The Waterloo Emitterâ„¢ is a simple, low cost device designed for the controlled release of oxygen or other amendments, to encourage and sustain the growth of microorganisms required for in-situ bioremediation of contaminated groundwater.
The patented technology enables direct diffusion into an aquifer of fluids (gas or liquid) through silicone or LDPE tubing which is wrapped around a frame. The frame allows insertion of sampling or monitoring devices for down-hole monitoring of groundwater conditions and remediation performance.
Ideal for the bioremediation of BTEX and MTBE using oxygen and diffusion. The diffusive process provides immediate bioavailability of molecular oxygen for aerobic biodegradation enhancement, with no loss of amendment gas due to ‘bubbling’. The Waterloo Emitter can also enhance desirable abiotic reactions (pH adjustment, hydrolysis, etc.).
Applications:
* Oxygen release for aerobic bioremediation of BTEX and MTBE
* Hydrogen release for anaerobic reductive dechlorination of solvents
* Introduction of dissolved SF6, argon, etc for use as tracers
* Release of CO2 for pH adjustment
* Light alkane release to promote co-metabolic biodegradation of MTBE
* Horizontal wells
Advantages/Benefits:
* Low cost
* Controlled, uniform release for constant microbial activity – No amendment loss due to ‘bubbling’
* Easy installation and removal
* No clean up required on decommissioning
* Very low operating and maintenance costs
* No electricity required
* No slurry to mix, handle or inject
* No hazardous materials to ship or handle
* Suitable for many forms of remediation

