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Title: Testing of a benchscale Reverse Osmosis/Coupled Transport system for treating contaminated groundwater

The Reverse Osmosis/Coupled Transport process is a innovative means of removing radionuclides from contaminated groundwater at the Hanford Site. Specifically, groundwater in the 200 West Area of the Hanford Site has been contaminated with uranium, technetium, and nitrate. Investigations are proceeding to determine the most cost effective method to remove these contaminants. The process described in this paper combines three different membrane technologies (reverse osmosis, coupled transport, and nanofiltration to purify the groundwater while extracting and concentrating uranium, technetium, and nitrate into separate solutions. This separation allows for the future use of the radionuclides, if needed, and reduces the amount of waste that will need to be disposed of. This process has the potential to concentrate the contaminants into solutions with volumes in a ratio of 1/10,000 of the feed volume. This compares to traditional volume reductions of 10 to 100 for ion exchange and stand-alone reverse osmosis. The successful demonstration of this technology could result in significant savings in the overall cost of decontaminating the groundwater.
Authors:
; ;
Publication Date:
OSTI Identifier:
39792
Report Number(s):
WHC-SA-2755; CONF-950646-2
ON: DE95005984
DOE Contract Number:
AC06-87RL10930
Resource Type:
Conference
Resource Relation:
Conference: Air and Waste Management Association meeting, San Antonio, TX (United States), 18-23 Jun 1995; Other Information: PBD: Jan 1994
Research Org:
Westinghouse Hanford Co., Richland, WA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; DECONTAMINATION; URANIUM; OSMOSIS; TECHNETIUM; NITRATES; HANFORD RESERVATION; MEMBRANES; MEMBRANE TRANSPORT; TESTING