|
EPA 540/MR-93/512
Mobile Volume Reduction Unit at the Sand Creek Superfund Site
This document is available in the Adobe Acrobat PDF
Format.
Click here
for information about Portable Document File (PDF) Formats.
or
Click here
to directly download the Acrobat Reader.
(To view the PDF, it is recommended that you
use the latest version of Acrobat Reader.)
Mobile Volume Reduction Unit at the Sand Creek Superfund
Site (17K)
ABSTRACT
Mobile Volume Reduction Unit at the Sand Creek Superfund Site
Risk Reduction Engineering Laboratory and Treatability Study Bulletin
EPA 540/MR-93/512
August 1993
RREL developed a pilot-scale VRU to determine the feasibility of soil washing
for the remediation of contaminated soils. This mobile unit can process 100
lb/hr of soil feed. EPA requested the VRU to evaluate soil washing as a treatment
for contaminated soil at the Sand Creek Superfund Site in Commerce City, CO.
This site contains approximately 14,000 yd3 of soil contaminated with pesticides.
The VRU treated Sand Creek soil during 23 2-hr tests over a 2-wk period in late
September 1992. Laboratory analyses measured particle size distribution and
moisture content as well as the presence of heptachlor, dieldrin, and other
pesticides. The soil washing with 1% surfactant achieved >90% removal for the
target contaminants. Soil washing did not reduce the coarse soil (>200 mesh)
contaminant concentrations to levels that met the cleanup goals at the Sand
Creek Site. Required removal efficiencies (> 99%) were beyond the capabilities
of the VRU. Addition of a surfactant improved the cleanup levels for heptachlor
and dieldrin. Double washing provided only a modest increase in contaminant
removal efficiency. Rinsing the coarse soils resulted in a significant reduction
of heptachlor and dieldrin.
Back to SITE Home Page
Posted February 26, 1999
|
