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 SOILTECH ATP SYSTEMS, INC.
(Anaerobic Thermal Processor)

This vendor is participating in the EPA Superfund Innovative 
Technology Evaluation (SITE) Program.  The following technology 
profile has been reproduced from the SITE Technology Profile 
document, 7th edition.  The SITE profile has been supplemented by 
MVA Consulting Inc. using information obtained from the vendor or 
from other SITE publications, referenced at the end of this file. 

                                
TECHNOLOGY DESCRIPTION:

The SoilTech ATP Systems, Inc. (SoilTech), anaerobic thermal
processor (ATP) uses a rotary kiln unit to desorb, collect, and
recondense contaminants from feed material (see figure below).  The
ATP can also be used in conjunc-tion with a dehalogenation process
to chemically destroy halogenated hydrocarbons at elevated tempera-
tures.

The proprietary kiln contains four separate inter-nal thermal
zones:  preheat, retort, combustion, and cooling.  In the preheat
zone, water and volatile organic compounds (VOC) are vaporiz-ed. 
The hot solids and heavy hydrocarbons then pass through a
proprietary sand seal to the retort zone.  The sand seal allows
solids to pass and inhibits gas and contaminant movement from one
zone to the other.  Concurrently, hot treated soil from the combus-
tion zone enters the retort zone through a second sand seal.  This
hot treated soil provides the thermal energy necessary to desorb
the heavy organic contaminants.  The vaporized contaminants are
removed under slight vacuum to the gas handling system.  After
cyclones remove dust from the gases, the gases are cooled, and con-
densed oil and water are separated into their various fractions.

The coked soil passes through a third sand seal from the retort
zone to the combustion zone.  Some of the hot treated soil is
recycled to the retort zone through the second sand seal as
previously described.  The remainder of the soil enters the cooling
zone.

As the hot combusted soil enters the cooling zone, it is cooled in
the annular space between the outside of the preheat zone and the
kiln shell.  Here, the heat from the combusted soils is transferred
indirectly to the soils in the preheat zone.  The cooled, treated
soil exiting the cooling zone is quenched with water and conveyed
to a storage pile.

Flue gases from the combustion zone pass through the cooling zone
to an emission control system. The system consists of a cyclone and
baghouse to remove particulates, a wet scrubber to remove acid
gases, and a carbon adsorption bed to remove trace organic
compounds.

When the ATP system dechlorinates contami-nants, an oil mixture
containing alkaline dehalogenation reagents is sprayed on the con-
taminated soil as it enters the preheat zone.  The reagents
dehalogenate or chemically break down chlorinated compounds,
including polychlori-nated biphenyls (PCB), in the ATP system.

WASTE APPLICABILITY:

The ATP system was originally developed to recover oil from tar
sands and shales.  The system is now also used to dechlorinate PCBs
and chlorinated pesticides in soils and sludges; to separate oils
and water from refinery wastes and spills; and, in general, to
remove hazardous VOCs and semivolatile organic compounds (SVOC)
from soils and sludges.  The ATP technology has also been selected
to remediate contaminated soil at two Superfund sites contaminated
with polynuclear aromatic hydrocarbons, pesticides, dioxins, and
furans.

STATUS:

The ATP system has been demonstrated at two sites.  At the first
demonstration, in May 1991, a full-scale unit dechlorinated PCB-
contaminated soil at the Wide Beach Development Superfund site in
Brant, New York.  At the second demon-stration, completed in June
1992, a full-scale unit remediated soils and sediments at the
Waukegan Harbor Superfund site in Waukegan, Illinois.  The
technology has since treated PCB, polychlorinated aromatic
hydrocarbons, and pesticide-contaminated soils at two additional
Superfund sites.  Two additional Superfund sites have since been
remediated by the ATP system in Ohio and Kentucky.

Test results from both SITE demonstrations indicate the following:

>  The SoilTech ATP system removed over 99 percent of the PCBs
   in the contaminated soil, resulting in PCB levels below 0.1
   parts per million (ppm) at the Wide Beach Development site
   and averaging 2 ppm at the Waukegan Harbor Superfund site.
   
>  Dioxin and furan stack gas emissions were below the site-specific 
   standards.
   
>  PCB stack gas emissions were equivalent to 99.9999 percent
   destruction and removal efficiency at the Waukegan Harbor
   site.
   
>  No volatile or semivolatile organic degradation products
   were detected in the treated soil.  Also, no leachable
   metals, VOCs, or SVOCs were detected in the treated soil.
   
>  For the Wide Beach Development and Waukegan Harbor
   remediation projects, soil treatment costs were
   approximately $265 and $155 per ton, respectively.  The
   regulatory support, mobilization, startup, and demobil-
   ization costs totalled about $1,400,000 for each site.


FOR FURTHER INFORMATION

EPA PROJECT MANAGER:
Paul dePercin
U.S. EPA
Risk Reduction Engineering Laboratory
26 West Martin Luther King Drive
Cincinnati, OH  45268
513-569-7797
Fax: 513-569-7620

TECHNOLOGY DEVELOPER CONTACTS:
Alistair Montgomery
Canonie Environmental Services Corp.
94 Inverness Terrace East, Suite 100
Englewood, CO  80112
303-790-1747
Fax: 303-799-0186

Joseph Hutton
SoilTech ATP Systems, Inc.
800 Canonie Drive
Porter, IN  46304
219-929-4343
Fax: 219-929-1776
__________________________________________________________

Sources of information in this profile:

EPA Superfund Innovative Technology Evaluation Program 
        Technology Profiles Seventh Edition, November 1994. 
        EPA/540/R-94/526.

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