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EPA 540-R-94/501
Colloid Polishing Filter Method - Filter Flow Technology, Inc.
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Colloid Polishing Filter Method - Filter Flow Technology,
Inc. (2.6M)
ABSTRACT
Colloid Polishing Filter Method - Filter Flow Technology, Inc.
Innovative Technology Evaluation Report
EPA 540-R-94/501
May 1995
Filter Flow Technology Inc.'s CPFM uses an Filter Flow (FF) 1000 to remove radionuclide
and heavy metal pollutants from water by a combination of sorption, chemical
complexing, and filtration. The FF 1000 is contained within filter packs which
are dewatered with compressed air after use. The end products are water with
reduced contaminant concentrations and spent FF 1000. The CPFM technology was
demonstrated at the U.S. Department of Energy's Rocky Flats Plant in Denver,
Colorado, in September 1993. The CPFM treated a total of 10,000 gallons of water
containing approximately 100mg/L of uranium and 100 pCi/L per liter of gross
alpha-contaminated water. Three tests, consisting of a total of five runs, were
conducted. For the first test, consisting of three runs conducted at the same
operating conditions, the CPFM system removed 58 to 91 % of uranium and 33 to
87% of gross alpha contamination from groundwater that had no pretreatment.
For the second test, using groundwater pretreated with sodium sulfide, the removal
efficiency was improved to 95% for uranium and 94% gross alpha contamination.
The third test was inconclusive.
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Posted February 26, 1999
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