactor(VLR®) process is a design based upon 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® 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.
- 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
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