The Waterloo Emitter is a simple, low cost device designed for the controlled and uniform release of oxygen, or other bioenhancing amendments, to encourage and sustain the growth of microorganisms required for in-situ bioremediation of contaminated groundwater.
The patented technology* enables steady, direct diffusion of oxygen into an aquifer through pressurized silicone or LDPE tubing. Continuous, consistent release of oxygen into the tubing creates the ideal concentration gradient driving this passive system, without ‘bubbling off’ excess oxygen.
Emitters are ideal for the bioremediation of BTEX and MTBE using oxygen. The diffusive process provides immediate bioavailability of molecular oxygen for aerobic biodegradation enhancement, therefore no loss of the amendment gas occurs. The Waterloo Emitter can also encourage desirable abiotic reactions (pH adjustment, hydrolysis, etc.).
With the addition of oxygen into the subsurface, microbial biodegradation of pollutants - the natural breakdown of chemical contaminants by microorganisms - is enhanced. Techniques that supplement natural attenuation processes are more commonly being used due to their ability to accelerate cleanup efforts. Using oxygen, the Waterloo Emitter has the potential to make cleanups faster, more effective, and less expensive.
* U.S. Patent # 5,605,634