What concentrations of dissolved oxygen can I expect to see at a site after ORC application?
Unlike air sparging (which uses atmospheric air), ORC provides pure oxygen. Thus, the concentration of oxygen from ORC can build up in groundwater to very high concentrations (up to about 45ppm) before leaving solution in the form of a bubble. This gives ORC technology a tremendous advantage over air sparging in that the high concentrations of oxygen dramatically increase the rate of oxygen diffusion through the subsurface. Thus, ORC has the potential to impact a much greater area around an application point by simple diffusion than can be expected by applying atmospheric air.
