Soil Vapor Extraction (SVE)
The Eurisana system employs the same technology as SVE but also incorporates the technology of Air Sparging. The Eurisana System applies both a vacuum to the extraction wells as well as applying pressure to a second set of wells to improve the flow through the soil or water, note the vacuum wells are not immersed into the ground water only the soil immediately above. The extracted vapor is passed through a proprietary filtration system and then used to re-pressure the input wells
Conventional
SVE also known as “soil venting” or “vacuum extraction” reduces concentrations of volatile constituents in petroleum products adsorbed to soils. In this technology, a vacuum is applied through wells near the source of contamination in the soil. Volatile constituents of the contaminant mass “evaporate” and the vapors are drawn toward the extraction wells. Extracted vapor is then treated as necessary (commonly with carbon adsorption) before being released to the atmosphere.
Air Sparging
Eurisana
As noted in the prior technology the Eurisana system employs the same technology as SVE but also incorporates the technology of Air Sparging. The Eurisana System applies both a vacuum to the extraction wells as well as applying pressure to a second set of wells to improve the flow through the soil or water, note the vacuum wells are not immersed into the ground water only the soil immediately above. The extracted vapor is passed through a proprietary filtration system and then used to re-pressure the input wells.
Conventional
Air Sparging technology reduces concentrations of volatile constituents in petroleum products that are adsorbed to soils and dissolved in groundwater. This technology, which is also known as “air stripping” or “volatilization,” involves the injection of contaminant-free air into the subsurface saturated zone, enabling a phase transfer of hydrocarbons from a dissolved state to a vapor phase. The air is then vented through the unsaturated zone into the openAtmosphere.
Biosparging
Eurisana
The Eurisana System utilizes “Engineered” bacteria that has been developed for the type of contaminant that is being addressed. Additionally, the Eurisana monitors and adjusts the oxygen / air, nutrients, moisture and temperature to insure that the bacteria has an optimum environment to perform the remediation process.
Conventional
Biosparging uses indigenous microorganisms to biodegrade organic constituents in the saturated zone. In Biosparging, air (or oxygen) and nutrients (if needed) are injected into the saturated zone to increase the biological activity of the indigenous microorganisms.
Electrical Resistance Heating (ERH)
Eurisana System
The Eurisana System has the ability to heat the air that is being injected into the soil through the input wells. Although the air temperature is not raised to 100 degrees Celsius it is sufficient to create volatilization of the contamination while supporting maximum growth of the injected bacteria. Unlike ERH process, the volatile contaminant in the soil is not vented into the atmosphere but captured through the vacume wells and traped in a propritary filtering system.
Conventional
ERH also known as “Six Phase Heating”, remedial technology. Employs passing an electrical current through the soil or groundwater by use of electrodes placed into the ground. The natural resistance of soil causes heating of the subsurface soil to approximately 100 degrees Celsius and in turn “Evaporates” or “Boils Off” the volatile constituents of the contaminanted soil “into the Atmosphere.
Chemical Oxidation (ISCO)
Eurisana System
The Eurisana System is capable of utilizing chemical oxidation technology that similar to ISCO reduces concentrations of volatile constituents adsorbed to soils utilizing the injection of a chemical oxidant into the subsurface through the input wells to remove or transform contaminants into less harmful chemical species.
Conventional
ISCO also known as “chemical oxidation “, is remedial technology that reduces concentrations of volatile constituents adsorbed to soils in the saturated zone. ISCO involves the introduction of a chemical oxidant into the subsurface for the purpose of transforming ground water or soil contaminants into less harmful chemical species.
Groundwater Bioremediation
Eurisana System
The Eurisana System in conjunction with a Bioreactor utilizing “Engineered Bacteria” results in the biodegradation of organic materials in the contaminate soil and groundwater.
Conventional
Groundwater Bioremediation is a technology that encourages growth and reproduction of indigenous microorganisms to enhance biodegradation of organic constituents in the contaminate soil groundwater.
Multi-Phase Extraction (MPE)
Eurisana System
The Eurisana System in conjunction with a Bioreactor provides the same results but in a more efficient manner because of the use of “Engineered Bacteria” specifically designed for the contamination. But unlike the MPE method the contaminants are not extracted separated and sent off for disposal but processed (Neutralized) on site. The processed ground water is reintroduced to the aquifer further reducing the concentration levels of the contaminant.
Conventional
Extraction (MPE) also known as Dual Vapor Extraction (DVE), is a technology that uses pumps to remove various combinations of contaminated groundwater, separate-phase petroleum product, and hydrocarbon vapor from the subsurface. Extracted liquids and vapor are treated and collected for disposal, or re-injected to the subsurface. Multi-Phase Extraction also allows for dewatering the saturated zone, exposing the previously saturated zone to airflow from Soil Vapor Extraction (SVE).
Bioventing
Eurisana
The Eurisana System’s main advantage is that it posses all the necessary attributes to maximize the use of “Bacteria” in the remediation process, with an emphasis on the use of “Engineered Bacteria” and a closed loop pressure/vacuum system to maximize the afore mentioned processes.
Conventional
Bioventing remediation technology uses indigenous microorganisms (bacteria) to biodegrade organic constituents adsorbed to soils in the unsaturated zone. In Bioventing, the activity of the indigenous bacteria is enhanced by inducing air (or oxygen) flow into the unsaturated zone (using extraction or injection wells) and, if necessary, by adding nutrients.