Soil Facilities

Indirect Thermal Desorption System The Indirect Thermal Desorption System (IDS) is a transportable, indirect-fired rotary desorber, with collection of off-gas organics by condensation. Water from the system is processed through a mobile water treatment system. In the water treatment system, contaminants are removed, concentrated and collected. Treated water is used to cool and remoisturize the treated soil, thereby providing a closed loop for the process water. Parameters System footprint: 70' by 80' Soil retention time: 10 minutes Operating temperatures: 400-900°F Throughput ranges: 10-20 tons per hour at 15% moisture content Rapid mobilization period due to small footprint and structural mobility Solid record of successful contaminant removal from soil, gases, and water Condense and collect technology; non-destructive Limited waste products; closed-loop system Commercially available, proven technology. System Design and Operation Summary The Indirect Thermal Desorption System is comprised of multiple components to treat contaminated soil, debris, and the associated vapor and liquid steam resulting from the treatment process. The system consists of i) an indirectly heated desorber to remove contaminants from soil, ii) gas treatment components, including a condenser to remove contaminants from the carrier gas, and iii) water treatment components to remove and concentrate contaminants from the water stream. The IDS operates at desorption temperatures up to 1400°F, to treat soils contaminated with a range of compounds including naphthalene, BTEX, PAHs and PCBs. The IDS is a modular, completely transportable system. Individual components are linked together on three separate trailers and controlled by System Operator(s)/Technicians. Also, a separate water treatment trailer will be a part of the treatment system. The IDS has a footprint of approximately 70 feet by 80 feet for efficient utilization of space. The IDS is comprised of multiple components to treat contaminated soils (feed materials) and the resulting vapor stream. The system consists of: materials feed system indirectly heated desorber to volatilize contaminants from feed materials baghouse materials discharge system vapor treatment system to filter contaminants from the vapor stream; liquid treatment system to collect, and treat contaminants from the liquid stream. Soil from the feed area is loaded into a Screen/Feed Hopper via a front-end loader. Soil then travels along a feed conveyor to a feed pugmill, from which it is fed to the indirectly heated Thermal Desorber. In the Thermal Desorber, the contaminants are desorbed as the indirect heat increases the temperature of the soil. Contaminants are filtered and condensed from the carrier gas and are treated and removed from the liquid stream. The vapor phase gas stream enters a quench where it is cooled with water; contaminants are further removed in condensers. The gas stream exiting the condensers then enters the Air Pollution Control system, where the vapor stream is treated to further remove contaminants. Vapors are also carried through coalescing filters to remove suspended oil mist, and high efficiency particulate (HEPA) filters for particulate removal. The induced draft (ID) fan maintains a negative draft through the process gas stream. A liquid treatment system treats condensate from the quench and condensers. Once treated, soils are stockpiled and tested to demonstrate compliance with applicable soil cleanup standards. Permitting In September of 1998, EPA granted Maxymillian Technologies, Inc. a national permit under authority of the Toxic Substances Control Act (TSCA) to operate the IDS. The permit was the first of it's kind in permitting the use of a non-incineration treatment technology to remove PCBs from contaminated soils. back to Experience

The Indirect Thermal Treatment System and accompanying Water Treatment System.