U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Dense Nonaqueous Phase Liquids (DNAPLs)

Treatment Technologies

Thermal Processes: Ex Situ

Halogenated Monoaromatics

Chlorobenzene, 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, and 1,2,4-Trichlorobenzene (1,2,4-TCB) are considered amenable to ex situ thermal desorption (Feeney et al. 1998).

Example Sites

Eastland Woolen Mill, Corinna, Maine
U.S. EPA, Superfund Site Progress Profile.

The former Eastland Woolen Mill and local areas are contaminated by the release of hazardous substances from the mill, which began operation around 1909. Chlorobenzenes, a major component of the dye process, are present in both dissolved and DNAPL form. Treatment technologies chosen included ex situ thermal desorption of contaminated soil, pump and treat, and ISCO (sodium persulfate).


Overview of Thermal Desorption Technology
R.J. Feeney, P.J. Nicotri, and D.S. Janke.
NFESC-CR-98-008-ENV, NTIS: ADA352083, 32 pp, 1998