TerraTherm, som har stået for det overordnede design af opvarmningsløsningen på Knullen, har fået Environmental Business Journal’s guld medalje for stor vækst og for at have økonomisk succes. Den kombinerede løsning der er udviklet til Knullen projektet er nævnt som en af årsagerne til firmaets økonomiske succes. TerraTherm og deres partnere i Danmark (NIRAS) har endvidere fået Environmental Business Journal’s oprensningspris for Knullen projektet, som er den første termiske oprensning i verden, hvor ISTD er kombineret med damp.
Prisen blev overrakt i San Diego den 18-20 februar 2009.Environmental Business Journal har fremsendt nedenstående begrundelse for prisuddelingen:
TerraTherm, Inc., a remediation contractor focused on in situ thermal remediation (ISTR) technologies, for increasing revenue by 38% and more than doubling net income during 2008. Based on current backlog and not including any new wins that the firm may receive, TerraTherm expects revenue to increase by more than 100% to over $12 million and net income to triple in 2009.
The company attributes this growth in part to the growing popularity of its thermal conduction heating (TCH), advanced electrical resistance heating (ERH), and steam-enhanced extraction (SEE) technologies, which can be applied alone or in combination to solve complex source remediation problems and meet the requirements of a wide range of sites and contaminants.
TerraTherm, Inc. and its partners in Denmark for the start-up and completion in 2008 of what the company describes as the world's first in situ thermal remediation (ISTR) project combining thermal conduction heating (TCH) and steam-enhanced extraction (SEE). The project— a cleanup at a dry-cleaning facility in Denmark— was extremely complex, both because of the underlying geology and hydrology and because of the fact that it was undertaken in very tight quarters beneath the facility, which had to remain in operation for the duration. Pollution at the facility resulted in a significant dense non-aqueous phase liquid (DNAPL) source area along with a 3,000-foot-long down-gradient plume impacting two municipal wells serving 100,000 citizens in the city of Odense.
The remedial goal was to remove the source area, defined as having soil concentrations of tetrachloroethene, or perchloroethane (PCE), above 10 milligrams per kilogram (mg/kg), and reduce them to concentrations of 1 mg/kg or below. PCE DNAPLs had migrated through 35 feet of clay till into a high-yielding sandy groundwater aquifer, to a treatment depth of 46 feet. Combining ISTR technologies was necessary to achieve complete source-zone cleanup of both the clay using TCH and the sandy aquifer using SEE. More than 9,000 pounds of contamination were removed in only 4.5 months of treatment, representing a removal efficiency of 99.75 %.
Siden er sidst opdateret 29-07-2020.
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